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Proceedings Paper

Comparative performance studies between tunable filter and push-broom chemical imaging systems
Author(s): Jouko Malinen; Heikki Saari; Gabor Kemeny; Zhenqi Shi; Carl Anderson
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Paper 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 MatrixNIRTM is based on a LCTF tunable filter and InGaAs camera and covers wavelengths from 1000 to 1700 nm. The second one SisuCHEMATM 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.

Paper Details

Date Published: 27 April 2010
PDF: 8 pages
Proc. SPIE 7680, Next-Generation Spectroscopic Technologies III, 76800E (27 April 2010); doi: 10.1117/12.850105
Show Author Affiliations
Jouko Malinen, VTT Technical Research Ctr. of Finland (Finland)
Heikki Saari, VTT Technical Research Ctr. of Finland (Finland)
Gabor Kemeny, Middleton Research (United States)
Zhenqi Shi, Duquesne Univ. (United States)
Carl Anderson, Duquesne Univ. (United States)

Published in SPIE Proceedings Vol. 7680:
Next-Generation Spectroscopic Technologies III
Mark A. Druy; Christopher D. Brown; Richard A. Crocombe, Editor(s)

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