Prof. Nan Zong Profile

Prof. Nan Zong

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Proceedings Article | 2 December 2020 Paper

Research on optically pumped vertical-external-cavity-surface-emitting-semiconductor laser at 1178 nm

Hao-Da Ma, Qing-Shuang Zong, Qi Bian, Huayu Liu, Nan Zong, Yong Bo, Qin-Jun Peng

Proceedings Volume 11717, 117172A (2020) https://doi.org/10.1117/12.2587262

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A compact optically pumped vertical-external-cavity surface-emitting-semiconductor laser (OP-VECSEL) at 1178 nm for μs pulsed operation is reported for the first time. The laser employed a V-shaped resonator with the cavity length of 300 mm, pumped by a 200 μs pulse 808 nm laser operating at a repetition rate of 1 kHz. The maximum output power about 0.78W was obtained at pump power of ~5.9 W. The corresponding conversion efficiency from absorbed pump power to 1178 nm was 13.2%. Further, by the intra-cavity frequency doubling of the VECSEL, a μs pulsed 589 nm laser has broad prospects in the application of sodium guide stars.

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