高功率连续侧面泵浦1 341.4 nm Nd:YAP激光器
High-power CW diode-side-pumped Nd:YAP laser at 1 341.4 nm
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摘要: 报道了一台线性偏振输出、波长为1 341.4 nm、采用激光二极管（LD）连续侧面泵浦的Nd:YAP激光器。通过分析Nd:YAP晶体的能级结构和跃迁特点，显示了Nd:YAP晶体作为1.3 μm波段激光器的工作物质的优点。实验对比了不同透过率的输出耦合镜片的输出功率。最终以透过率为6.5% 的输出耦合镜片，在555 W的LD泵浦功率下获得了121 W的平行于晶体c轴线性偏振（c偏振）的1 341.4 nm激光输出，光-光转化效率21.8%，斜率效率为41%；并且在c偏振激光失稳后成功获得了平行于a轴的线性偏振（a偏振）的1 339.2 nm激光。Abstract: A high-power linearly polarized CW diode-side-pumped Nd:YAlO3(Nd:YAP) laser oscillating at 1 341.4 nm was reported. By analyzing the level structure and characteristics of transition in Nd:YAP crystal, the advantages of Nd:YAP crystal as a kind of working matter medium of 1.3 μm laser were displayed. Different output couplers for the laser were studied by experiment. Finally, a c-axis polarized laser with an output power as high as 121 W at 1 341.4 nm was obtained with a coupler transmittance of 6.5% at the maximum pumping power of 555 W. The beam quality factor was 34, the optical-optical efficiency was 21.8% and the optical slope efficiency was 41%. The a-axis polarized laser at 1 339.2 nm was also successfully obtained at the c-axis polarized laser being instable.
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Key words:
- nd:yap laser /
- diode-side-pump /
- cw laser /
- linearly polarization
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