Angle Tolerant Mid-Infrared Notch filters using Two-dimensional Amorphous Germanium High Index Contrast Sub-wavelength Gratings

Lal Krishna A S; Viphretuo Mere; Shankar Kumar Selvaraja; Varun Raghunathan

doi:10.1364/CLEO_AT.2020.JW2D.10

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 2020),
paper JW2D.10
•https://doi.org/10.1364/CLEO_AT.2020.JW2D.10

Angle Tolerant Mid-Infrared Notch filters using Two-dimensional Amorphous Germanium High Index Contrast Sub-wavelength Gratings

Lal Krishna A S, Viphretuo Mere, Shankar Kumar Selvaraja, and Varun Raghunathan

CLEO: Science and Innovations 2020

Washington, DC United States
10–15 May 2020
ISBN: 978-1-943580-76-7

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Joint Poster Session 9 (JW2D)

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L. K. A. S, V. Mere, S. K. Selvaraja, and V. Raghunathan, "Angle Tolerant Mid-Infrared Notch filters using Two-dimensional Amorphous Germanium High Index Contrast Sub-wavelength Gratings," in Conference on Lasers and Electro-Optics, OSA Technical Digest (Optica Publishing Group, 2020), paper JW2D.10.

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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 pm wavelength, the filter exhibits wide field-of-view notch filtering characteristics across 0 to 30^o incidence angles.

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