Intracavity Optical Deposition of Graphene Saturable Absorber for Low-Threshold Passive Mode-Locking of a Fiber Laser
LUO Zhi-Chao, CAO Wen-Jun, LUO Ai-Ping** , XU Wen-Cheng**
Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006
Abstract ：A compact, intracavity optical deposition of graphene saturable absorber (SA) for low-threshold passively mode-locked fiber laser is proposed and demonstrated. The optical deposition is implemented in the laser cavity by using a slot collimator. Utilizing the fabricated graphene SA, the fiber laser achieves self-starting, passively mode-locked operation at a low threshold of 32 mW pump power, delivering a 13.1-MHz 2.36-ps pulse train.
收稿日期: 2012-11-29
出版日期: 2013-03-02
:
42.55.Wd
(Fiber lasers)
42.70.Nq
(Other nonlinear optical materials; photorefractive and semiconductor materials)
42.60.Fc
(Modulation, tuning, and mode locking)
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2013, Vol. 30 
