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Optical Engineering

Stable passively Q-switched Ho:LuAG laser with graphene as a saturable absorber
Author(s): Zheng Cui; Baoquan Yao; Xiaoming Duan; Yanqiu Du; Sai Xu; Yuezhu Wang
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Paper 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.

Paper Details

Date Published: 19 December 2014
PDF: 5 pages
Opt. Eng. 53(12) 126112 doi: 10.1117/1.OE.53.12.126112
Published in: Optical Engineering Volume 53, Issue 12
Show Author Affiliations
Zheng Cui, Harbin Institute of Technology (China)
Baoquan Yao, Harbin Institute of Technology (China)
Xiaoming Duan, Harbin Institute of Technology (China)
Yanqiu Du, Harbin Institute of Technology (China)
Sai Xu, Harbin Institute of Technology (China)
Yuezhu Wang, Harbin Institute of Technology (China)

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