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Reconfigurable infrared spectral imaging with phase change materials
Author(s): Jeong-Sun Moon; Hwa-Chang Seo; K. Kay Son; Eilam Yalon; Kangmu Lee; Elias Flores; Geovanni Candia; Eric Pop
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Paper Abstract

A spatial light modulator (SLM) is a key device that enables a coded aperture imaging technique to extract spectral signature for remote detection and identification without platform motion. The SLMs offer a way to carry out spectral imaging with reconfigurability, which allows signature detection against a spectrally cluttered background. Liquidcrystal display (LCD) arrays and digital micro-mirror devices (DMDs) are used to implement the spatial light modulators, and there are shortcomings in infrared (IR) applications. Here, we report on a new solid-state SLM modulator device operating in the infrared range with SbTe-based phase change material. The SLM leverages a dramatic change (<2) in refractive index of SbTe phase change material within most of the IR bands, depending on their phase (amorphous versus crystalline).

Paper Details

Date Published: 13 May 2019
PDF: 5 pages
Proc. SPIE 10982, Micro- and Nanotechnology Sensors, Systems, and Applications XI, 109820X (13 May 2019); doi: 10.1117/12.2519492
Show Author Affiliations
Jeong-Sun Moon, HRL Labs., LLC (United States)
Hwa-Chang Seo, HRL Labs., LLC (United States)
K. Kay Son, HRL Labs., LLC (United States)
Eilam Yalon, Stanford Univ. (United States)
Kangmu Lee, HRL Labs., LLC (United States)
Elias Flores, HRL Labs., LLC (United States)
Geovanni Candia, HRL Labs., LLC (United States)
Eric Pop, Stanford Univ. (United States)


Published in SPIE Proceedings Vol. 10982:
Micro- and Nanotechnology Sensors, Systems, and Applications XI
Thomas George; M. Saif Islam, Editor(s)

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