论文部分内容阅读
报道了输出532 nm平均功率为63 W的灯抽运声光(A-O)调Q腔内KTP倍频Nd∶YAG固体激光器。分析双灯抽运金属镀金腔结构、抽运均匀性以及KTP倍频晶体的冷却均匀性及可靠性,并设计一种可靠性高的倍频晶体冷却装置。激光谐振腔采用L型腔结构,通过对声光调制器频率和倍频晶体温度对输出倍频激光功率影响的实验研究,得到激光器工作的最佳几何腔长为549 mm。在抽运功率为4.9 kW,声光调制频率为4 kHz时,532 nm倍频激光最大输出44 W,脉宽为80 ns;声光调制频率为10 kHz时,532 nm倍频激光最大输出为63 W,脉宽为140 ns,倍频效率为64%,总电-光效率为1.2%,光束质量为M2=11.1。
A KTP-overtone Nd:YAG solid-state laser with an acousto-optic (A-O) Q-switched cavity output of 532 W with an average power of 532 nm was reported. This paper analyzes the structure, pumping uniformity and the cooling uniformity and reliability of double-pumped metal gold plated cavity, and designs a kind of high frequency multiplying crystal cooling device with high reliability. The L cavity structure is adopted as the laser resonator. The experimental study of the influence of the acousto-optic modulator frequency and the doubled frequency crystal temperature on the output doubled laser power shows that the best geometric cavity length of the laser is 549 mm. At pumping power of 4.9 kW and acousto-optic modulation frequency of 4 kHz, the maximum output of 532 nm frequency doubling laser is 44 W and the pulse width is 80 ns. The maximum output of 532 nm doubling laser at the acoustooptic modulation frequency of 10 kHz is 63 W, a pulse width of 140 ns, a doubling efficiency of 64%, a total electrical-optical efficiency of 1.2% and a beam quality of M2 = 11.1.