---
_id: '59276'
abstract:
- lang: eng
text: Stress plays a crucial role in thin films and layered systems, and thus significantly
influences the material's electrical, mechanical and (nonlinear) optical responses.
Despite lithium niobate's wide applicability as a nonlinear optical material,
the impact of mechanical stress on its nonlinear optical properties is not well
characterized. In this work, we systematically study both experimentally and theoretically,
the nonlinear optical responses of thin film lithium niobate (TFLN) single crystals.
Compressive and tensile stress is applied in our experiment using a piezodriven
strain cell. We then record the second-harmonic-generated (SHG) response in back-reflection
geometry, and compare these results to theoretical modeling using density functional
theory (DFT). Both methods consistently reveal that uniaxial stress induces changes
of the nonlinear optical susceptibility of certain tensor elements on the order
of up to 1 pm/(V GPa). The exact value depends on the tensor element that is addressed
in our SHG analysis, on the crystal orientation, and also whether using compressive
or tensile stresses. Furthermore, a lowering of the crystal symmetry when applying
stress along the x
or y
crystallographic axes is observed by the appearance of new nonlinear optical tensor
elements within the strained crystals.
article_number: '064109'
author:
- first_name: Mike N.
full_name: Pionteck, Mike N.
last_name: Pionteck
- first_name: Matthias
full_name: Roeper, Matthias
last_name: Roeper
- first_name: Boris
full_name: Koppitz, Boris
last_name: Koppitz
- first_name: Samuel D.
full_name: Seddon, Samuel D.
last_name: Seddon
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Simone
full_name: Sanna, Simone
last_name: Sanna
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
citation:
ama: Pionteck MN, Roeper M, Koppitz B, et al. Second-order nonlinear piezo-optic
properties of single crystal lithium niobate thin films. Physical Review B.
2025;111(6). doi:10.1103/physrevb.111.064109
apa: Pionteck, M. N., Roeper, M., Koppitz, B., Seddon, S. D., Rüsing, M., Padberg,
L., Eigner, C., Silberhorn, C., Sanna, S., & Eng, L. M. (2025). Second-order
nonlinear piezo-optic properties of single crystal lithium niobate thin films.
Physical Review B, 111(6), Article 064109. https://doi.org/10.1103/physrevb.111.064109
bibtex: '@article{Pionteck_Roeper_Koppitz_Seddon_Rüsing_Padberg_Eigner_Silberhorn_Sanna_Eng_2025,
title={Second-order nonlinear piezo-optic properties of single crystal lithium
niobate thin films}, volume={111}, DOI={10.1103/physrevb.111.064109},
number={6064109}, journal={Physical Review B}, publisher={American Physical Society
(APS)}, author={Pionteck, Mike N. and Roeper, Matthias and Koppitz, Boris and
Seddon, Samuel D. and Rüsing, Michael and Padberg, Laura and Eigner, Christof
and Silberhorn, Christine and Sanna, Simone and Eng, Lukas M.}, year={2025} }'
chicago: Pionteck, Mike N., Matthias Roeper, Boris Koppitz, Samuel D. Seddon, Michael
Rüsing, Laura Padberg, Christof Eigner, Christine Silberhorn, Simone Sanna, and
Lukas M. Eng. “Second-Order Nonlinear Piezo-Optic Properties of Single Crystal
Lithium Niobate Thin Films.” Physical Review B 111, no. 6 (2025). https://doi.org/10.1103/physrevb.111.064109.
ieee: 'M. N. Pionteck et al., “Second-order nonlinear piezo-optic properties
of single crystal lithium niobate thin films,” Physical Review B, vol.
111, no. 6, Art. no. 064109, 2025, doi: 10.1103/physrevb.111.064109.'
mla: Pionteck, Mike N., et al. “Second-Order Nonlinear Piezo-Optic Properties of
Single Crystal Lithium Niobate Thin Films.” Physical Review B, vol. 111,
no. 6, 064109, American Physical Society (APS), 2025, doi:10.1103/physrevb.111.064109.
short: M.N. Pionteck, M. Roeper, B. Koppitz, S.D. Seddon, M. Rüsing, L. Padberg,
C. Eigner, C. Silberhorn, S. Sanna, L.M. Eng, Physical Review B 111 (2025).
date_created: 2025-04-02T16:21:47Z
date_updated: 2025-04-02T16:24:47Z
department:
- _id: '15'
- _id: '623'
- _id: '288'
doi: 10.1103/physrevb.111.064109
intvolume: ' 111'
issue: '6'
language:
- iso: eng
publication: Physical Review B
publication_identifier:
issn:
- 2469-9950
- 2469-9969
publication_status: published
publisher: American Physical Society (APS)
quality_controlled: '1'
status: public
title: Second-order nonlinear piezo-optic properties of single crystal lithium niobate
thin films
type: journal_article
user_id: '22501'
volume: 111
year: '2025'
...
---
_id: '63091'
abstract:
- lang: eng
text: We present the design and characterization of a guided-wave, bright, and highly
frequency non-degenerate parametric down-conversion (PDC) source in thin-film
lithium niobate. The source generates photon pairs with wavelengths of 815 nm
and 1550 nm, linking the visible wavelength regime with telecommunication wavelengths.
We confirm the high quality of the generated single photons by determining a value
for the heralded second-order correlation function as low as g_h^(2)=(6.7+/-1.1)*10^8-3).
Furthermore, we achieve a high spectral brightness of 0.44·10pairs/(smWGHz) which
is two orders of magnitude higher than sources based on weakly guiding waveguides.
The shape of the PDC spectrum and the strong agreement between the effective and
nominal bandwidth highlight our high fabrication quality of periodically poled
waveguides. The good agreement between the measured and simulated spectral characteristics
of our source demonstrates our excellent understanding of the PDC process. Our
result is a valuable step towards practical and scalable quantum communication
networks as well as photonic quantum computing.
article_number: '52729'
article_type: original
author:
- first_name: Silia
full_name: Babel, Silia
id: '63231'
last_name: Babel
orcid: https://orcid.org/0000-0002-1568-2580
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Franz
full_name: Roeder, Franz
id: '88149'
last_name: Roeder
- first_name: Werner
full_name: Ridder, Werner
id: '63574'
last_name: Ridder
- first_name: Christian
full_name: Golla, Christian
id: '40420'
last_name: Golla
- first_name: Ronja
full_name: Köthemann, Ronja
last_name: Köthemann
- first_name: Bernhard
full_name: Reineke, Bernhard
id: '29821'
last_name: Reineke
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Babel S, Bollmers L, Roeder F, et al. Ultrabright, two-color photon pair source
based on thin-film lithium niobate for bridging visible and telecom wavelengths.
Optics Express. 2025;33(25). doi:10.1364/oe.571605
apa: Babel, S., Bollmers, L., Roeder, F., Ridder, W., Golla, C., Köthemann, R.,
Reineke, B., Herrmann, H., Brecht, B., Eigner, C., Padberg, L., & Silberhorn,
C. (2025). Ultrabright, two-color photon pair source based on thin-film lithium
niobate for bridging visible and telecom wavelengths. Optics Express, 33(25),
Article 52729. https://doi.org/10.1364/oe.571605
bibtex: '@article{Babel_Bollmers_Roeder_Ridder_Golla_Köthemann_Reineke_Herrmann_Brecht_Eigner_et
al._2025, title={Ultrabright, two-color photon pair source based on thin-film
lithium niobate for bridging visible and telecom wavelengths}, volume={33}, DOI={10.1364/oe.571605}, number={2552729},
journal={Optics Express}, publisher={Optica Publishing Group}, author={Babel,
Silia and Bollmers, Laura and Roeder, Franz and Ridder, Werner and Golla, Christian
and Köthemann, Ronja and Reineke, Bernhard and Herrmann, Harald and Brecht, Benjamin
and Eigner, Christof and et al.}, year={2025} }'
chicago: Babel, Silia, Laura Bollmers, Franz Roeder, Werner Ridder, Christian Golla,
Ronja Köthemann, Bernhard Reineke, et al. “Ultrabright, Two-Color Photon Pair
Source Based on Thin-Film Lithium Niobate for Bridging Visible and Telecom Wavelengths.”
Optics Express 33, no. 25 (2025). https://doi.org/10.1364/oe.571605.
ieee: 'S. Babel et al., “Ultrabright, two-color photon pair source based
on thin-film lithium niobate for bridging visible and telecom wavelengths,” Optics
Express, vol. 33, no. 25, Art. no. 52729, 2025, doi: 10.1364/oe.571605.'
mla: Babel, Silia, et al. “Ultrabright, Two-Color Photon Pair Source Based on Thin-Film
Lithium Niobate for Bridging Visible and Telecom Wavelengths.” Optics Express,
vol. 33, no. 25, 52729, Optica Publishing Group, 2025, doi:10.1364/oe.571605.
short: S. Babel, L. Bollmers, F. Roeder, W. Ridder, C. Golla, R. Köthemann, B. Reineke,
H. Herrmann, B. Brecht, C. Eigner, L. Padberg, C. Silberhorn, Optics Express 33
(2025).
date_created: 2025-12-15T07:20:36Z
date_updated: 2026-01-07T11:28:35Z
department:
- _id: '288'
- _id: '623'
doi: 10.1364/oe.571605
intvolume: ' 33'
issue: '25'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://opg.optica.org/oe/fulltext.cfm?uri=oe-33-25-52729
oa: '1'
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Ultrabright, two-color photon pair source based on thin-film lithium niobate
for bridging visible and telecom wavelengths
type: journal_article
user_id: '63231'
volume: 33
year: '2025'
...
---
_id: '62713'
abstract:
- lang: eng
text: Periodically poled thin-film lithium niobate (TFLN) crystals are the fundamental
building block for highly-efficient quantum light sources and frequency converters.
The efficiency of these devices is strongly dependent on the interaction length
between the light and the nonlinear material, scaling quadratically with this
parameter. Nevertheless, the fabrication of long, continuously poled areas in
TFLN remains challenging, the length of continuously poled areas rarely exceeds
10 mm. In this work, we demonstrate a significant progress in this field achieving
the periodic poling of continuous poled areas of 70 mm length with a 3 μm poling
period and a close to 50 % duty cycle. We compare two poling electrode design
approaches to fabricate long, continuous poled areas. The first approach involves
the poling of a single, continuous 70 mm long electrode. The second utilize a
segmented approach including the poling of more than 20 individual sections forming
together a 70 mm long poling area with no stitching errors. While the continuous
electrode allows for faster fabrication, the segmented approach allows to individually
optimize the poling resulting in less duty cycle variation. A detailed analysis
of the periodic poling results reveals that the results of both are consistent
with previously reported poling outcomes for shorter devices. Thus, we demonstrate
wafer-scale periodic poling exceeding chiplet-size without any loss in the periodic
poling quality. Our work presents a key step towards highly-efficient, narrow-bandwidth
and low-pump power nonlinear optical devices.
article_type: original
author:
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Noah
full_name: Spiegelberg, Noah
last_name: Spiegelberg
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Bollmers L, Spiegelberg N, Rüsing M, Eigner C, Padberg L, Silberhorn C. Segmented
finger electrodes to optimize ultra-long continuous wafer-scale periodic poling
in thin-film lithium niobate. Nanophotonics. 2025;14:4761. doi:10.1515/nanoph-2025-0461
apa: Bollmers, L., Spiegelberg, N., Rüsing, M., Eigner, C., Padberg, L., & Silberhorn,
C. (2025). Segmented finger electrodes to optimize ultra-long continuous wafer-scale
periodic poling in thin-film lithium niobate. Nanophotonics, 14,
4761. https://doi.org/10.1515/nanoph-2025-0461
bibtex: '@article{Bollmers_Spiegelberg_Rüsing_Eigner_Padberg_Silberhorn_2025, title={Segmented
finger electrodes to optimize ultra-long continuous wafer-scale periodic poling
in thin-film lithium niobate}, volume={14}, DOI={10.1515/nanoph-2025-0461},
journal={Nanophotonics}, publisher={Walter de Gruyter GmbH}, author={Bollmers,
Laura and Spiegelberg, Noah and Rüsing, Michael and Eigner, Christof and Padberg,
Laura and Silberhorn, Christine}, year={2025}, pages={4761} }'
chicago: 'Bollmers, Laura, Noah Spiegelberg, Michael Rüsing, Christof Eigner, Laura
Padberg, and Christine Silberhorn. “Segmented Finger Electrodes to Optimize Ultra-Long
Continuous Wafer-Scale Periodic Poling in Thin-Film Lithium Niobate.” Nanophotonics
14 (2025): 4761. https://doi.org/10.1515/nanoph-2025-0461.'
ieee: 'L. Bollmers, N. Spiegelberg, M. Rüsing, C. Eigner, L. Padberg, and C. Silberhorn,
“Segmented finger electrodes to optimize ultra-long continuous wafer-scale periodic
poling in thin-film lithium niobate,” Nanophotonics, vol. 14, p. 4761,
2025, doi: 10.1515/nanoph-2025-0461.'
mla: Bollmers, Laura, et al. “Segmented Finger Electrodes to Optimize Ultra-Long
Continuous Wafer-Scale Periodic Poling in Thin-Film Lithium Niobate.” Nanophotonics,
vol. 14, Walter de Gruyter GmbH, 2025, p. 4761, doi:10.1515/nanoph-2025-0461.
short: L. Bollmers, N. Spiegelberg, M. Rüsing, C. Eigner, L. Padberg, C. Silberhorn,
Nanophotonics 14 (2025) 4761.
date_created: 2025-12-01T08:45:07Z
date_updated: 2026-01-07T12:06:29Z
department:
- _id: '15'
- _id: '288'
- _id: '623'
doi: 10.1515/nanoph-2025-0461
intvolume: ' 14'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1515/nanoph-2025-0461
oa: '1'
page: '4761'
publication: Nanophotonics
publication_identifier:
issn:
- 2192-8606
- 2192-8614
publication_status: published
publisher: Walter de Gruyter GmbH
quality_controlled: '1'
status: public
title: Segmented finger electrodes to optimize ultra-long continuous wafer-scale periodic
poling in thin-film lithium niobate
type: journal_article
user_id: '22501'
volume: 14
year: '2025'
...
---
_id: '60566'
article_number: '074402'
author:
- first_name: Adriana
full_name: Bocchini, Adriana
id: '58349'
last_name: Bocchini
orcid: 0000-0002-2134-3075
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Sebastian
full_name: Lengeling, Sebastian
id: '44373'
last_name: Lengeling
- first_name: Philipp
full_name: Mues, Philipp
id: '49772'
last_name: Mues
orcid: 0000-0003-0643-7636
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
citation:
ama: 'Bocchini A, Rüsing M, Bollmers L, et al. Mg dopants in lithium niobate: Defect
models and impact on domain inversion. Physical Review Materials. 2025;9(7).
doi:10.1103/5wz1-bjyr'
apa: 'Bocchini, A., Rüsing, M., Bollmers, L., Lengeling, S., Mues, P., Padberg,
L., Gerstmann, U., Silberhorn, C., Eigner, C., & Schmidt, W. G. (2025). Mg
dopants in lithium niobate: Defect models and impact on domain inversion. Physical
Review Materials, 9(7), Article 074402. https://doi.org/10.1103/5wz1-bjyr'
bibtex: '@article{Bocchini_Rüsing_Bollmers_Lengeling_Mues_Padberg_Gerstmann_Silberhorn_Eigner_Schmidt_2025,
title={Mg dopants in lithium niobate: Defect models and impact on domain inversion},
volume={9}, DOI={10.1103/5wz1-bjyr},
number={7074402}, journal={Physical Review Materials}, publisher={American Physical
Society (APS)}, author={Bocchini, Adriana and Rüsing, Michael and Bollmers, Laura
and Lengeling, Sebastian and Mues, Philipp and Padberg, Laura and Gerstmann, Uwe
and Silberhorn, Christine and Eigner, Christof and Schmidt, Wolf Gero}, year={2025}
}'
chicago: 'Bocchini, Adriana, Michael Rüsing, Laura Bollmers, Sebastian Lengeling,
Philipp Mues, Laura Padberg, Uwe Gerstmann, Christine Silberhorn, Christof Eigner,
and Wolf Gero Schmidt. “Mg Dopants in Lithium Niobate: Defect Models and Impact
on Domain Inversion.” Physical Review Materials 9, no. 7 (2025). https://doi.org/10.1103/5wz1-bjyr.'
ieee: 'A. Bocchini et al., “Mg dopants in lithium niobate: Defect models
and impact on domain inversion,” Physical Review Materials, vol. 9, no.
7, Art. no. 074402, 2025, doi: 10.1103/5wz1-bjyr.'
mla: 'Bocchini, Adriana, et al. “Mg Dopants in Lithium Niobate: Defect Models and
Impact on Domain Inversion.” Physical Review Materials, vol. 9, no. 7,
074402, American Physical Society (APS), 2025, doi:10.1103/5wz1-bjyr.'
short: A. Bocchini, M. Rüsing, L. Bollmers, S. Lengeling, P. Mues, L. Padberg, U.
Gerstmann, C. Silberhorn, C. Eigner, W.G. Schmidt, Physical Review Materials 9
(2025).
date_created: 2025-07-09T09:13:24Z
date_updated: 2026-03-17T17:50:06Z
ddc:
- '530'
department:
- _id: '15'
- _id: '623'
- _id: '295'
- _id: '790'
- _id: '288'
- _id: '230'
- _id: '429'
- _id: '35'
- _id: '170'
- _id: '169'
- _id: '27'
doi: 10.1103/5wz1-bjyr
file:
- access_level: open_access
content_type: application/pdf
creator: adrianab
date_created: 2025-07-09T09:18:45Z
date_updated: 2025-07-10T06:43:34Z
file_id: '60567'
file_name: Mg_dopants_LN_PRM.pdf
file_size: 4175120
relation: main_file
file_date_updated: 2025-07-10T06:43:34Z
has_accepted_license: '1'
intvolume: ' 9'
issue: '7'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://link.aps.org/doi/10.1103/5wz1-bjyr
oa: '1'
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '53'
name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden
Konzepten zu funktionellen Strukturen'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '168'
name: 'TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften
von Lithiumniobat (B07*)'
- _id: '166'
name: 'TRR 142 - A11: TRR 142 - Subproject A11'
publication: Physical Review Materials
publication_identifier:
issn:
- 2475-9953
publication_status: published
publisher: American Physical Society (APS)
status: public
title: 'Mg dopants in lithium niobate: Defect models and impact on domain inversion'
type: journal_article
user_id: '22501'
volume: 9
year: '2025'
...
---
_id: '54668'
abstract:
- lang: eng
text: Samples of dielectric optical waveguides of rib or strip type in thin-film
lithium niobate (TFLN) technology are characterized with respect to their optical
loss using the Fabry-Pérot method. Attributing the losses mainly to sidewall roughness,
we employ a simple perturbational procedure, based on rigorously computed mode
profiles of idealized channels, to estimate the attenuation for waveguides with
different cross sections. A single fit parameter suffices for an adequate modelling
of the effect of the waveguide geometry on the loss levels.
author:
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Silia
full_name: Babel, Silia
id: '63231'
last_name: Babel
orcid: https://orcid.org/0000-0002-1568-2580
- first_name: Henna
full_name: Farheen, Henna
id: '53444'
last_name: Farheen
orcid: 0000-0001-7730-3489
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: J. Christoph
full_name: Scheytt, J. Christoph
id: '37144'
last_name: Scheytt
orcid: '0000-0002-5950-6618 '
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Hammer M, Babel S, Farheen H, et al. Estimation of losses caused by sidewall
roughness in thin-film lithium niobate rib and strip waveguides. Optics Express.
2024;32(13):22878. doi:10.1364/oe.521766
apa: Hammer, M., Babel, S., Farheen, H., Padberg, L., Scheytt, J. C., Silberhorn,
C., & Förstner, J. (2024). Estimation of losses caused by sidewall roughness
in thin-film lithium niobate rib and strip waveguides. Optics Express,
32(13), 22878. https://doi.org/10.1364/oe.521766
bibtex: '@article{Hammer_Babel_Farheen_Padberg_Scheytt_Silberhorn_Förstner_2024,
title={Estimation of losses caused by sidewall roughness in thin-film lithium
niobate rib and strip waveguides}, volume={32}, DOI={10.1364/oe.521766},
number={13}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Hammer,
Manfred and Babel, Silia and Farheen, Henna and Padberg, Laura and Scheytt, J.
Christoph and Silberhorn, Christine and Förstner, Jens}, year={2024}, pages={22878}
}'
chicago: 'Hammer, Manfred, Silia Babel, Henna Farheen, Laura Padberg, J. Christoph
Scheytt, Christine Silberhorn, and Jens Förstner. “Estimation of Losses Caused
by Sidewall Roughness in Thin-Film Lithium Niobate Rib and Strip Waveguides.”
Optics Express 32, no. 13 (2024): 22878. https://doi.org/10.1364/oe.521766.'
ieee: 'M. Hammer et al., “Estimation of losses caused by sidewall roughness
in thin-film lithium niobate rib and strip waveguides,” Optics Express,
vol. 32, no. 13, p. 22878, 2024, doi: 10.1364/oe.521766.'
mla: Hammer, Manfred, et al. “Estimation of Losses Caused by Sidewall Roughness
in Thin-Film Lithium Niobate Rib and Strip Waveguides.” Optics Express,
vol. 32, no. 13, Optica Publishing Group, 2024, p. 22878, doi:10.1364/oe.521766.
short: M. Hammer, S. Babel, H. Farheen, L. Padberg, J.C. Scheytt, C. Silberhorn,
J. Förstner, Optics Express 32 (2024) 22878.
date_created: 2024-06-10T11:18:06Z
date_updated: 2024-07-22T07:43:02Z
ddc:
- '530'
department:
- _id: '61'
- _id: '429'
- _id: '623'
- _id: '263'
- _id: '288'
doi: 10.1364/oe.521766
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2024-06-10T11:25:00Z
date_updated: 2024-06-10T11:25:00Z
file_id: '54669'
file_name: 2024-06 Hammer - Optics Express - Estimation of losses caused by sidewall
roughness in thin-film lithium niobate rib and strip waveguides.pdf
file_size: 4004782
relation: main_file
file_date_updated: 2024-06-10T11:25:00Z
has_accepted_license: '1'
intvolume: ' 32'
issue: '13'
keyword:
- tet_topic_waveguide
language:
- iso: eng
oa: '1'
page: '22878'
project:
- _id: '53'
grant_number: '231447078'
name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden
Konzepten zu funktionellen Strukturen'
- _id: '175'
grant_number: '231447078'
name: 'TRR 142 - C11: TRR 142 - Kompakte Photonenpaar-Quelle mit ultraschnellen
Modulatoren auf Basis von CMOS und LNOI (C11*)'
- _id: '167'
grant_number: '231447078'
name: 'TRR 142 - B06: TRR 142 - Ultraschnelle kohärente opto-elektronische Kontrolle
eines photonischen Quantensystems (B06*)'
- _id: '266'
grant_number: PROFILNRW-2020-067
name: 'PhoQC: PhoQC: Photonisches Quantencomputing'
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Estimation of losses caused by sidewall roughness in thin-film lithium niobate
rib and strip waveguides
type: journal_article
user_id: '158'
volume: 32
year: '2024'
...
---
_id: '57028'
abstract:
- lang: eng
text: Lithium niobate and lithium tantalate are among the most widespread
materials for nonlinear, integrated photonics. Mixed crystals with arbitrary Nb–Ta
ratios provide an additional degree of freedom to not only tune materials properties,
such as the birefringence but also leverage the advantages of the singular compounds,
for example, by combining the thermal stability of lithium tantalate with the
larger nonlinear or piezoelectric constants of lithium niobate. Periodic poling
allows to achieve phase-matching independent of waveguide geometry and is, therefore,
one of the commonly used methods in integrated nonlinear optics. For mixed crystals,
periodic poling has been challenging so far due to the lack of homogeneous, mono-domain
crystals, which severely inhibit domain growth and nucleation. In this work, we
investigate surface-near (<1μm depth) domain inversion on x-cut lithium
niobate tantalate mixed crystals via electric field poling and lithographically
structured electrodes. We find that naturally occurring head-to-head or tail-to-tail
domain walls in the as-grown crystal inhibit domain inversion at a larger scale.
However, periodic poling is possible if the gap size between the poling electrodes
is of the same order of magnitude or smaller than the average size of naturally
occurring domains. This work provides the basis for the nonlinear optical application
of lithium niobate tantalate mixed crystals.
author:
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Tobias
full_name: Babai-Hemati, Tobias
last_name: Babai-Hemati
- first_name: Boris
full_name: Koppitz, Boris
last_name: Koppitz
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Bollmers L, Babai-Hemati T, Koppitz B, et al. Surface-near domain engineering
in multi-domain x-cut lithium niobate tantalate mixed crystals. Applied Physics
Letters. 2024;125(15). doi:10.1063/5.0210972
apa: Bollmers, L., Babai-Hemati, T., Koppitz, B., Eigner, C., Padberg, L., Rüsing,
M., Eng, L. M., & Silberhorn, C. (2024). Surface-near domain engineering in
multi-domain x-cut lithium niobate tantalate mixed crystals. Applied Physics
Letters, 125(15). https://doi.org/10.1063/5.0210972
bibtex: '@article{Bollmers_Babai-Hemati_Koppitz_Eigner_Padberg_Rüsing_Eng_Silberhorn_2024,
title={Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate
mixed crystals}, volume={125}, DOI={10.1063/5.0210972},
number={15}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Bollmers,
Laura and Babai-Hemati, Tobias and Koppitz, Boris and Eigner, Christof and Padberg,
Laura and Rüsing, Michael and Eng, Lukas M. and Silberhorn, Christine}, year={2024}
}'
chicago: Bollmers, Laura, Tobias Babai-Hemati, Boris Koppitz, Christof Eigner, Laura
Padberg, Michael Rüsing, Lukas M. Eng, and Christine Silberhorn. “Surface-near
Domain Engineering in Multi-Domain x-Cut Lithium Niobate Tantalate Mixed Crystals.”
Applied Physics Letters 125, no. 15 (2024). https://doi.org/10.1063/5.0210972.
ieee: 'L. Bollmers et al., “Surface-near domain engineering in multi-domain
x-cut lithium niobate tantalate mixed crystals,” Applied Physics Letters,
vol. 125, no. 15, 2024, doi: 10.1063/5.0210972.'
mla: Bollmers, Laura, et al. “Surface-near Domain Engineering in Multi-Domain x-Cut
Lithium Niobate Tantalate Mixed Crystals.” Applied Physics Letters, vol.
125, no. 15, AIP Publishing, 2024, doi:10.1063/5.0210972.
short: L. Bollmers, T. Babai-Hemati, B. Koppitz, C. Eigner, L. Padberg, M. Rüsing,
L.M. Eng, C. Silberhorn, Applied Physics Letters 125 (2024).
date_created: 2024-11-13T08:06:59Z
date_updated: 2024-11-15T09:15:08Z
department:
- _id: '15'
- _id: '623'
- _id: '230'
- _id: '288'
doi: 10.1063/5.0210972
intvolume: ' 125'
issue: '15'
language:
- iso: eng
project:
- _id: '168'
grant_number: '231447078'
name: 'TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften
von Lithiumniobat (B07*)'
publication: Applied Physics Letters
publication_identifier:
issn:
- 0003-6951
- 1077-3118
publication_status: published
publisher: AIP Publishing
status: public
title: Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate
mixed crystals
type: journal_article
user_id: '61375'
volume: 125
year: '2024'
...
---
_id: '59259'
author:
- first_name: Tobias
full_name: Schwabe, Tobias
id: '39217'
last_name: Schwabe
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Niels
full_name: Staal, Niels
last_name: Staal
- first_name: Max
full_name: Schwengelbeck, Max
last_name: Schwengelbeck
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: J. Christoph
full_name: Scheytt, J. Christoph
id: '37144'
last_name: Scheytt
orcid: '0000-0002-5950-6618 '
citation:
ama: Schwabe T, Rüsing M, Staal N, et al. Quantum Photonic Systems in CMOS Compatible
Silicon Nitride Technology . Zenodo; 2024. doi:10.5281/zenodo.15124929
apa: Schwabe, T., Rüsing, M., Staal, N., Schwengelbeck, M., Bollmers, L., Padberg,
L., Eigner, C., Silberhorn, C., & Scheytt, J. C. (2024). Quantum photonic
systems in CMOS compatible silicon nitride technology . Zenodo. https://doi.org/10.5281/zenodo.15124929
bibtex: '@book{Schwabe_Rüsing_Staal_Schwengelbeck_Bollmers_Padberg_Eigner_Silberhorn_Scheytt_2024,
title={Quantum photonic systems in CMOS compatible silicon nitride technology
}, DOI={10.5281/zenodo.15124929},
publisher={Zenodo}, author={Schwabe, Tobias and Rüsing, Michael and Staal, Niels
and Schwengelbeck, Max and Bollmers, Laura and Padberg, Laura and Eigner, Christof
and Silberhorn, Christine and Scheytt, J. Christoph}, year={2024} }'
chicago: Schwabe, Tobias, Michael Rüsing, Niels Staal, Max Schwengelbeck, Laura
Bollmers, Laura Padberg, Christof Eigner, Christine Silberhorn, and J. Christoph
Scheytt. Quantum Photonic Systems in CMOS Compatible Silicon Nitride Technology
. Zenodo, 2024. https://doi.org/10.5281/zenodo.15124929.
ieee: T. Schwabe et al., Quantum photonic systems in CMOS compatible silicon
nitride technology . Zenodo, 2024.
mla: Schwabe, Tobias, et al. Quantum Photonic Systems in CMOS Compatible Silicon
Nitride Technology . Zenodo, 2024, doi:10.5281/zenodo.15124929.
short: T. Schwabe, M. Rüsing, N. Staal, M. Schwengelbeck, L. Bollmers, L. Padberg,
C. Eigner, C. Silberhorn, J.C. Scheytt, Quantum Photonic Systems in CMOS Compatible
Silicon Nitride Technology , Zenodo, 2024.
date_created: 2025-04-02T11:24:23Z
date_updated: 2025-04-03T12:34:56Z
department:
- _id: '288'
- _id: '15'
- _id: '623'
doi: 10.5281/zenodo.15124929
language:
- iso: eng
publisher: Zenodo
status: public
title: 'Quantum photonic systems in CMOS compatible silicon nitride technology '
type: misc
user_id: '22501'
year: '2024'
...
---
_id: '57862'
abstract:
- lang: eng
text: The latest applications in ultrafast quantum metrology require bright, broadband
bi-photon sources with one of the photons in the mid-infrared and the other in
the visible to near infrared. However, existing sources based on bulk crystals
are limited in brightness due to the short interaction length and only allow for
limited dispersion engineering. Here, we present an integrated PDC source based
on a Ti:LiNbO3 waveguide that generates broadband bi-photons with central wavelengths
at 860 nm and 2800 nm. Their spectral bandwidth exceeds 25 THz and is achieved
by simultaneous matching of the group velocities (GVs) and cancellation of GV
dispersion for the signal and idler field. We provide an intuitive understanding
of the process by studying our source’s behavior at different temperatures and
pump wavelengths, which agrees well with simulations.
article_number: '123025'
article_type: original
author:
- first_name: Franz
full_name: Roeder, Franz
id: '88149'
last_name: Roeder
- first_name: Abira
full_name: Gnanavel, Abira
last_name: Gnanavel
- first_name: René
full_name: Pollmann, René
id: '78890'
last_name: Pollmann
- first_name: Olga
full_name: Brecht, Olga
last_name: Brecht
- first_name: Michael
full_name: Stefszky, Michael
id: '42777'
last_name: Stefszky
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
citation:
ama: Roeder F, Gnanavel A, Pollmann R, et al. Ultra-broadband non-degenerate guided-wave
bi-photon source in the near and mid-infrared. New Journal of Physics.
2024;26(12). doi:10.1088/1367-2630/ad9f98
apa: Roeder, F., Gnanavel, A., Pollmann, R., Brecht, O., Stefszky, M., Padberg,
L., Eigner, C., Silberhorn, C., & Brecht, B. (2024). Ultra-broadband non-degenerate
guided-wave bi-photon source in the near and mid-infrared. New Journal of Physics,
26(12), Article 123025. https://doi.org/10.1088/1367-2630/ad9f98
bibtex: '@article{Roeder_Gnanavel_Pollmann_Brecht_Stefszky_Padberg_Eigner_Silberhorn_Brecht_2024,
title={Ultra-broadband non-degenerate guided-wave bi-photon source in the near
and mid-infrared}, volume={26}, DOI={10.1088/1367-2630/ad9f98},
number={12123025}, journal={New Journal of Physics}, publisher={IOP Publishing},
author={Roeder, Franz and Gnanavel, Abira and Pollmann, René and Brecht, Olga
and Stefszky, Michael and Padberg, Laura and Eigner, Christof and Silberhorn,
Christine and Brecht, Benjamin}, year={2024} }'
chicago: Roeder, Franz, Abira Gnanavel, René Pollmann, Olga Brecht, Michael Stefszky,
Laura Padberg, Christof Eigner, Christine Silberhorn, and Benjamin Brecht. “Ultra-Broadband
Non-Degenerate Guided-Wave Bi-Photon Source in the near and Mid-Infrared.” New
Journal of Physics 26, no. 12 (2024). https://doi.org/10.1088/1367-2630/ad9f98.
ieee: 'F. Roeder et al., “Ultra-broadband non-degenerate guided-wave bi-photon
source in the near and mid-infrared,” New Journal of Physics, vol. 26,
no. 12, Art. no. 123025, 2024, doi: 10.1088/1367-2630/ad9f98.'
mla: Roeder, Franz, et al. “Ultra-Broadband Non-Degenerate Guided-Wave Bi-Photon
Source in the near and Mid-Infrared.” New Journal of Physics, vol. 26,
no. 12, 123025, IOP Publishing, 2024, doi:10.1088/1367-2630/ad9f98.
short: F. Roeder, A. Gnanavel, R. Pollmann, O. Brecht, M. Stefszky, L. Padberg,
C. Eigner, C. Silberhorn, B. Brecht, New Journal of Physics 26 (2024).
date_created: 2024-12-27T19:01:14Z
date_updated: 2025-12-19T11:36:36Z
department:
- _id: '288'
- _id: '623'
- _id: '15'
doi: 10.1088/1367-2630/ad9f98
intvolume: ' 26'
issue: '12'
language:
- iso: eng
project:
- _id: '571'
name: 'MIRAQLS: MIRAQLS: Mid-infrared Quantum Technology for Sensing'
- _id: '190'
name: 'E2TPA: Exploiting Entangled Two-Photon Absorption'
publication: New Journal of Physics
publication_identifier:
issn:
- 1367-2630
publication_status: published
publisher: IOP Publishing
status: public
title: Ultra-broadband non-degenerate guided-wave bi-photon source in the near and
mid-infrared
type: journal_article
user_id: '78890'
volume: 26
year: '2024'
...
---
_id: '47997'
abstract:
- lang: eng
text: The crystal family of potassium titanyl phosphate (KTiOPO4) is a promising
material group for applications in quantum and nonlinear optics. The fabrication
of low-loss optical waveguides, as well as high-grade periodically poled ferroelectric
domain structures, requires a profound understanding of the material properties
and crystal structure. In this regard, Raman spectroscopy offers the possibility
to study and visualize domain structures, strain, defects, and the local stoichiometry,
which are all factors impacting device performance. However, the accurate interpretation
of Raman spectra and their changes with respect to extrinsic and intrinsic defects
requires a thorough assignment of the Raman modes to their respective crystal
features, which to date is only partly conducted based on phenomenological modelling.
To address this issue, we calculated the phonon spectra of potassium titanyl phosphate
and the related compounds rubidium titanyl phosphate (RbTiOPO4) and potassium
titanyl arsenate (KTiOAsO4) based on density functional theory and compared them
with experimental data. Overall, this allows us to assign various spectral features
to eigenmodes of lattice substructures with improved detail compared to previous
assignments. Nevertheless, the analysis also shows that not all features of the
spectra can unambigiously be explained yet. A possible explanation might be that
defects or long range fields not included in the modeling play a crucial rule
for the resulting Raman spectrum. In conclusion, this work provides an improved
foundation into the vibrational properties in the KTiOPO4 material family.
article_number: '1423'
author:
- first_name: Sergej
full_name: Neufeld, Sergej
last_name: Neufeld
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Gerhard
full_name: Berth, Gerhard
id: '53'
last_name: Berth
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
citation:
ama: Neufeld S, Gerstmann U, Padberg L, et al. Vibrational Properties of the Potassium
Titanyl Phosphate Crystal Family. Crystals. 2023;13(10). doi:10.3390/cryst13101423
apa: Neufeld, S., Gerstmann, U., Padberg, L., Eigner, C., Berth, G., Silberhorn,
C., Eng, L. M., Schmidt, W. G., & Rüsing, M. (2023). Vibrational Properties
of the Potassium Titanyl Phosphate Crystal Family. Crystals, 13(10),
Article 1423. https://doi.org/10.3390/cryst13101423
bibtex: '@article{Neufeld_Gerstmann_Padberg_Eigner_Berth_Silberhorn_Eng_Schmidt_Rüsing_2023,
title={Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family},
volume={13}, DOI={10.3390/cryst13101423},
number={101423}, journal={Crystals}, publisher={MDPI AG}, author={Neufeld, Sergej
and Gerstmann, Uwe and Padberg, Laura and Eigner, Christof and Berth, Gerhard
and Silberhorn, Christine and Eng, Lukas M. and Schmidt, Wolf Gero and Rüsing,
Michael}, year={2023} }'
chicago: Neufeld, Sergej, Uwe Gerstmann, Laura Padberg, Christof Eigner, Gerhard
Berth, Christine Silberhorn, Lukas M. Eng, Wolf Gero Schmidt, and Michael Rüsing.
“Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family.” Crystals
13, no. 10 (2023). https://doi.org/10.3390/cryst13101423.
ieee: 'S. Neufeld et al., “Vibrational Properties of the Potassium Titanyl
Phosphate Crystal Family,” Crystals, vol. 13, no. 10, Art. no. 1423, 2023,
doi: 10.3390/cryst13101423.'
mla: Neufeld, Sergej, et al. “Vibrational Properties of the Potassium Titanyl Phosphate
Crystal Family.” Crystals, vol. 13, no. 10, 1423, MDPI AG, 2023, doi:10.3390/cryst13101423.
short: S. Neufeld, U. Gerstmann, L. Padberg, C. Eigner, G. Berth, C. Silberhorn,
L.M. Eng, W.G. Schmidt, M. Rüsing, Crystals 13 (2023).
date_created: 2023-10-11T09:10:53Z
date_updated: 2023-10-11T09:15:58Z
department:
- _id: '169'
doi: 10.3390/cryst13101423
funded_apc: '1'
intvolume: ' 13'
issue: '10'
keyword:
- Inorganic Chemistry
- Condensed Matter Physics
- General Materials Science
- General Chemical Engineering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3390/cryst13101423
oa: '1'
project:
- _id: '168'
grant_number: '231447078'
name: 'TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften
von Lithiumniobat (B07*)'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '266'
grant_number: PROFILNRW-2020-067
name: 'PhoQC: PhoQC: Photonisches Quantencomputing'
publication: Crystals
publication_identifier:
issn:
- 2073-4352
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family
type: journal_article
user_id: '22501'
volume: 13
year: '2023'
...
---
_id: '54852'
abstract:
- lang: eng
text: The crystal family of potassium titanyl phosphate (KTiOPO4) is a promising
material group for applications in quantum and nonlinear optics. The fabrication
of low-loss optical waveguides, as well as high-grade periodically poled ferroelectric
domain structures, requires a profound understanding of the material properties
and crystal structure. In this regard, Raman spectroscopy offers the possibility
to study and visualize domain structures, strain, defects, and the local stoichiometry,
which are all factors impacting device performance. However, the accurate interpretation
of Raman spectra and their changes with respect to extrinsic and intrinsic defects
requires a thorough assignment of the Raman modes to their respective crystal
features, which to date is only partly conducted based on phenomenological modelling.
To address this issue, we calculated the phonon spectra of potassium titanyl phosphate
and the related compounds rubidium titanyl phosphate (RbTiOPO4) and potassium
titanyl arsenate (KTiOAsO4) based on density functional theory and compared them
with experimental data. Overall, this allows us to assign various spectral features
to eigenmodes of lattice substructures with improved detail compared to previous
assignments. Nevertheless, the analysis also shows that not all features of the
spectra can unambigiously be explained yet. A possible explanation might be that
defects or long range fields not included in the modeling play a crucial rule
for the resulting Raman spectrum. In conclusion, this work provides an improved
foundation into the vibrational properties in the KTiOPO4 material family.
article_number: '1423'
author:
- first_name: Sergej
full_name: Neufeld, Sergej
last_name: Neufeld
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Gerhard
full_name: Berth, Gerhard
id: '53'
last_name: Berth
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
citation:
ama: Neufeld S, Gerstmann U, Padberg L, et al. Vibrational Properties of the Potassium
Titanyl Phosphate Crystal Family. Crystals. 2023;13(10). doi:10.3390/cryst13101423
apa: Neufeld, S., Gerstmann, U., Padberg, L., Eigner, C., Berth, G., Silberhorn,
C., Eng, L. M., Schmidt, W. G., & Rüsing, M. (2023). Vibrational Properties
of the Potassium Titanyl Phosphate Crystal Family. Crystals, 13(10),
Article 1423. https://doi.org/10.3390/cryst13101423
bibtex: '@article{Neufeld_Gerstmann_Padberg_Eigner_Berth_Silberhorn_Eng_Schmidt_Rüsing_2023,
title={Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family},
volume={13}, DOI={10.3390/cryst13101423},
number={101423}, journal={Crystals}, publisher={MDPI AG}, author={Neufeld, Sergej
and Gerstmann, Uwe and Padberg, Laura and Eigner, Christof and Berth, Gerhard
and Silberhorn, Christine and Eng, Lukas M. and Schmidt, Wolf Gero and Rüsing,
Michael}, year={2023} }'
chicago: Neufeld, Sergej, Uwe Gerstmann, Laura Padberg, Christof Eigner, Gerhard
Berth, Christine Silberhorn, Lukas M. Eng, Wolf Gero Schmidt, and Michael Rüsing.
“Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family.” Crystals
13, no. 10 (2023). https://doi.org/10.3390/cryst13101423.
ieee: 'S. Neufeld et al., “Vibrational Properties of the Potassium Titanyl
Phosphate Crystal Family,” Crystals, vol. 13, no. 10, Art. no. 1423, 2023,
doi: 10.3390/cryst13101423.'
mla: Neufeld, Sergej, et al. “Vibrational Properties of the Potassium Titanyl Phosphate
Crystal Family.” Crystals, vol. 13, no. 10, 1423, MDPI AG, 2023, doi:10.3390/cryst13101423.
short: S. Neufeld, U. Gerstmann, L. Padberg, C. Eigner, G. Berth, C. Silberhorn,
L.M. Eng, W.G. Schmidt, M. Rüsing, Crystals 13 (2023).
date_created: 2024-06-24T06:15:00Z
date_updated: 2024-06-24T06:30:23Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '288'
- _id: '230'
- _id: '429'
doi: 10.3390/cryst13101423
intvolume: ' 13'
issue: '10'
language:
- iso: eng
project:
- _id: '53'
grant_number: '231447078'
name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden
Konzepten zu funktionellen Strukturen'
publication: Crystals
publication_identifier:
issn:
- 2073-4352
publication_status: published
publisher: MDPI AG
status: public
title: Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family
type: journal_article
user_id: '16199'
volume: 13
year: '2023'
...
---
_id: '45850'
abstract:
- lang: eng
text: Interference between single photons is key for many quantum optics experiments
and applications in quantum technologies, such as quantum communication or computation.
It is advantageous to operate the systems at telecommunication wavelengths and
to integrate the setups for these applications in order to improve stability,
compactness and scalability. A new promising material platform for integrated
quantum optics is lithium niobate on insulator (LNOI). Here, we realise Hong-Ou-Mandel
(HOM) interference between telecom photons from an engineered parametric down-conversion
source in an LNOI directional coupler. The coupler has been designed and fabricated
in house and provides close to perfect balanced beam splitting. We obtain a raw
HOM visibility of (93.5 ± 0.7) %, limited mainly by the source performance and
in good agreement with off-chip measurements. This lays the foundation for more
sophisticated quantum experiments in LNOI.
article_number: '23140'
author:
- first_name: Silia
full_name: Babel, Silia
id: '63231'
last_name: Babel
orcid: https://orcid.org/0000-0002-1568-2580
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Marcello
full_name: Massaro, Marcello
id: '59545'
last_name: Massaro
orcid: 0000-0002-2539-7652
- first_name: Kai Hong
full_name: Luo, Kai Hong
id: '36389'
last_name: Luo
orcid: 0000-0003-1008-4976
- first_name: Michael
full_name: Stefszky, Michael
id: '42777'
last_name: Stefszky
- first_name: Federico
full_name: Pegoraro, Federico
id: '88928'
last_name: Pegoraro
- first_name: Philip
full_name: Held, Philip
id: '68236'
last_name: Held
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Babel S, Bollmers L, Massaro M, et al. Demonstration of Hong-Ou-Mandel interference
in an LNOI directional coupler. Optics Express. 2023;31(14). doi:10.1364/oe.484126
apa: Babel, S., Bollmers, L., Massaro, M., Luo, K. H., Stefszky, M., Pegoraro, F.,
Held, P., Herrmann, H., Eigner, C., Brecht, B., Padberg, L., & Silberhorn,
C. (2023). Demonstration of Hong-Ou-Mandel interference in an LNOI directional
coupler. Optics Express, 31(14), Article 23140. https://doi.org/10.1364/oe.484126
bibtex: '@article{Babel_Bollmers_Massaro_Luo_Stefszky_Pegoraro_Held_Herrmann_Eigner_Brecht_et
al._2023, title={Demonstration of Hong-Ou-Mandel interference in an LNOI directional
coupler}, volume={31}, DOI={10.1364/oe.484126},
number={1423140}, journal={Optics Express}, publisher={Optica Publishing Group},
author={Babel, Silia and Bollmers, Laura and Massaro, Marcello and Luo, Kai Hong
and Stefszky, Michael and Pegoraro, Federico and Held, Philip and Herrmann, Harald
and Eigner, Christof and Brecht, Benjamin and et al.}, year={2023} }'
chicago: Babel, Silia, Laura Bollmers, Marcello Massaro, Kai Hong Luo, Michael Stefszky,
Federico Pegoraro, Philip Held, et al. “Demonstration of Hong-Ou-Mandel Interference
in an LNOI Directional Coupler.” Optics Express 31, no. 14 (2023). https://doi.org/10.1364/oe.484126.
ieee: 'S. Babel et al., “Demonstration of Hong-Ou-Mandel interference in
an LNOI directional coupler,” Optics Express, vol. 31, no. 14, Art. no.
23140, 2023, doi: 10.1364/oe.484126.'
mla: Babel, Silia, et al. “Demonstration of Hong-Ou-Mandel Interference in an LNOI
Directional Coupler.” Optics Express, vol. 31, no. 14, 23140, Optica Publishing
Group, 2023, doi:10.1364/oe.484126.
short: S. Babel, L. Bollmers, M. Massaro, K.H. Luo, M. Stefszky, F. Pegoraro, P.
Held, H. Herrmann, C. Eigner, B. Brecht, L. Padberg, C. Silberhorn, Optics Express
31 (2023).
date_created: 2023-07-03T14:08:36Z
date_updated: 2023-07-05T07:58:31Z
department:
- _id: '15'
- _id: '230'
- _id: '623'
- _id: '288'
doi: 10.1364/oe.484126
intvolume: ' 31'
issue: '14'
keyword:
- Atomic and Molecular Physics
- and Optics
language:
- iso: eng
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler
type: journal_article
user_id: '63231'
volume: 31
year: '2023'
...
---
_id: '61362'
abstract:
- lang: eng
text: We study the interaction of gray tracking and DC ionic conductivity
in Potassium Titanyl Phosphate (KTiOPO4, KTP) and present
a novel way to reduce conductivity via a potassium nitrate treatment improving
the device quality.
author:
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Viktor
full_name: Quiring, Viktor
last_name: Quiring
- first_name: Adriana
full_name: Bocchini, Adriana
id: '58349'
last_name: Bocchini
orcid: 0000-0002-2134-3075
- first_name: Matteo
full_name: Santandrea, Matteo
id: '55095'
last_name: Santandrea
orcid: 0000-0001-5718-358X
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: 'Eigner C, Padberg L, Quiring V, et al. Potassium Titanyl Phosphate Material
Engineering Boosting Integrated Optical Source Performance. In: CLEO 2023.
Optica Publishing Group; 2023. doi:10.1364/cleo_at.2023.jw2a.57'
apa: Eigner, C., Padberg, L., Quiring, V., Bocchini, A., Santandrea, M., Gerstmann,
U., Schmidt, W. G., & Silberhorn, C. (2023). Potassium Titanyl Phosphate Material
Engineering Boosting Integrated Optical Source Performance. CLEO 2023.
https://doi.org/10.1364/cleo_at.2023.jw2a.57
bibtex: '@inproceedings{Eigner_Padberg_Quiring_Bocchini_Santandrea_Gerstmann_Schmidt_Silberhorn_2023,
title={Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical
Source Performance}, DOI={10.1364/cleo_at.2023.jw2a.57},
booktitle={CLEO 2023}, publisher={Optica Publishing Group}, author={Eigner, Christof
and Padberg, Laura and Quiring, Viktor and Bocchini, Adriana and Santandrea, Matteo
and Gerstmann, Uwe and Schmidt, Wolf Gero and Silberhorn, Christine}, year={2023}
}'
chicago: Eigner, Christof, Laura Padberg, Viktor Quiring, Adriana Bocchini, Matteo
Santandrea, Uwe Gerstmann, Wolf Gero Schmidt, and Christine Silberhorn. “Potassium
Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance.”
In CLEO 2023. Optica Publishing Group, 2023. https://doi.org/10.1364/cleo_at.2023.jw2a.57.
ieee: 'C. Eigner et al., “Potassium Titanyl Phosphate Material Engineering
Boosting Integrated Optical Source Performance,” 2023, doi: 10.1364/cleo_at.2023.jw2a.57.'
mla: Eigner, Christof, et al. “Potassium Titanyl Phosphate Material Engineering
Boosting Integrated Optical Source Performance.” CLEO 2023, Optica Publishing
Group, 2023, doi:10.1364/cleo_at.2023.jw2a.57.
short: 'C. Eigner, L. Padberg, V. Quiring, A. Bocchini, M. Santandrea, U. Gerstmann,
W.G. Schmidt, C. Silberhorn, in: CLEO 2023, Optica Publishing Group, 2023.'
date_created: 2025-09-18T12:06:19Z
date_updated: 2025-09-18T12:08:56Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '790'
- _id: '288'
- _id: '230'
- _id: '429'
- _id: '35'
- _id: '27'
doi: 10.1364/cleo_at.2023.jw2a.57
language:
- iso: eng
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
- _id: '54'
name: TRR 142 - Project Area A
- _id: '55'
name: TRR 142 - Project Area B
- _id: '168'
name: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat
(B07*)
- _id: '166'
name: TRR 142 - Subproject A11
publication: CLEO 2023
publication_status: published
publisher: Optica Publishing Group
status: public
title: Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical
Source Performance
type: conference
user_id: '16199'
year: '2023'
...
---
_id: '33484'
abstract:
- lang: eng
text: We study the DC conductivity in potassium titanyl phosphate (KTiOPO4, KTP)
and its isomorphs KTiOAsO4 (KTA) and Rb1%K99%TiOPO4 (RKTP) and introduce a method
by which to reduce the overall ionic conductivity in KTP by a potassium nitrate
treatment. Furthermore, we create so-called gray tracking in KTP and investigate
the ionic conductivity in theses areas. A local unintended reduction of the ionic
conductivity is observed in the gray-tracked regions, which also induce additional
optical absorption in the material. We show that a thermal treatment in an oxygen-rich
atmosphere removes the gray tracking and brings the ionic conductivity as well
as the optical transmission back to the original level. These studies can help
to choose the best material and treatment for specific applications.
author:
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Viktor
full_name: Quiring, Viktor
last_name: Quiring
- first_name: Adriana
full_name: Bocchini, Adriana
id: '58349'
last_name: Bocchini
orcid: 0000-0002-2134-3075
- first_name: Matteo
full_name: Santandrea, Matteo
id: '55095'
last_name: Santandrea
orcid: 0000-0001-5718-358X
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
citation:
ama: 'Padberg L, Quiring V, Bocchini A, et al. DC Ionic Conductivity in KTP and
Its Isomorphs: Properties, Methods for Suppression, and Its Connection to Gray
Tracking. Crystals. 2022;12:1359. doi:10.3390/cryst12101359'
apa: 'Padberg, L., Quiring, V., Bocchini, A., Santandrea, M., Gerstmann, U., Schmidt,
W. G., Silberhorn, C., & Eigner, C. (2022). DC Ionic Conductivity in KTP and
Its Isomorphs: Properties, Methods for Suppression, and Its Connection to Gray
Tracking. Crystals, 12, 1359. https://doi.org/10.3390/cryst12101359'
bibtex: '@article{Padberg_Quiring_Bocchini_Santandrea_Gerstmann_Schmidt_Silberhorn_Eigner_2022,
title={DC Ionic Conductivity in KTP and Its Isomorphs: Properties, Methods for
Suppression, and Its Connection to Gray Tracking}, volume={12}, DOI={10.3390/cryst12101359},
journal={Crystals}, author={Padberg, Laura and Quiring, Viktor and Bocchini, Adriana
and Santandrea, Matteo and Gerstmann, Uwe and Schmidt, Wolf Gero and Silberhorn,
Christine and Eigner, Christof}, year={2022}, pages={1359} }'
chicago: 'Padberg, Laura, Viktor Quiring, Adriana Bocchini, Matteo Santandrea, Uwe
Gerstmann, Wolf Gero Schmidt, Christine Silberhorn, and Christof Eigner. “DC Ionic
Conductivity in KTP and Its Isomorphs: Properties, Methods for Suppression, and
Its Connection to Gray Tracking.” Crystals 12 (2022): 1359. https://doi.org/10.3390/cryst12101359.'
ieee: 'L. Padberg et al., “DC Ionic Conductivity in KTP and Its Isomorphs:
Properties, Methods for Suppression, and Its Connection to Gray Tracking,” Crystals,
vol. 12, p. 1359, 2022, doi: 10.3390/cryst12101359.'
mla: 'Padberg, Laura, et al. “DC Ionic Conductivity in KTP and Its Isomorphs: Properties,
Methods for Suppression, and Its Connection to Gray Tracking.” Crystals,
vol. 12, 2022, p. 1359, doi:10.3390/cryst12101359.'
short: L. Padberg, V. Quiring, A. Bocchini, M. Santandrea, U. Gerstmann, W.G. Schmidt,
C. Silberhorn, C. Eigner, Crystals 12 (2022) 1359.
date_created: 2022-09-26T13:12:48Z
date_updated: 2023-04-21T11:07:11Z
department:
- _id: '15'
- _id: '288'
- _id: '623'
- _id: '170'
- _id: '295'
- _id: '230'
- _id: '429'
- _id: '35'
- _id: '790'
doi: 10.3390/cryst12101359
intvolume: ' 12'
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
page: '1359'
project:
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '168'
name: 'TRR 142 - B07: TRR 142 - Subproject B07'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '166'
name: 'TRR 142 - A11: TRR 142 - Subproject A11'
publication: Crystals
publication_identifier:
issn:
- 2073-4352
status: public
title: 'DC Ionic Conductivity in KTP and Its Isomorphs: Properties, Methods for Suppression,
and Its Connection to Gray Tracking'
type: journal_article
user_id: '171'
volume: 12
year: '2022'
...
---
_id: '23826'
abstract:
- lang: eng
text: Potassium titanyl phosphate (KTP) is a nonlinear optical material
with applications in high-power frequency conversion or quasi-phase matching in
submicron period domain grids. A prerequisite for these applications is a precise
control and understanding of the poling mechanisms to enable the fabrication of
high-grade domain grids. In contrast to the widely used material lithium niobate,
the domain growth in KTP is less studied, because many standard methods, such
as selective etching or polarization microscopy, provides less insight or are
not applicable on non-polar surfaces, respectively. In this work, we present results
of confocal Raman-spectroscopy of the ferroelectric domain structure in KTP. This
analytical method allows for the visualization of domain grids of the non-polar
KTP y-face and therefore more insight into the domain-growth and -structure in
KTP, which can be used for improved domain fabrication.
article_number: '1086'
author:
- first_name: Julian
full_name: Brockmeier, Julian
id: '44807'
last_name: Brockmeier
- first_name: Peter Walter Martin
full_name: Mackwitz, Peter Walter Martin
last_name: Mackwitz
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Matteo
full_name: Santandrea, Matteo
id: '55095'
last_name: Santandrea
orcid: 0000-0001-5718-358X
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Artur
full_name: Zrenner, Artur
id: '606'
last_name: Zrenner
orcid: 0000-0002-5190-0944
- first_name: Gerhard
full_name: Berth, Gerhard
id: '53'
last_name: Berth
citation:
ama: Brockmeier J, Mackwitz PWM, Rüsing M, et al. Non-Invasive Visualization of
Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman
Imaging. Crystals. Published online 2021. doi:10.3390/cryst11091086
apa: Brockmeier, J., Mackwitz, P. W. M., Rüsing, M., Eigner, C., Padberg, L., Santandrea,
M., Silberhorn, C., Zrenner, A., & Berth, G. (2021). Non-Invasive Visualization
of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman
Imaging. Crystals, Article 1086. https://doi.org/10.3390/cryst11091086
bibtex: '@article{Brockmeier_Mackwitz_Rüsing_Eigner_Padberg_Santandrea_Silberhorn_Zrenner_Berth_2021,
title={Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar
y-Surface of KTiOPO4 via Raman Imaging}, DOI={10.3390/cryst11091086},
number={1086}, journal={Crystals}, author={Brockmeier, Julian and Mackwitz, Peter
Walter Martin and Rüsing, Michael and Eigner, Christof and Padberg, Laura and
Santandrea, Matteo and Silberhorn, Christine and Zrenner, Artur and Berth, Gerhard},
year={2021} }'
chicago: Brockmeier, Julian, Peter Walter Martin Mackwitz, Michael Rüsing, Christof
Eigner, Laura Padberg, Matteo Santandrea, Christine Silberhorn, Artur Zrenner,
and Gerhard Berth. “Non-Invasive Visualization of Ferroelectric Domain Structures
on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging.” Crystals, 2021.
https://doi.org/10.3390/cryst11091086.
ieee: 'J. Brockmeier et al., “Non-Invasive Visualization of Ferroelectric
Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging,” Crystals,
Art. no. 1086, 2021, doi: 10.3390/cryst11091086.'
mla: Brockmeier, Julian, et al. “Non-Invasive Visualization of Ferroelectric Domain
Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging.” Crystals,
1086, 2021, doi:10.3390/cryst11091086.
short: J. Brockmeier, P.W.M. Mackwitz, M. Rüsing, C. Eigner, L. Padberg, M. Santandrea,
C. Silberhorn, A. Zrenner, G. Berth, Crystals (2021).
date_created: 2021-09-07T08:09:36Z
date_updated: 2023-10-06T07:40:37Z
department:
- _id: '15'
- _id: '288'
doi: 10.3390/cryst11091086
language:
- iso: eng
publication: Crystals
publication_identifier:
issn:
- 2073-4352
publication_status: published
status: public
title: Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar
y-Surface of KTiOPO4 via Raman Imaging
type: journal_article
user_id: '13244'
year: '2021'
...
---
_id: '38135'
author:
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: 'Matteo '
full_name: 'Santandrea, Matteo '
last_name: Santandrea
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Padberg L, Eigner C, Santandrea M, Silberhorn C. Production of waveguides made
of materials from the KTP family. Published online 2021.
apa: Padberg, L., Eigner, C., Santandrea, M., & Silberhorn, C. (2021). Production
of waveguides made of materials from the KTP family.
bibtex: '@article{Padberg_Eigner_Santandrea_Silberhorn_2021, title={Production of
waveguides made of materials from the KTP family}, author={Padberg, Laura and
Eigner, Christof and Santandrea, Matteo and Silberhorn, Christine}, year={2021}
}'
chicago: Padberg, Laura, Christof Eigner, Matteo Santandrea, and Christine Silberhorn.
“Production of Waveguides Made of Materials from the KTP Family,” 2021.
ieee: L. Padberg, C. Eigner, M. Santandrea, and C. Silberhorn, “Production of waveguides
made of materials from the KTP family.” 2021.
mla: Padberg, Laura, et al. Production of Waveguides Made of Materials from the
KTP Family. 2021.
short: L. Padberg, C. Eigner, M. Santandrea, C. Silberhorn, (2021).
date_created: 2023-01-23T14:34:53Z
date_updated: 2023-01-23T14:35:06Z
department:
- _id: '288'
- _id: '623'
- _id: '15'
ipc: G02F 1/355
ipn: US 2021/0033944 A1
publication_date: 2021-02-04
status: public
title: Production of waveguides made of materials from the KTP family
type: patent
user_id: '40300'
year: '2021'
...
---
_id: '25920'
article_number: '24353'
author:
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Matteo
full_name: Santandrea, Matteo
id: '55095'
last_name: Santandrea
orcid: 0000-0001-5718-358X
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Julian
full_name: Brockmeier, Julian
id: '44807'
last_name: Brockmeier
- first_name: Peter
full_name: Mackwitz, Peter
last_name: Mackwitz
- first_name: Gerhard
full_name: Berth, Gerhard
id: '53'
last_name: Berth
- first_name: Artur
full_name: Zrenner, Artur
id: '606'
last_name: Zrenner
orcid: 0000-0002-5190-0944
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Padberg L, Santandrea M, Rüsing M, et al. Characterisation of width-dependent
diffusion dynamics in rubidium-exchanged KTP waveguides. Optics Express.
Published online 2020. doi:10.1364/oe.397074
apa: Padberg, L., Santandrea, M., Rüsing, M., Brockmeier, J., Mackwitz, P., Berth,
G., Zrenner, A., Eigner, C., & Silberhorn, C. (2020). Characterisation of
width-dependent diffusion dynamics in rubidium-exchanged KTP waveguides. Optics
Express, Article 24353. https://doi.org/10.1364/oe.397074
bibtex: '@article{Padberg_Santandrea_Rüsing_Brockmeier_Mackwitz_Berth_Zrenner_Eigner_Silberhorn_2020,
title={Characterisation of width-dependent diffusion dynamics in rubidium-exchanged
KTP waveguides}, DOI={10.1364/oe.397074},
number={24353}, journal={Optics Express}, author={Padberg, Laura and Santandrea,
Matteo and Rüsing, Michael and Brockmeier, Julian and Mackwitz, Peter and Berth,
Gerhard and Zrenner, Artur and Eigner, Christof and Silberhorn, Christine}, year={2020}
}'
chicago: Padberg, Laura, Matteo Santandrea, Michael Rüsing, Julian Brockmeier, Peter
Mackwitz, Gerhard Berth, Artur Zrenner, Christof Eigner, and Christine Silberhorn.
“Characterisation of Width-Dependent Diffusion Dynamics in Rubidium-Exchanged
KTP Waveguides.” Optics Express, 2020. https://doi.org/10.1364/oe.397074.
ieee: 'L. Padberg et al., “Characterisation of width-dependent diffusion
dynamics in rubidium-exchanged KTP waveguides,” Optics Express, Art. no.
24353, 2020, doi: 10.1364/oe.397074.'
mla: Padberg, Laura, et al. “Characterisation of Width-Dependent Diffusion Dynamics
in Rubidium-Exchanged KTP Waveguides.” Optics Express, 24353, 2020, doi:10.1364/oe.397074.
short: L. Padberg, M. Santandrea, M. Rüsing, J. Brockmeier, P. Mackwitz, G. Berth,
A. Zrenner, C. Eigner, C. Silberhorn, Optics Express (2020).
date_created: 2021-10-08T11:12:36Z
date_updated: 2023-10-09T08:27:41Z
department:
- _id: '15'
- _id: '288'
doi: 10.1364/oe.397074
language:
- iso: eng
project:
- _id: '55'
name: TRR 142 - Project Area B
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
status: public
title: Characterisation of width-dependent diffusion dynamics in rubidium-exchanged
KTP waveguides
type: journal_article
user_id: '14931'
year: '2020'
...
---
_id: '21025'
article_number: 32925-32935
author:
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Matteo
full_name: Santandrea, Matteo
id: '55095'
last_name: Santandrea
orcid: 0000-0001-5718-358X
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Eigner C, Padberg L, Santandrea M, Herrmann H, Brecht B, Silberhorn C. Spatially
single mode photon pair source at 800 nm in periodically poled Rubidium exchanged
KTP waveguides. Optics Express. 2020;28(22). doi:10.1364/oe.399483
apa: Eigner, C., Padberg, L., Santandrea, M., Herrmann, H., Brecht, B., & Silberhorn,
C. (2020). Spatially single mode photon pair source at 800 nm in periodically
poled Rubidium exchanged KTP waveguides. Optics Express, 28(22),
Article 32925–32935. https://doi.org/10.1364/oe.399483
bibtex: '@article{Eigner_Padberg_Santandrea_Herrmann_Brecht_Silberhorn_2020, title={Spatially
single mode photon pair source at 800 nm in periodically poled Rubidium exchanged
KTP waveguides}, volume={28}, DOI={10.1364/oe.399483},
number={2232925–32935}, journal={Optics Express}, author={Eigner, Christof and
Padberg, Laura and Santandrea, Matteo and Herrmann, Harald and Brecht, Benjamin
and Silberhorn, Christine}, year={2020} }'
chicago: Eigner, Christof, Laura Padberg, Matteo Santandrea, Harald Herrmann, Benjamin
Brecht, and Christine Silberhorn. “Spatially Single Mode Photon Pair Source at
800 Nm in Periodically Poled Rubidium Exchanged KTP Waveguides.” Optics Express
28, no. 22 (2020). https://doi.org/10.1364/oe.399483.
ieee: 'C. Eigner, L. Padberg, M. Santandrea, H. Herrmann, B. Brecht, and C. Silberhorn,
“Spatially single mode photon pair source at 800 nm in periodically poled Rubidium
exchanged KTP waveguides,” Optics Express, vol. 28, no. 22, Art. no. 32925–32935,
2020, doi: 10.1364/oe.399483.'
mla: Eigner, Christof, et al. “Spatially Single Mode Photon Pair Source at 800 Nm
in Periodically Poled Rubidium Exchanged KTP Waveguides.” Optics Express,
vol. 28, no. 22, 32925–32935, 2020, doi:10.1364/oe.399483.
short: C. Eigner, L. Padberg, M. Santandrea, H. Herrmann, B. Brecht, C. Silberhorn,
Optics Express 28 (2020).
date_created: 2021-01-20T08:35:45Z
date_updated: 2023-02-01T12:46:27Z
department:
- _id: '15'
- _id: '230'
- _id: '429'
- _id: '288'
doi: 10.1364/oe.399483
intvolume: ' 28'
issue: '22'
language:
- iso: eng
project:
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
status: public
title: Spatially single mode photon pair source at 800 nm in periodically poled Rubidium
exchanged KTP waveguides
type: journal_article
user_id: '13244'
volume: 28
year: '2020'
...
---
_id: '38138'
author:
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Matteo
full_name: Santandrea, Matteo
last_name: Santandrea
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Padberg L, Eigner C, Santandrea M, Silberhorn C. Herstellung von Wellenleitern
aus Materialien der KTP-Familie. Published online 2019.
apa: Padberg, L., Eigner, C., Santandrea, M., & Silberhorn, C. (2019). Herstellung
von Wellenleitern aus Materialien der KTP-Familie.
bibtex: '@article{Padberg_Eigner_Santandrea_Silberhorn_2019, title={Herstellung
von Wellenleitern aus Materialien der KTP-Familie}, author={Padberg, Laura and
Eigner, Christof and Santandrea, Matteo and Silberhorn, Christine}, year={2019}
}'
chicago: Padberg, Laura, Christof Eigner, Matteo Santandrea, and Christine Silberhorn.
“Herstellung von Wellenleitern Aus Materialien Der KTP-Familie,” 2019.
ieee: L. Padberg, C. Eigner, M. Santandrea, and C. Silberhorn, “Herstellung von
Wellenleitern aus Materialien der KTP-Familie.” 2019.
mla: Padberg, Laura, et al. Herstellung von Wellenleitern Aus Materialien Der
KTP-Familie. 2019.
short: L. Padberg, C. Eigner, M. Santandrea, C. Silberhorn, (2019).
date_created: 2023-01-23T14:38:17Z
date_updated: 2023-01-23T14:38:21Z
department:
- _id: '288'
- _id: '623'
- _id: '15'
ipc: C30B 31/04
ipn: DE 10 2018 108 636 A1
publication_date: 2019-10-17
status: public
title: Herstellung von Wellenleitern aus Materialien der KTP-Familie
type: patent
user_id: '40300'
year: '2019'
...
---
_id: '9614'
article_number: '28827'
author:
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Matteo
full_name: Santandrea, Matteo
id: '55095'
last_name: Santandrea
orcid: 0000-0001-5718-358X
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Martin F.
full_name: Volk, Martin F.
last_name: Volk
- first_name: Christian E.
full_name: Rüter, Christian E.
last_name: Rüter
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Detlef
full_name: Kip, Detlef
last_name: Kip
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Eigner C, Santandrea M, Padberg L, et al. Periodically poled ridge waveguides
in KTP for second harmonic generation in the UV regime. Optics Express.
Published online 2018. doi:10.1364/oe.26.028827
apa: Eigner, C., Santandrea, M., Padberg, L., Volk, M. F., Rüter, C. E., Herrmann,
H., Kip, D., & Silberhorn, C. (2018). Periodically poled ridge waveguides
in KTP for second harmonic generation in the UV regime. Optics Express,
Article 28827. https://doi.org/10.1364/oe.26.028827
bibtex: '@article{Eigner_Santandrea_Padberg_Volk_Rüter_Herrmann_Kip_Silberhorn_2018,
title={Periodically poled ridge waveguides in KTP for second harmonic generation
in the UV regime}, DOI={10.1364/oe.26.028827},
number={28827}, journal={Optics Express}, author={Eigner, Christof and Santandrea,
Matteo and Padberg, Laura and Volk, Martin F. and Rüter, Christian E. and Herrmann,
Harald and Kip, Detlef and Silberhorn, Christine}, year={2018} }'
chicago: Eigner, Christof, Matteo Santandrea, Laura Padberg, Martin F. Volk, Christian
E. Rüter, Harald Herrmann, Detlef Kip, and Christine Silberhorn. “Periodically
Poled Ridge Waveguides in KTP for Second Harmonic Generation in the UV Regime.”
Optics Express, 2018. https://doi.org/10.1364/oe.26.028827.
ieee: 'C. Eigner et al., “Periodically poled ridge waveguides in KTP for
second harmonic generation in the UV regime,” Optics Express, Art. no.
28827, 2018, doi: 10.1364/oe.26.028827.'
mla: Eigner, Christof, et al. “Periodically Poled Ridge Waveguides in KTP for Second
Harmonic Generation in the UV Regime.” Optics Express, 28827, 2018, doi:10.1364/oe.26.028827.
short: C. Eigner, M. Santandrea, L. Padberg, M.F. Volk, C.E. Rüter, H. Herrmann,
D. Kip, C. Silberhorn, Optics Express (2018).
date_created: 2019-05-06T09:08:47Z
date_updated: 2022-01-06T07:04:17Z
doi: 10.1364/oe.26.028827
language:
- iso: eng
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
status: public
title: Periodically poled ridge waveguides in KTP for second harmonic generation in
the UV regime
type: journal_article
user_id: '13244'
year: '2018'
...
---
_id: '9619'
article_number: '2764'
author:
- first_name: V.
full_name: Ansari, V.
last_name: Ansari
- first_name: E.
full_name: Roccia, E.
last_name: Roccia
- first_name: Matteo
full_name: Santandrea, Matteo
id: '55095'
last_name: Santandrea
orcid: 0000-0001-5718-358X
- first_name: M.
full_name: Doostdar, M.
last_name: Doostdar
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: I.
full_name: Gianani, I.
last_name: Gianani
- first_name: M.
full_name: Sbroscia, M.
last_name: Sbroscia
- first_name: J. M.
full_name: Donohue, J. M.
last_name: Donohue
- first_name: L.
full_name: Mancino, L.
last_name: Mancino
- first_name: M.
full_name: Barbieri, M.
last_name: Barbieri
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Ansari V, Roccia E, Santandrea M, et al. Heralded generation of high-purity
ultrashort single photons in programmable temporal shapes. Optics Express.
Published online 2018. doi:10.1364/oe.26.002764
apa: Ansari, V., Roccia, E., Santandrea, M., Doostdar, M., Eigner, C., Padberg,
L., Gianani, I., Sbroscia, M., Donohue, J. M., Mancino, L., Barbieri, M., &
Silberhorn, C. (2018). Heralded generation of high-purity ultrashort single photons
in programmable temporal shapes. Optics Express, Article 2764. https://doi.org/10.1364/oe.26.002764
bibtex: '@article{Ansari_Roccia_Santandrea_Doostdar_Eigner_Padberg_Gianani_Sbroscia_Donohue_Mancino_et
al._2018, title={Heralded generation of high-purity ultrashort single photons
in programmable temporal shapes}, DOI={10.1364/oe.26.002764},
number={2764}, journal={Optics Express}, author={Ansari, V. and Roccia, E. and
Santandrea, Matteo and Doostdar, M. and Eigner, Christof and Padberg, Laura and
Gianani, I. and Sbroscia, M. and Donohue, J. M. and Mancino, L. and et al.}, year={2018}
}'
chicago: Ansari, V., E. Roccia, Matteo Santandrea, M. Doostdar, Christof Eigner,
Laura Padberg, I. Gianani, et al. “Heralded Generation of High-Purity Ultrashort
Single Photons in Programmable Temporal Shapes.” Optics Express, 2018.
https://doi.org/10.1364/oe.26.002764.
ieee: 'V. Ansari et al., “Heralded generation of high-purity ultrashort single
photons in programmable temporal shapes,” Optics Express, Art. no. 2764,
2018, doi: 10.1364/oe.26.002764.'
mla: Ansari, V., et al. “Heralded Generation of High-Purity Ultrashort Single Photons
in Programmable Temporal Shapes.” Optics Express, 2764, 2018, doi:10.1364/oe.26.002764.
short: V. Ansari, E. Roccia, M. Santandrea, M. Doostdar, C. Eigner, L. Padberg,
I. Gianani, M. Sbroscia, J.M. Donohue, L. Mancino, M. Barbieri, C. Silberhorn,
Optics Express (2018).
date_created: 2019-05-06T10:53:11Z
date_updated: 2022-01-06T07:04:17Z
doi: 10.1364/oe.26.002764
language:
- iso: eng
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
status: public
title: Heralded generation of high-purity ultrashort single photons in programmable
temporal shapes
type: journal_article
user_id: '13244'
year: '2018'
...