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描述了一种可调谐全固态Nd:YVO4/LBO倍频连续671nm环形激光器的结构参数和相关实验研究。激光器采用四镜环形腔结构,利用880nm激光二极管(LD)端面抽运YVO4-Nd:YVO4复合晶体和Ⅰ类相位匹配的LBO倍频方式,加入TGG旋光器和λ/2波片组成的光学单向器实现单向运转,通过对法布里-珀罗(F-P)标准具角度和腔镜压电晶体电压的调节实现了激光输出波长671nm附近的调频。在抽运功率为23W,吸收抽运功率为14.5W时,输出单频671nm连续红光最高功率为1.08W,光-光转换效率为7.4%;加标准具调谐时,获得了最高功率为738mW的可调谐红光输出。
The structural parameters and related experimental studies of a tunable all solid state Nd: YVO4 / LBO continuous frequency 671nm circular laser are described. The laser uses a four-mirror annular cavity structure. By using the 880nm laser diode (LD) end-face pumping YVO4-Nd: YVO4 complex crystal and the phase-matched LBO frequency doubling mode, the optical cell consisting of a TGG polarizer and a λ / 2 waveplate The one-way operation of the device was realized. The modulation frequency of the Fabry-Perot (FP) etalon and the piezocrystal of the endoscope were used to realize the frequency modulation around the laser output wavelength of 671 nm. When the pumping power is 23W and the absorption pumping power is 14.5W, the maximum output power of continuous single-frequency 671nm red light is 1.08W and the light-to-light conversion efficiency is 7.4%. When the etalon is tuned, the maximum power is 738mW Tunable red light output.