Stable passively Q-switched Ho:LuAG laser with graphene as a saturable absorber

Zheng Cui; Baoquan Yao; Xiaoming Duan; Yanqiu Du; Sai Xu; Yuezhu Wang

doi:10.1117/1.OE.53.12.126112

19 December 2014 Stable passively Q-switched Ho:LuAG laser with graphene as a saturable absorber

Zheng Cui, Baoquan Yao, Xiaoming Duan, Yanqiu Du, Sai Xu, Yuezhu Wang

Author Affiliations +

Optical Engineering, Vol. 53, Issue 12, 126112 (December 2014). https://doi.org/10.1117/1.OE.53.12.126112

Abstract

We report a continuous wave (CW) Tm:YLF laser-resonantly pumped Ho:LuAG laser in CW mode and passive Q-switched (PQS) mode with multilayer graphene as a saturable absorber. The lasing performance with different output couplers is analyzed. The best result was obtained with −150-mm radius curvature and 10% transmission output coupler. Under the CW mode, Ho:LuAG laser generated a maximum 1.3-W output power at the center wavelength of 2100.65 nm, corresponding to a slope efficiency of 34.6%. In PQS mode, the minimum pulse width observed is 784.7 ns with a center wavelength of 2100.65 nm at the pump power of 5.4 W. Meanwhile, the maximum output power is 0.37 W with a pulse repetition frequency of 47.3 kHz. The results show that the multilayer graphene can be used as a saturable absorber in a Ho³⁺-doped laser around a 2-μm wavelength.

Citation Download Citation

Zheng Cui, Baoquan Yao, Xiaoming Duan, Yanqiu Du, Sai Xu, and Yuezhu Wang "Stable passively Q-switched Ho:LuAG laser with graphene as a saturable absorber," Optical Engineering 53(12), 126112 (19 December 2014). https://doi.org/10.1117/1.OE.53.12.126112

Published: 19 December 2014

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