High average power six-rod series connection pulsed Nd:YAG laser
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摘要: 报道了一种腔内六棒串接的脉冲Nd:YAG激光器。采用44矩阵对晶体棒失调角度对谐振腔光轴的影响进行了理论分析，给出了六棒串接脉冲激光器中晶体棒失调角度的允许范围。在串接实验中，谐振腔采用对称平平腔结构，通过调整每根晶体棒的失调角度到允许范围内，实现了六棒串接脉冲Nd:YAG激光器。在输入电功率86 kW，占空比17%时，获得了平均功率3 018 W的脉冲激光输出，峰值功率17.75 kW，最高单脉冲能量为66 J，光束参数乘积为26.3 mmmrad，电光转换效率3.5%，长时间工作不稳定性小于2%。Abstract: A six-rod series connection pulsed Nd:YAG laser was presented. 44 matrices were used to theoretically analyze the deviation of optical axis affected by the offset angle of Nd:YAG rods in the resonator, and the tolerance of the offset angle is given. A plane-plane symmetrical resonator has been used in the experiment, and through adjusting the offset angle of all rods within the tolerance, the six-rod series connection pulsed Nd:YAG laser was achieved. With an input electric power of 86 kW and a duty cycle of 17%, an output laser with an average power of 3 018 W, a peak power of 17.75 kW, the maximum single pulse energy of 66 J and a beam parameters product of 26.3 mmmrad was obtained. The electro-optical conversion efficiency was 3.5%, and the instability of the laser was less than 2%.
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Key words:
- pulsed laser /
- nd:yag /
- six-rod series connection resonator /
- lamp pumping
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