---
_id: '47958'
abstract:
- lang: eng
text: High-fidelity periodic poling over long lengths is required for robust, quasi-phase-matched
second-harmonic generation using the fundamental, quasi-TE polarized waveguide
modes in a thin-film lithium niobate (TFLN) waveguide. Here, a shallow-etched
ridge waveguide is fabricated in x-cut magnesium oxide doped TFLN and is poled
accurately over 5 mm. The high fidelity of the poling is demonstrated over long
lengths using a non-destructive technique of confocal scanning second-harmonic
microscopy. We report a second-harmonic conversion efficiency of up to 939 %/W
(length-normalized conversion efficiency 3757 %/Wcm²), measured at telecommunications
wavelengths. The device demonstrates a narrow spectral linewidth (1 nm) and can
be tuned precisely with a tuning characteristic of 0.1 nm/°C, over at least 40
°C without measurable loss of efficiency.
article_number: '19669'
article_type: original
author:
- first_name: Jie
full_name: Zhao, Jie
last_name: Zhao
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Usman A.
full_name: Javid, Usman A.
last_name: Javid
- first_name: Jingwei
full_name: Ling, Jingwei
last_name: Ling
- first_name: Mingxiao
full_name: Li, Mingxiao
last_name: Li
- first_name: Qiang
full_name: Lin, Qiang
last_name: Lin
- first_name: Shayan
full_name: Mookherjea, Shayan
last_name: Mookherjea
citation:
ama: Zhao J, Rüsing M, Javid UA, et al. Shallow-etched thin-film lithium niobate
waveguides for highly-efficient second-harmonic generation. Optics Express.
2020;28(13). doi:10.1364/oe.395545
apa: Zhao, J., Rüsing, M., Javid, U. A., Ling, J., Li, M., Lin, Q., & Mookherjea,
S. (2020). Shallow-etched thin-film lithium niobate waveguides for highly-efficient
second-harmonic generation. Optics Express, 28(13), Article 19669.
https://doi.org/10.1364/oe.395545
bibtex: '@article{Zhao_Rüsing_Javid_Ling_Li_Lin_Mookherjea_2020, title={Shallow-etched
thin-film lithium niobate waveguides for highly-efficient second-harmonic generation},
volume={28}, DOI={10.1364/oe.395545},
number={1319669}, journal={Optics Express}, publisher={Optica Publishing Group},
author={Zhao, Jie and Rüsing, Michael and Javid, Usman A. and Ling, Jingwei and
Li, Mingxiao and Lin, Qiang and Mookherjea, Shayan}, year={2020} }'
chicago: Zhao, Jie, Michael Rüsing, Usman A. Javid, Jingwei Ling, Mingxiao Li, Qiang
Lin, and Shayan Mookherjea. “Shallow-Etched Thin-Film Lithium Niobate Waveguides
for Highly-Efficient Second-Harmonic Generation.” Optics Express 28, no.
13 (2020). https://doi.org/10.1364/oe.395545.
ieee: 'J. Zhao et al., “Shallow-etched thin-film lithium niobate waveguides
for highly-efficient second-harmonic generation,” Optics Express, vol.
28, no. 13, Art. no. 19669, 2020, doi: 10.1364/oe.395545.'
mla: Zhao, Jie, et al. “Shallow-Etched Thin-Film Lithium Niobate Waveguides for
Highly-Efficient Second-Harmonic Generation.” Optics Express, vol. 28,
no. 13, 19669, Optica Publishing Group, 2020, doi:10.1364/oe.395545.
short: J. Zhao, M. Rüsing, U.A. Javid, J. Ling, M. Li, Q. Lin, S. Mookherjea, Optics
Express 28 (2020).
date_created: 2023-10-11T08:09:52Z
date_updated: 2023-10-11T08:11:08Z
doi: 10.1364/oe.395545
extern: '1'
intvolume: ' 28'
issue: '13'
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: Shallow-etched thin-film lithium niobate waveguides for highly-efficient second-harmonic
generation
type: journal_article
user_id: '22501'
volume: 28
year: '2020'
...