Passively Q-switched Nd:YAG ceramic laser towards large pulse energy and short pulse width |
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| Authors: | R Lan Z Wang H Liu H Yu L Guo L Chen S Zhuang X Xu and J Wang |
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| Institution: | (1) Wuhan National Laboratory for Optoelectronics, College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, People’s Republic of China; |
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| Abstract: | A large pulse energy and high peak power passively Q-switched ceramic neodymium-doped yttrium aluminum garnet (Nd:YAG) laser
has been demonstrated with Cr4+:YAG crystals as the saturable absorbers. By employing a continuous wave (CW) laser-diode (LD) as the pump source, as high
as 11.3 W CW output power of 1064 nm was obtained under the pump power of 21.6 W, with an optical conversion efficiency of
52.3%. Inserting different initial transmissions Cr4+:YAG as saturable absorbers, under the incident pump power of 15.6 W, the largest pulse energy, shortest pulse width, and
highest peak power are measured to be 188 μJ, 3.16 ns, and 59.5 kW, respectively. As we has known, this is the best passively
Q-switched results ever reported by Nd:YAG ceramic material. |
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