---
_id: '8634'
abstract:
- lang: eng
  text: "A rectangular dielectric strip at some distance above an optical slab waveguide
    is\r\nbeing considered, for evanescent excitation of the strip through the semi-guided
    waves supported\r\nby the slab, at specific oblique angles. The 2.5-D configuration
    shows resonant transmission\r\nproperties with respect to variations of the angle
    of incidence, or of the excitation frequency,\r\nrespectively. The strength of
    the interaction can be controlled by the gap between strip and slab.\r\nFor increasing
    distance, our simulations predict resonant states with unit extremal reflectance\r\nof
    an angular or spectral width that tends to zero, i.e. resonances with a Q-factor
    that tends\r\nto infinity, while the resonance position approaches the level of
    the guided mode of the strip.\r\nThis exceptionally simple system realizes what
    might be termed a “bound state coupled to the\r\ncontinuum”."
article_type: original
author:
- first_name: Manfred
  full_name: Hammer, Manfred
  id: '48077'
  last_name: Hammer
  orcid: 0000-0002-6331-9348
- first_name: Lena
  full_name: Ebers, Lena
  id: '40428'
  last_name: Ebers
- first_name: Jens
  full_name: Förstner, Jens
  id: '158'
  last_name: Förstner
  orcid: 0000-0001-7059-9862
citation:
  ama: 'Hammer M, Ebers L, Förstner J. Oblique evanescent excitation of a dielectric
    strip: A model resonator with an open optical cavity of unlimited Q. <i>Optics
    Express</i>. 2019;27(7):8. doi:<a href="https://doi.org/10.1364/OE.27.009313">10.1364/OE.27.009313</a>'
  apa: 'Hammer, M., Ebers, L., &#38; Förstner, J. (2019). Oblique evanescent excitation
    of a dielectric strip: A model resonator with an open optical cavity of unlimited
    Q. <i>Optics Express</i>, <i>27</i>(7), 8. <a href="https://doi.org/10.1364/OE.27.009313">https://doi.org/10.1364/OE.27.009313</a>'
  bibtex: '@article{Hammer_Ebers_Förstner_2019, title={Oblique evanescent excitation
    of a dielectric strip: A model resonator with an open optical cavity of unlimited
    Q}, volume={27}, DOI={<a href="https://doi.org/10.1364/OE.27.009313">10.1364/OE.27.009313</a>},
    number={7}, journal={Optics Express}, author={Hammer, Manfred and Ebers, Lena
    and Förstner, Jens}, year={2019}, pages={8} }'
  chicago: 'Hammer, Manfred, Lena Ebers, and Jens Förstner. “Oblique Evanescent Excitation
    of a Dielectric Strip: A Model Resonator with an Open Optical Cavity of Unlimited
    Q.” <i>Optics Express</i> 27, no. 7 (2019): 8. <a href="https://doi.org/10.1364/OE.27.009313">https://doi.org/10.1364/OE.27.009313</a>.'
  ieee: 'M. Hammer, L. Ebers, and J. Förstner, “Oblique evanescent excitation of a
    dielectric strip: A model resonator with an open optical cavity of unlimited Q,”
    <i>Optics Express</i>, vol. 27, no. 7, p. 8, 2019, doi: <a href="https://doi.org/10.1364/OE.27.009313">10.1364/OE.27.009313</a>.'
  mla: 'Hammer, Manfred, et al. “Oblique Evanescent Excitation of a Dielectric Strip:
    A Model Resonator with an Open Optical Cavity of Unlimited Q.” <i>Optics Express</i>,
    vol. 27, no. 7, 2019, p. 8, doi:<a href="https://doi.org/10.1364/OE.27.009313">10.1364/OE.27.009313</a>.'
  short: M. Hammer, L. Ebers, J. Förstner, Optics Express 27 (2019) 8.
date_created: 2019-03-26T10:39:00Z
date_updated: 2023-01-03T10:34:29Z
ddc:
- '600'
department:
- _id: '61'
doi: 10.1364/OE.27.009313
file:
- access_level: closed
  content_type: application/pdf
  creator: nprante
  date_created: 2019-03-27T13:47:50Z
  date_updated: 2019-03-27T13:47:50Z
  file_id: '8714'
  file_name: oe-27-7-9313.pdf
  file_size: 2388537
  relation: main_file
  success: 1
file_date_updated: 2019-03-27T13:47:50Z
has_accepted_license: '1'
intvolume: '        27'
issue: '7'
keyword:
- tet_topic_waveguides
language:
- iso: eng
page: '8'
publication: Optics Express
status: public
title: 'Oblique evanescent excitation of a dielectric strip: A model resonator with
  an open optical cavity of unlimited Q'
type: journal_article
user_id: '158'
volume: 27
year: '2019'
...