Optics-free ultrathin-film spectrometers based on GaN light absorbers

Juhyeon Kim; Srinivasa Cheekati; Tuba Sarwar; Pei-Cheng Ku

doi:10.1117/12.2578585

5 March 2021 Optics-free ultrathin-film spectrometers based on GaN light absorbers

Juhyeon Kim, Srinivasa Cheekati, Tuba Sarwar, Pei-Cheng Ku

Proceedings Volume 11686, Gallium Nitride Materials and Devices XVI; 116862O (2021) https://doi.org/10.1117/12.2578585
Event: SPIE OPTO, 2021, Online Only

Conference Poster

Abstract

An optics-free spectrometer is demonstrated based on InGaN semiconductor photodiodes. The design is insensitive to the incident angle of light and delivers decent light absorption across the visible spectrum. In combination with compressive sensing algorithms, a high-performance spectrometer suitable for portable applications as well as sensing in harsh environments is shown.

Conference Presentation

Citation Download Citation

Juhyeon Kim, Srinivasa Cheekati, Tuba Sarwar, and Pei-Cheng Ku "Optics-free ultrathin-film spectrometers based on GaN light absorbers", Proc. SPIE 11686, Gallium Nitride Materials and Devices XVI, 116862O (5 March 2021); https://doi.org/10.1117/12.2578585

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