Tuesday, April 30, 2013

1304.7447 (Sijing Chen et al.)

Time-of-flight laser ranging and imaging at 1550 nm using low-jitter
superconducting nanowire single-photon detection system

Sijing Chen, Dengkuan Liu, Wenxing Zhang, Lixing You, Yuhao He, Weijun Zhang, Xiaoyan Yang, Guang Wu, Min Ren, Heping Zeng, Zhen Wang, Xiaoming Xie, Mianheng Jiang
We developed a time-correlated single-photon counting (TCSPC) system based on the low-jitter superconducting nanowire single-photon detection (SNSPD) technology. The causes of jitters in the TCSPC system were analyzed. Owing to the low jitter of the SNSPD technology, a system jitter of 26.8 ps full-width at half-maximum was achieved after optimizing the system. We demonstrated time-of-flight laser ranging at 1550 nm wavelength at a stand-off distance of 115 m, based on this TCSPC system. A depth resolution of 4 mm was achieved directly by locating the centroids of each of the two return signals. Laser imaging was also performed using the TCSPC system. This low-jitter TCSPC system using the SNSPD technology presents great potential in long-range measurements and imaging applications for low-energy-level and eye-safe laser systems
View original: http://arxiv.org/abs/1304.7447

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