Optimizing a sub-wavelength grating lens for large incidence angles

Lukas Elsinger; Peter Hadley; Rainer Minixhofer; Anderson Singulani

doi:10.1117/12.2187784

Optimizing a sub-wavelength grating lens for large incidence angles

Lukas Elsinger^*, Peter Hadley, Rainer Minixhofer, Anderson Singulani

^*Korrespondierende/r Autor/-in für diese Arbeit

Institut für Festkörperphysik (5130)

Publikation: Beitrag in Buch/Bericht/Konferenzband › Beitrag in einem Konferenzband › Begutachtung

Abstract

Flat transmissive lens designs for infrared sensor applications based on sub-wavelength gratings were analyzed using a finite difference time domain program (Lumerical). An initial design for broadband transmission with a design wavelength of 4μm exhibited a drop in the transmittance for large incidence angles that caused defocusing. This was investigated numerically and a phenomenological explanation is presented. The sub- wavelength structure was then optimized to work also for large incidence angles. The focal spot of the proposed lens was characterized using a finite element method package (Comsol). Downloading of the abstract is permitted for personal use only.

Originalsprache	englisch
Titel	Proceedings of SPIE - The International Society for Optical Engineering
Herausgeber (Verlag)	SPIE
Band	9556
ISBN (Print)	9781628417227
DOIs	https://doi.org/10.1117/12.2187784
Publikationsstatus	Veröffentlicht - 2015
Veranstaltung	Nanoengineering: Fabrication, Properties, Optics, and Devices XII - San Diego, USA / Vereinigte Staaten Dauer: 11 Aug. 2015 → 12 Aug. 2015

Konferenz

Konferenz	Nanoengineering: Fabrication, Properties, Optics, and Devices XII
Land/Gebiet	USA / Vereinigte Staaten
Ort	San Diego
Zeitraum	11/08/15 → 12/08/15

ASJC Scopus subject areas

Angewandte Mathematik
Angewandte Informatik
Elektrotechnik und Elektronik
Elektronische, optische und magnetische Materialien
Physik der kondensierten Materie

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10.1117/12.2187784

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Elsinger, L, Hadley, P, Minixhofer, R & Singulani, A 2015, Optimizing a sub-wavelength grating lens for large incidence angles. in Proceedings of SPIE - The International Society for Optical Engineering. Bd. 9556, 95560O, SPIE, Nanoengineering: Fabrication, Properties, Optics, and Devices XII, San Diego, USA / Vereinigte Staaten, 11/08/15. https://doi.org/10.1117/12.2187784

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abstract = "Flat transmissive lens designs for infrared sensor applications based on sub-wavelength gratings were analyzed using a finite difference time domain program (Lumerical). An initial design for broadband transmission with a design wavelength of 4μm exhibited a drop in the transmittance for large incidence angles that caused defocusing. This was investigated numerically and a phenomenological explanation is presented. The sub- wavelength structure was then optimized to work also for large incidence angles. The focal spot of the proposed lens was characterized using a finite element method package (Comsol). Downloading of the abstract is permitted for personal use only.",

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author = "Lukas Elsinger and Peter Hadley and Rainer Minixhofer and Anderson Singulani",

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AU - Hadley, Peter

AU - Minixhofer, Rainer

AU - Singulani, Anderson

PY - 2015

Y1 - 2015

N2 - Flat transmissive lens designs for infrared sensor applications based on sub-wavelength gratings were analyzed using a finite difference time domain program (Lumerical). An initial design for broadband transmission with a design wavelength of 4μm exhibited a drop in the transmittance for large incidence angles that caused defocusing. This was investigated numerically and a phenomenological explanation is presented. The sub- wavelength structure was then optimized to work also for large incidence angles. The focal spot of the proposed lens was characterized using a finite element method package (Comsol). Downloading of the abstract is permitted for personal use only.

AB - Flat transmissive lens designs for infrared sensor applications based on sub-wavelength gratings were analyzed using a finite difference time domain program (Lumerical). An initial design for broadband transmission with a design wavelength of 4μm exhibited a drop in the transmittance for large incidence angles that caused defocusing. This was investigated numerically and a phenomenological explanation is presented. The sub- wavelength structure was then optimized to work also for large incidence angles. The focal spot of the proposed lens was characterized using a finite element method package (Comsol). Downloading of the abstract is permitted for personal use only.

KW - IR Imaging

KW - Sub-wavelength Grating Lens

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U2 - 10.1117/12.2187784

DO - 10.1117/12.2187784

M3 - Conference paper

AN - SCOPUS:84951823667

SN - 9781628417227

VL - 9556

BT - Proceedings of SPIE - The International Society for Optical Engineering

PB - SPIE

T2 - Nanoengineering: Fabrication, Properties, Optics, and Devices XII

Y2 - 11 August 2015 through 12 August 2015

ER -

Optimizing a sub-wavelength grating lens for large incidence angles

Abstract

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ASJC Scopus subject areas

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