Reconfigurable infrared spectral imaging with phase change materials

Jeong-Sun Moon; Hwa-Chang Seo; K. Kay Son; Eilam Yalon; Kangmu Lee; Elias Flores; Geovanni Candia; Eric Pop

doi:10.1117/12.2519492

13 May 2019 Reconfigurable infrared spectral imaging with phase change materials

Jeong-Sun Moon, Hwa-Chang Seo, K. Kay Son, Eilam Yalon, Kangmu Lee, Elias Flores, Geovanni Candia, Eric Pop

Proceedings Volume 10982, Micro- and Nanotechnology Sensors, Systems, and Applications XI; 109820X (2019) https://doi.org/10.1117/12.2519492
Event: SPIE Defense + Commercial Sensing, 2019, Baltimore, MD, United States

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).

Citation Download Citation

Jeong-Sun Moon, Hwa-Chang Seo, K. Kay Son, Eilam Yalon, Kangmu Lee, Elias Flores, Geovanni Candia, and Eric Pop "Reconfigurable infrared spectral imaging with phase change materials", Proc. SPIE 10982, Micro- and Nanotechnology Sensors, Systems, and Applications XI, 109820X (13 May 2019); https://doi.org/10.1117/12.2519492

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