Nonlinear self-calibrated spectrometer with single GeSe-InSe heterojunction device.

Darweesh, Rana; Yadav, Rajesh Kumar; Adler, Elior; Poplinger, Michal; Levi, Adi; Lee, Jea-Jung; Leshem, Amir; Ramasubramaniam, Ashwin; Xia, Fengnian; Naveh, Doron

Darweesh, Rana; Yadav, Rajesh Kumar; Adler, Elior; Poplinger, Michal; Levi, Adi; Lee, Jea-Jung; Leshem, Amir; Ramasubramaniam, Ashwin; Xia, Fengnian; Naveh, Doron.

Afiliación

Darweesh R; Faculty of Engineering, Bar-Ilan University, 52900 Ramat-Gan, Israel.
Yadav RK; Institue of Nanotechnology and Advanced Materials, Bar-Ilan University, 52900 Ramat-Gan, Israel.
Adler E; Faculty of Engineering, Bar-Ilan University, 52900 Ramat-Gan, Israel.
Poplinger M; Institue of Nanotechnology and Advanced Materials, Bar-Ilan University, 52900 Ramat-Gan, Israel.
Levi A; Faculty of Engineering, Bar-Ilan University, 52900 Ramat-Gan, Israel.
Lee JJ; Institue of Nanotechnology and Advanced Materials, Bar-Ilan University, 52900 Ramat-Gan, Israel.
Leshem A; Faculty of Engineering, Bar-Ilan University, 52900 Ramat-Gan, Israel.
Ramasubramaniam A; Institue of Nanotechnology and Advanced Materials, Bar-Ilan University, 52900 Ramat-Gan, Israel.
Xia F; Faculty of Engineering, Bar-Ilan University, 52900 Ramat-Gan, Israel.
Naveh D; Institue of Nanotechnology and Advanced Materials, Bar-Ilan University, 52900 Ramat-Gan, Israel.

Sci Adv ; 10(20): eadn6028, 2024 May 17.

Article en En | MEDLINE | ID: mdl-38758797

ABSTRACT

ABSTRACT

Computational spectrometry is an emerging field that uses photodetection in conjunction with numerical algorithms for spectroscopic measurements. Compact single photodetectors made from layered materials are particularly attractive since they eliminate the need for bulky mechanical and optical components used in traditional spectrometers and can easily be engineered as heterostructures to optimize device performance. However, such photodetectors are typically nonlinear devices, which adds complexity to extracting optical spectra from their response. Here, we train an artificial neural network to recover the full nonlinear spectral photoresponse of a single GeSe-InSe p-n heterojunction device. The device has a spectral range of 400 to 1100 nm, a small footprint of ~25 × 25 square micrometers, and a mean reconstruction error of 2 × 10-4 for the power spectrum at 0.35 nanometers. Using our device, we demonstrate a solution to metamerism, an apparent matching of colors with different power spectral distributions, which is a fundamental problem in optical imaging.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Adv Año: 2024 Tipo del documento: Article País de afiliación: Israel Pais de publicación: Estados Unidos

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