Optical spatial differentiation with ultrathin freestanding subwavelength gratings

Ali A. Darki; Aurélien Dantan; Jens V. Nygaard; Søren P. Madsen; Alexios Parthenopoulos; Christian Toft-Vandborg; Christian  Vandborg

doi:10.1117/12.2621186

Optical spatial differentiation with ultrathin freestanding subwavelength gratings

Ali A. Darki^*, Aurélien Dantan, Jens V. Nygaard, Søren P. Madsen, Alexios Parthenopoulos, Christian Toft-Vandborg, Christian Vandborg

^*Corresponding author af dette arbejde

Publikation: Bidrag til bog/antologi/rapport/proceeding › Konferencebidrag i proceedings › Forskning › peer review

Abstract

We investigate spatial differentiation of optical beams using guided mode resonances in suspended dielectric one-dimensional photonic crystals. Various SiN grating structures are characterized under various incidence, polarization and beam size illuminations. We first observe first- and second-order spatial differentiation in transmission of Gaussian beams impinging at oblique and normal incidence, respectively, on gratings designed to be resonant for either TE- or TM-polarized incident light. Polarization-independent first-order spatial differentiation is then demonstrated with a specifically designed, doubly-resonant, one-dimensional and symmetric grating structure. Such ultrathin and essentially lossfree nanostructured dielectric films are promising for various optical processing, optomechanics and sensing applications.

Originalsprog	Engelsk
Titel	Optics, Photonics and Digital Technologies for Imaging Applications VII
Redaktører	Peter Schelkens, Tomasz Kozacki
Forlag	SPIE - International Society for Optical Engineering
Publikationsdato	maj 2022
Artikelnummer	121380D
ISBN (Elektronisk)	9781510651524
DOI	https://doi.org/10.1117/12.2621186
Status	Udgivet - maj 2022
Begivenhed	Optics, Photonics and Digital Technologies for Imaging Applications VII 2022 - Virtual, Online Varighed: 9 maj 2022 → 15 maj 2022

Konference

Konference	Optics, Photonics and Digital Technologies for Imaging Applications VII 2022
By	Virtual, Online
Periode	09/05/2022 → 15/05/2022

Navn	Proceedings of SPIE
Vol/bind	12138
ISSN	0277-786X

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1 Ph.d.-afhandling

Nanostructured trampolines for photonics and sensing
Darki, A. A., feb. 2023, Århus Universitet. 145 s.
Publikation: Typer af afhandling › Ph.d.-afhandling

Fil

Citationsformater

Darki, A. A., Dantan, A., Nygaard, J. V., Madsen, S. P., Parthenopoulos, A., Toft-Vandborg, C., & Vandborg, C. (2022). Optical spatial differentiation with ultrathin freestanding subwavelength gratings. I P. Schelkens, & T. Kozacki (red.), Optics, Photonics and Digital Technologies for Imaging Applications VII Artikel 121380D SPIE - International Society for Optical Engineering. https://doi.org/10.1117/12.2621186

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title = "Optical spatial differentiation with ultrathin freestanding subwavelength gratings",

abstract = "We investigate spatial differentiation of optical beams using guided mode resonances in suspended dielectric one-dimensional photonic crystals. Various SiN grating structures are characterized under various incidence, polarization and beam size illuminations. We first observe first- and second-order spatial differentiation in transmission of Gaussian beams impinging at oblique and normal incidence, respectively, on gratings designed to be resonant for either TE- or TM-polarized incident light. Polarization-independent first-order spatial differentiation is then demonstrated with a specifically designed, doubly-resonant, one-dimensional and symmetric grating structure. Such ultrathin and essentially lossfree nanostructured dielectric films are promising for various optical processing, optomechanics and sensing applications.",

keywords = "Optical spatial differentiation, photonic crystal, subwavelength grating",

author = "Darki, {Ali A.} and Aur{\'e}lien Dantan and Nygaard, {Jens V.} and Madsen, {S{\o}ren P.} and Alexios Parthenopoulos and Christian Toft-Vandborg and Christian Vandborg",

note = "Publisher Copyright: {\textcopyright} 2022 SPIE.; Optics, Photonics and Digital Technologies for Imaging Applications VII 2022 ; Conference date: 09-05-2022 Through 15-05-2022",

year = "2022",

month = may,

doi = "10.1117/12.2621186",

language = "English",

series = "Proceedings of SPIE ",

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Darki, AA, Dantan, A , Nygaard, JV , Madsen, SP, Parthenopoulos, A, Toft-Vandborg, C & Vandborg, C 2022, Optical spatial differentiation with ultrathin freestanding subwavelength gratings. i P Schelkens & T Kozacki (red), Optics, Photonics and Digital Technologies for Imaging Applications VII., 121380D, SPIE - International Society for Optical Engineering, Proceedings of SPIE , bind 12138, Optics, Photonics and Digital Technologies for Imaging Applications VII 2022, Virtual, Online, 09/05/2022. https://doi.org/10.1117/12.2621186

Optical spatial differentiation with ultrathin freestanding subwavelength gratings. / Darki, Ali A.; Dantan, Aurélien ; Nygaard, Jens V. et al.
Optics, Photonics and Digital Technologies for Imaging Applications VII. red. / Peter Schelkens; Tomasz Kozacki. SPIE - International Society for Optical Engineering, 2022. 121380D (Proceedings of SPIE , Bind 12138).

Publikation: Bidrag til bog/antologi/rapport/proceeding › Konferencebidrag i proceedings › Forskning › peer review

TY - GEN

T1 - Optical spatial differentiation with ultrathin freestanding subwavelength gratings

AU - Darki, Ali A.

AU - Dantan, Aurélien

AU - Nygaard, Jens V.

AU - Madsen, Søren P.

AU - Parthenopoulos, Alexios

AU - Toft-Vandborg, Christian

AU - Vandborg, Christian

PY - 2022/5

Y1 - 2022/5

N2 - We investigate spatial differentiation of optical beams using guided mode resonances in suspended dielectric one-dimensional photonic crystals. Various SiN grating structures are characterized under various incidence, polarization and beam size illuminations. We first observe first- and second-order spatial differentiation in transmission of Gaussian beams impinging at oblique and normal incidence, respectively, on gratings designed to be resonant for either TE- or TM-polarized incident light. Polarization-independent first-order spatial differentiation is then demonstrated with a specifically designed, doubly-resonant, one-dimensional and symmetric grating structure. Such ultrathin and essentially lossfree nanostructured dielectric films are promising for various optical processing, optomechanics and sensing applications.

AB - We investigate spatial differentiation of optical beams using guided mode resonances in suspended dielectric one-dimensional photonic crystals. Various SiN grating structures are characterized under various incidence, polarization and beam size illuminations. We first observe first- and second-order spatial differentiation in transmission of Gaussian beams impinging at oblique and normal incidence, respectively, on gratings designed to be resonant for either TE- or TM-polarized incident light. Polarization-independent first-order spatial differentiation is then demonstrated with a specifically designed, doubly-resonant, one-dimensional and symmetric grating structure. Such ultrathin and essentially lossfree nanostructured dielectric films are promising for various optical processing, optomechanics and sensing applications.

KW - Optical spatial differentiation

KW - photonic crystal

KW - subwavelength grating

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M3 - Article in proceedings

AN - SCOPUS:85133011971

T3 - Proceedings of SPIE

BT - Optics, Photonics and Digital Technologies for Imaging Applications VII

A2 - Schelkens, Peter

A2 - Kozacki, Tomasz

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Darki AA, Dantan A , Nygaard JV , Madsen SP, Parthenopoulos A, Toft-Vandborg C et al. Optical spatial differentiation with ultrathin freestanding subwavelength gratings. I Schelkens P, Kozacki T, red., Optics, Photonics and Digital Technologies for Imaging Applications VII. SPIE - International Society for Optical Engineering. 2022. 121380D. (Proceedings of SPIE , Bind 12138). doi: 10.1117/12.2621186

Optical spatial differentiation with ultrathin freestanding subwavelength gratings

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Nanostructured trampolines for photonics and sensing

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