Laser & Optoelectronics Progress, Volume. 60, Issue 1, 0114006(2023)
Passively Q-Switched Operation of Tm∶YAP Laser with Black Phosphorus Saturable Absorber
A passively Q-switched (PQS) Tm∶YAP laser in the 2 μm waveband is introduced. A linear cavity structure of the Tm∶YAP laser is chosen in the experiment. A laser diode with an output central wavelength of 792 nm is used as the pump source, and a saturable absorber prepared by a new two-dimensional material of black phosphorus is used as a PQS modulation device for the Tm∶YAP laser. In the continuous wave mode, an output power of 1.0 W is obtained with an output central wavelength of 1994.8 nm from the Tm∶YAP laser under the pump power of 8.8 W, corresponding to a slope efficiency of 17.3%. Under the PQS regime, an average output power of 0.9 W and a minimum pulse width of 1.3 µs at 135.8 kHz are acquired from the Tm∶YAP laser at 1986.7 nm under the pump power of 8.8 W, corresponding to a slope efficiency of 14.2%. In addition, the beam quality factor of
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Bangzheng Liu, Shuangcheng Li, Zhengyang Wu, Xining Yang, Linjun Li, Haoyu Cui. Passively Q-Switched Operation of Tm∶YAP Laser with Black Phosphorus Saturable Absorber[J]. Laser & Optoelectronics Progress, 2023, 60(1): 0114006
Category: Lasers and Laser Optics
Received: Nov. 11, 2021
Accepted: Dec. 13, 2021
Published Online: Dec. 9, 2022
The Author Email: Yang Xining (yangxn1984@126.com), Li Linjun (llj7897@126.com)