Next generation infrared sensor instrumentation: remote sensing and sensor networks using the openPHOTONS repository

Stephen So; Evan Jeng; Clinton Smith; David Krueger; Gerard Wysocki

doi:10.1117/12.861505

27 August 2010 Next generation infrared sensor instrumentation: remote sensing and sensor networks using the openPHOTONS repository

Stephen So, Evan Jeng, Clinton Smith, David Krueger, Gerard Wysocki

Author Affiliations +

Proceedings Volume 7808, Infrared Remote Sensing and Instrumentation XVIII; 780818 (2010) https://doi.org/10.1117/12.861505
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

We describe our novel instrumentation architectures for infrared laser spectrometers. Compact, power efficient, low noise modules allow for optimized implementation of cell phone sized sensors using VCSELs, diode, and quantum cascade laser sources. These sensors can consume as little as 0.3W with full laser temperature (<0.001K/Hz^1/2) and current control (<2ppm/Hz^1/2 noise), photodiode preamplification (<2pA/Hz^1/2 noise floor, 1MΩ transimpedance), and digital lock-in amplification with 3 independent channels. We have implemented sensors based on laser absorption spectroscopy, photoacoustic spectroscopy, and Faraday rotation spectroscopy using the openPHOTONS systems, with performance rivaling standalone laboratory measurement instrumentation. Additionally, as openPHOTONS is an open source software repository, this instrumentation can be quickly adapted to new optical configurations and applications. Such modules allow the development of flexible sensors, whether implementing closed path spectrometers, open path perimeter monitoring, or remote backscatter based sensors. This work is also the enabling technology for wireless sensor networks (WSN) of precision sensors, a desirable sensing paradigm for long term, wide area, precision, temporally and spatially resolved studies. This approach can complement existing remote sensing and mapping technologies including satellite observations and sparse networks of flux towers.

Citation Download Citation

Stephen So, Evan Jeng, Clinton Smith, David Krueger, and Gerard Wysocki "Next generation infrared sensor instrumentation: remote sensing and sensor networks using the openPHOTONS repository", Proc. SPIE 7808, Infrared Remote Sensing and Instrumentation XVIII, 780818 (27 August 2010); https://doi.org/10.1117/12.861505

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