Polarization-independent optical spatial differentiation with a doubly-resonant one-dimensional guided-mode grating

Ali Akbar Darki; Søren Peder Madsen; Aurelien Romain Dantan

doi:10.1364/OE.450981

Polarization-independent optical spatial differentiation with a doubly-resonant one-dimensional guided-mode grating

Ali Akbar Darki, Søren Peder Madsen, Aurelien Romain Dantan^*

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

Abstract

We report on the design and experimental characterization of a suspended silicon nitride subwavelength grating possessing a polarization-independent guided-mode resonance at oblique incidence. At this resonant wavelength we observe that the transverse intensity profile of the transmitted beam is consistent with a first-order spatial differentiation of the incident beam profile in the direction of the grating periodicity, regardless of the incident light polarization. These observations are corroborated by full numerical simulations. The simple one-dimensional and symmetric design, combined with the thinness and excellent mechanical properties of these essentially loss-free dieletric films, is attractive for applications in optical processing, sensing and optomechanics.

Original language	English
Journal	Optics Express
Volume	30
Issue	3
Pages (from-to)	3962-3972
Number of pages	11
ISSN	1094-4087
DOIs	https://doi.org/10.1364/OE.450981
Publication status	Published - 31 Jan 2022

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1 Ph.D. thesis

Nanostructured trampolines for photonics and sensing
Darki, A. A., Feb 2023, Århus Universitet. 145 p.
Research output: Book/anthology/dissertation/report › Ph.D. thesis

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abstract = "We report on the design and experimental characterization of a suspended silicon nitride subwavelength grating possessing a polarization-independent guided-mode resonance at oblique incidence. At this resonant wavelength we observe that the transverse intensity profile of the transmitted beam is consistent with a first-order spatial differentiation of the incident beam profile in the direction of the grating periodicity, regardless of the incident light polarization. These observations are corroborated by full numerical simulations. The simple one-dimensional and symmetric design, combined with the thinness and excellent mechanical properties of these essentially loss-free dieletric films, is attractive for applications in optical processing, sensing and optomechanics.",

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Polarization-independent optical spatial differentiation with a doubly-resonant one-dimensional guided-mode grating. / Darki, Ali Akbar; Madsen, Søren Peder ; Dantan, Aurelien Romain.
In: Optics Express, Vol. 30, No. 3, 31.01.2022, p. 3962-3972.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - Polarization-independent optical spatial differentiation with a doubly-resonant one-dimensional guided-mode grating

AU - Darki, Ali Akbar

AU - Madsen, Søren Peder

AU - Dantan, Aurelien Romain

PY - 2022/1/31

Y1 - 2022/1/31

N2 - We report on the design and experimental characterization of a suspended silicon nitride subwavelength grating possessing a polarization-independent guided-mode resonance at oblique incidence. At this resonant wavelength we observe that the transverse intensity profile of the transmitted beam is consistent with a first-order spatial differentiation of the incident beam profile in the direction of the grating periodicity, regardless of the incident light polarization. These observations are corroborated by full numerical simulations. The simple one-dimensional and symmetric design, combined with the thinness and excellent mechanical properties of these essentially loss-free dieletric films, is attractive for applications in optical processing, sensing and optomechanics.

AB - We report on the design and experimental characterization of a suspended silicon nitride subwavelength grating possessing a polarization-independent guided-mode resonance at oblique incidence. At this resonant wavelength we observe that the transverse intensity profile of the transmitted beam is consistent with a first-order spatial differentiation of the incident beam profile in the direction of the grating periodicity, regardless of the incident light polarization. These observations are corroborated by full numerical simulations. The simple one-dimensional and symmetric design, combined with the thinness and excellent mechanical properties of these essentially loss-free dieletric films, is attractive for applications in optical processing, sensing and optomechanics.

U2 - 10.1364/OE.450981

DO - 10.1364/OE.450981

M3 - Journal article

C2 - 35209644

SN - 1094-4087

VL - 30

SP - 3962

EP - 3972

JO - Optics Express

JF - Optics Express

IS - 3

ER -

Polarization-independent optical spatial differentiation with a doubly-resonant one-dimensional guided-mode grating

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Nanostructured trampolines for photonics and sensing

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