Angle Tolerant Mid-Infrared Notch Filters using Two-Dimensional Amorphous Germanium High Index Contrast Sub-Wavelength Gratings

Krishna, ASL and Mere, V and Selvaraja, SK and Raghunathan, V (2020) Angle Tolerant Mid-Infrared Notch Filters using Two-Dimensional Amorphous Germanium High Index Contrast Sub-Wavelength Gratings. In: Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS, 10-15 May 2020, San Jose; United States.

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Abstract

We experimentally demonstrated polarization independent, angle tolerant mid-infrared notch filters using amorphous-Germanium 2D high contrast gratings. Centered at 7.42 μm wavelength, the filter exhibits wide field-of-view notch filtering characteristics across 0 to 30° incidence angles. © 2020 OSA.

Item Type:	Conference Paper
Publication:	Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright of this article belongs to the IEEE.
Keywords:	Diffraction gratings; Germanium; Infrared devices, Amorphous germanium; High index contrast; High-contrast gratings; Incidence angles; Notch filtering; Polarization independent; Sub-wave length grating; Wide field of view, Notch filters
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	14 Dec 2020 10:28
Last Modified:	11 Dec 2022 05:06
URI:	https://eprints.iisc.ac.in/id/eprint/66841

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