论文部分内容阅读
文章采用了三镜环形腔内插入标准具获取高功率窄线宽可调谐1 064 nm激光。对环形腔的单向运行、标准具压窄线宽与调谐波长及激光大基模体积运转进行了理论分析与计算,结合实验优化了腔镜曲率与输出耦合率。在808 nm半导体激光泵浦功率151 W条件下,获得输出功率33.7 W、光束质量因子M 2=1.28、线宽0.1 GHz的单向1 064 nm激光输出,相应的光转换效率22.3%。采用高精度控温仪对标准具进行精确温控,实现激光波长的精密调谐。改变标准具温度获得1 064 nm波长调谐范围72.6 GHz,调谐精度为220 MHz。波长调谐过程中1 064 nm激光输出功率变化约10%。整个系统稳定可靠,而且相对简单,较易实现,为获得可调谐窄线宽1 064 nm激光提供了实用有效的技术手段。
The article uses a three-mirror ring cavity insertion etalon to obtain high-power narrow-linewidth tunable 1 064 nm laser. The uniaxial operation of the annular cavity, etalon with narrowing line width and tuning wavelength and the laser large basic module volumetric operation are theoretically analyzed and calculated. The curvature of the endoscope and the output coupling ratio are optimized by experiments. The laser output of 33.7 W, beam quality factor M 2 = 1.28 and linewidth 0.1 GHz unidirectional 1 064 nm laser output were obtained at a power of 808 nm with a pump power of 151 W. The corresponding light conversion efficiency was 22.3%. Accurate temperature control of the etalon by high-precision temperature control instrument enables precise tuning of the laser wavelength. Change the etalon temperature to obtain a wavelength tuning range of 1 064 nm at 72.6 GHz with tuning accuracy of 220 MHz. Wavelength tuning process 1 064 nm laser output power change of about 10%. The system is stable, reliable, relatively simple and easy to implement, and provides a practical and effective technique for obtaining a tunable narrow linewidth of 1 064 nm laser.