Comparative performance studies between tunable filter and push-broom chemical imaging systems

Jouko Malinen; Heikki Saari; Gabor Kemeny; Zhenqi Shi; Carl Anderson

doi:10.1117/12.850105

27 April 2010 Comparative performance studies between tunable filter and push-broom chemical imaging systems

Jouko Malinen, Heikki Saari, Gabor Kemeny, Zhenqi Shi, Carl Anderson

Author Affiliations +

Proceedings Volume 7680, Next-Generation Spectroscopic Technologies III; 76800E (2010) https://doi.org/10.1117/12.850105
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

This paper reports instrument characterization measurements, which were recently arranged to provide comparative information on different hyperspectral chemical imaging systems. Three different instruments were studied covering both tunable filter and push-broom techniques: The first instrument MatrixNIR^TM is based on a LCTF tunable filter and InGaAs camera and covers wavelengths from 1000 to 1700 nm. The second one SisuCHEMA^TM is based on push-broom technology and MCT camera operating from 1000 to 2500 nm. The third system is an instrument prototype from VTT Technical Research Centre of Finland exploiting high speed Fabry-Perot interferometer and MCT camera, currently calibrated from 1260 to 2500 nm. The characterization procedure was designed to study instrumental noise, signal-to-noise ratio, linearity and spectral as well as spatial resolution. Finally, a pharmaceutical tablet sample was measured with each instrument to demonstrate speed of measurement in a typical application. In spite of differences in wavelength ranges and camera technologies used, the results provide interesting information on relative instrumental advantages and disadvantages, which may be useful for selecting appropriate instrumentation for defined applications. Further, an additional aim of this study is to compare the high speed Fabry-Perot imaging technology under development against the established chemical imaging techniques available on the market today.

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Jouko Malinen, Heikki Saari, Gabor Kemeny, Zhenqi Shi, and Carl Anderson "Comparative performance studies between tunable filter and push-broom chemical imaging systems", Proc. SPIE 7680, Next-Generation Spectroscopic Technologies III, 76800E (27 April 2010); https://doi.org/10.1117/12.850105

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