Laser & Optoelectronics Progress, Volume. 58, Issue 10, 1011023(2021)
Solar-Blind Ultraviolet Single-Photon Imaging
In this study, a solar-blind ultraviolet single-photon imaging system was developed. The laser three-dimensional imaging was realized within a distance of 0--400 m with 22-mm imaging precision by combining the single-photon detector with Geiger-mode Si avalanche photodiode (Si APD) and the time-correlated single-photon counting technique. In the experiment, a 266-nm pulsed laser source was used, which is in the solar-blind band. Due to the atmospheric absorption, there is no background light noise at 266-nm wavelength on the surface of the Earth. This significantly improves the antibackground noise ability of the single-photon imaging system. Thus, this system can be operated on a sunny day to realize all-day single-photon imaging within a middle-long distance.
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Zhaohui Li, Guangyue Shen, Chengkai Pang, Guang Wu. Solar-Blind Ultraviolet Single-Photon Imaging[J]. Laser & Optoelectronics Progress, 2021, 58(10): 1011023
Category: Imaging Systems
Received: Jan. 26, 2021
Accepted: Mar. 3, 2021
Published Online: May. 28, 2021
The Author Email: Wu Guang (gwu@phy.ecnu.edu.cn)