Optimizing a sub-wavelength grating lens for large incidence angles

Lukas Elsinger, Peter Hadley, Rainer Minixhofer, Anderson Singulani

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

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.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume9556
ISBN (Print)9781628417227
DOIs
Publication statusPublished - 2015
EventNanoengineering: Fabrication, Properties, Optics, and Devices XII - San Diego, United States
Duration: 11 Aug 201512 Aug 2015

Conference

ConferenceNanoengineering: Fabrication, Properties, Optics, and Devices XII
CountryUnited States
CitySan Diego
Period11/08/1512/08/15

Fingerprint

Gratings
Lens
Lenses
Incidence
incidence
lenses
gratings
Wavelength
Angle
wavelengths
Lens Design
lens design
Infrared Sensor
Finite-difference Time-domain (FDTD)
defocusing
Transmittance
Broadband
transmittance
finite element method
Finite Element Method

Keywords

  • IR Imaging
  • Sub-wavelength Grating Lens

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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 (Vol. 9556). [95560O] SPIE. https://doi.org/10.1117/12.2187784

Optimizing a sub-wavelength grating lens for large incidence angles. / Elsinger, Lukas; Hadley, Peter; Minixhofer, Rainer; Singulani, Anderson.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9556 SPIE, 2015. 95560O.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

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. vol. 9556, 95560O, SPIE, Nanoengineering: Fabrication, Properties, Optics, and Devices XII, San Diego, United States, 11/08/15. https://doi.org/10.1117/12.2187784
Elsinger L, Hadley P, Minixhofer R, Singulani A. Optimizing a sub-wavelength grating lens for large incidence angles. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9556. SPIE. 2015. 95560O https://doi.org/10.1117/12.2187784
Elsinger, Lukas ; Hadley, Peter ; Minixhofer, Rainer ; Singulani, Anderson. / Optimizing a sub-wavelength grating lens for large incidence angles. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9556 SPIE, 2015.
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