19 November 2012 A laser ranging system operating at 1036 nm with Geiger-mode silicon avalanche photodiode
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Abstract
We demonstrated a laser ranging experiment obtained with a Geiger-mode silicon avalanche photodiode (Si GAPD). The Surface-to-surface resolution of 15 cm was achieved with the technique of time-correlated single-photon counting. In the experiment, a mode-locked Yb-doped fiber laser at 1036 nm was applied, as the detection efficiency at 1036 nm of Si GAPDs is much higher than that at 1064nm which was widely applied in remote sensing. Due to the single-photon detector, the laser ranging system was able to measure the reflected photon pulses at single-photon level. We realized 32- m laser ranging experiment with a 135-mm diameter Newtonian telescope in daylight. And the system could measure the non-cooperated object longer than 11.3 km far away, which was tested through inserting the optical loss. It presented a potential for hundreds-of-kilometer laser ranging at low-light level.
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Guang Wu, Min Ren, Yan Liang, Zhiyuan Wang, Haifeng Pan, Heping Zeng, "A laser ranging system operating at 1036 nm with Geiger-mode silicon avalanche photodiode", Proc. SPIE 8533, Sensors, Systems, and Next-Generation Satellites XVI, 853323 (19 November 2012); doi: 10.1117/12.973726; https://doi.org/10.1117/12.973726
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