Infrared and Laser Engineering, Volume. 46, Issue 12, 1205002(2017)
Laser source used for measurement absolute spectral responsivity of long-wave infrared detectors
In order to measure the absolute spectral responsivity of long-wave infrared detectors with high accuracy, improve the long-wave infrared laser power stability and beam quality, a set of long-wave infrared laser source was developed. In this laser source, a feedback-control system, based on the electro-optics effect of CdTe crystal, was designed to improve the stability of long-wave infrared laser power and a long-wave infrared spatial filter, based on the propagation properties of laser beam, was designed to improve the long-wave infrared laser beam quality. The parameters of the spatial filter were also analyzed in this paper. Experimental result shows the laser power stability is elevated to above 0.1% and laser beam quality is improved obviously. The reliable laser source is provided to measure absolute spectral responsivity of long-wave infrared detectors with high-accuracy.
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Chen Haidong, Zhao Kun, Shi Xueshun, Liu Changming, Liu Yulong, Liu Hongbo. Laser source used for measurement absolute spectral responsivity of long-wave infrared detectors[J]. Infrared and Laser Engineering, 2017, 46(12): 1205002
Category: 激光器技术
Received: Apr. 5, 2017
Accepted: May. 3, 2017
Published Online: Jan. 19, 2018
The Author Email: Haidong Chen (haidong4523918@126.com)