Acta Optica Sinica, Volume. 41, Issue 12, 1214001(2021)
Passively Q-Switched Pulse Laser with Large Core Size Crystal Waveguide Near Diffraction-Limit Beam Quality Output
The output characteristics of a passively Q-switched pulse laser with a large core size crystal waveguide are studied experimentally. Using Yb∶YAG with core size of 320 μm×400 μm and an atomic number fraction of 1%, Er∶YAG with cladding size of 7 mm×30 mm and an atomic number fraction of 0.5%, a single-clad rectangular crystal waveguide with a length of 77 mm, and a Cr 4+∶YAG saturable absorption crystal with initial transmittance of 85%, a passively Q-switched pulse energy of 0.84 mJ@8.7 kHz, a pulse width of 23.8 ns, and a beam quality of M2=1.12×1.06 is obtained. Experimental results show that the high peak power pulse output with near diffraction-limit can be obtained by passively Q-switched pulse laser with large core diameter crystal waveguide.
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Hong Lei, Qi Liu, Yu Wang, Yongling Hui, Zhanda Zhu, Qiang Li. Passively Q-Switched Pulse Laser with Large Core Size Crystal Waveguide Near Diffraction-Limit Beam Quality Output[J]. Acta Optica Sinica, 2021, 41(12): 1214001
Category: Lasers and Laser Optics
Received: Oct. 22, 2020
Accepted: Jan. 18, 2021
Published Online: Jun. 2, 2021
The Author Email: Liu Qi (liuqi97966@163.com), Li Qiang (ncltlq@bjut.edu.cn)