Spectral characterization and calibration of AOTF spectrometers and hyper-spectral imaging system

Jaka Katrašnik; Franjo Pernuš; Boštjan Likar

doi:10.1117/12.840633

23 February 2010 Spectral characterization and calibration of AOTF spectrometers and hyper-spectral imaging system

Jaka Katrašnik, Franjo Pernuš, Boštjan Likar

Proceedings Volume 7556, Design and Quality for Biomedical Technologies III; 75560H (2010) https://doi.org/10.1117/12.840633
Event: SPIE BiOS, 2010, San Francisco, California, United States

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.

Citation Download Citation

Jaka Katrašnik, Franjo Pernuš, and 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); https://doi.org/10.1117/12.840633

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