Mid infrared surface relief photonic devices using high-index contrast amorphous germanium sub-wavelength structures

Lal Krishna, AS and Raghunathan, V (2021) Mid infrared surface relief photonic devices using high-index contrast amorphous germanium sub-wavelength structures. In: 4th IEEE Research and Applications of Photonics in Defense Conference, RAPID 2021, 2-4 Aug 2021.

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Abstract

Strongly index-modulated sub-wavelength grating structures of amorphous-germanium on low index substrates can realize simple, single-layer spectral filters and nonlinear frequency conversion surfaces in the mid-infrared range. This paper reviews some of our work on the electromagnetic design and experiments on amorphous-germanium based surface-relief photonic devices. © 2021 IEEE.

Item Type:	Conference Paper
Publication:	2021 IEEE Research and Applications of Photonics in Defense Conference, RAPID 2021
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Diffraction gratings; Germanium; Harmonic generation; Infrared devices; Infrared radiation, Amorphous germanium; Electromagnetically-induced transparency; High index contrast; Midinfrared; Nonlinear frequency conversion; Photonics devices; Sub-wave length grating; Sub-wavelength structures; Surface reliefs; Third-harmonic generation, Photonic devices
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering > Electrical Communication Engineering - Technical Reports
Date Deposited:	03 Dec 2021 08:39
Last Modified:	03 Dec 2021 08:39
URI:	http://eprints.iisc.ac.in/id/eprint/70256

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