23 February 2010 Spectral characterization and calibration of AOTF spectrometers and hyper-spectral imaging system
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Abstract
The goal of this article is to present a novel method for spectral characterization and calibration of spectrometers and hyper-spectral imaging systems based on non-collinear acousto-optical tunable filters. The method characterizes the spectral tuning curve (frequency-wavelength characteristic) of the AOTF (Acousto-Optic Tunable Filter) filter by matching the acquired and modeled spectra of the HgAr calibration lamp, which emits line spectrum that can be well modeled via AOTF transfer function. In this way, not only tuning curve characterization and corresponding spectral calibration but also spectral resolution assessment is performed. The obtained results indicated that the proposed method is efficient, accurate and feasible for routine calibration of AOTF spectrometers and hyper-spectral imaging systems and thereby a highly competitive alternative to the existing calibration methods.
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Jaka Katrašnik, Jaka Katrašnik, Franjo Pernuš, Franjo Pernuš, Boštjan Likar, Boštjan Likar, } "Spectral characterization and calibration of AOTF spectrometers and hyper-spectral imaging system", Proc. SPIE 7556, Design and Quality for Biomedical Technologies III, 75560H (23 February 2010); doi: 10.1117/12.840633; https://doi.org/10.1117/12.840633
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