Ultra-high sensitivity photodetector arrays with integrated amplification and passivation nano-layers

Jie Yao; Irina A. Mokina; Feng Liu; Sean Wang; Jack Zhou; Michael Lange; Weiguo Yang; Patrick Gardner; Leora Peltz; Robert Frampton; Jeffrey H. Hunt

doi:10.1117/12.841146

25 February 2010 Ultra-high sensitivity photodetector arrays with integrated amplification and passivation nano-layers

Jie Yao, Irina A. Mokina, Feng Liu, Sean Wang, Jack Zhou, Michael Lange, Weiguo Yang, Patrick Gardner, Leora Peltz, Robert Frampton, Jeffrey H. Hunt

Author Affiliations +

Proceedings Volume 7598, Optical Components and Materials VII; 759812 (2010) https://doi.org/10.1117/12.841146
Event: SPIE OPTO, 2010, San Francisco, California, United States

Abstract

Miniaturized field-deployable spectrometers used for the rapid analysis of chemical and biological substances require high-sensitivity photo detectors. For example, in a Raman spectroscopy system, the receiver must be capable of high-gain, low-noise detection performance due to the intrinsically weak signals produced by the Raman effects of most substances. We are developing a novel, high-gain hetero-junction phototransistor (HPT) detector which employs two nano-structures simultaneously to achieve 100 times higher sensitivity than InGaAs avalanche photodiodes, the most sensitive commercially available photo-detector in the near infrared (NIR) wavelength range, under their normal operation conditions. Integrated into a detector array, this technology has application for Laser-Induced Breakdown Spectroscopy (LIBS), pollution monitoring, pharmaceutical manufacturing by reaction monitoring, chemical & biological transportation safety, and bio-chemical analysis in planetary exploration.

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Jie Yao, Irina A. Mokina, Feng Liu, Sean Wang, Jack Zhou, Michael Lange, Weiguo Yang, Patrick Gardner, Leora Peltz, Robert Frampton, and Jeffrey H. Hunt "Ultra-high sensitivity photodetector arrays with integrated amplification and passivation nano-layers", Proc. SPIE 7598, Optical Components and Materials VII, 759812 (25 February 2010); https://doi.org/10.1117/12.841146

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