Infrared and Laser Engineering, Volume. 47, Issue 10, 1005002(2018)
LD pumped kHz Er3+, Yb3+:glass passively Q-switched microchip lasers
At present, 1.5 μm LD pumped Er-glass passively Q-switched micro-laser is a popular research direction in military laser ranging. Achieving high repetition rate and single pulse energy are very important indicators. In this paper, a kHz erbium-ytterbium co-doped phosphate glass passively Q-switched microchip laser for laser ranging was reported. The laser was pumped by a single diode with a center wavelength of 940 nm and erbium-ytterbium co-doped phosphate glass(Er3+,Yb3+:glass) as the gain medium, CO2+:MgAl2O4(CO:MALO) as the saturable absorber. By analyzing the influence of the pump spot radius on the mode-matching, the pump spot radius was optimized. The effects of the initial transmittance(T0) of saturable absorber and the reflectance R of output mirror on the output laser parameters were experimentally analyzed. In the final pre-pumping experiment, a Q-switched pulse was achieved, with repetition frequency of 1 kHz, wavelength of 1 535 nm, single pulse energy of 40 μJ, pulse width of 5.09 ns, peak power of 7.89 kW and beam quality of 1.4.
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Guo Na, Hui Yongling, Cai Jinlu, Jiang Menghua, Lei Hong, Li Qiang. LD pumped kHz Er3+, Yb3+:glass passively Q-switched microchip lasers[J]. Infrared and Laser Engineering, 2018, 47(10): 1005002
Category: 激光器技术
Received: May. 10, 2018
Accepted: Jun. 20, 2018
Published Online: Nov. 25, 2018
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