Nd:YVO4复合腔激光器双波长激光输出及腔内和频研究
Investigation on a compound resonator Nd:YVO4 laser with dual-wavelength output and intracavity sum-frequency mixing
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摘要: 采用两个重叠的共线支腔构成的三镜复合腔，实现LD泵浦的Nd:YVO4激光器的1 064 nm和1 342 nm双波长激光运转。根据双波长振荡阈值相等条件，数值计算了1 064 nm支腔和1 342 nm支腔的腔长、支腔的输出耦合镜透过率之间的关系。合理选择两个支腔的参数，当泵浦功率13 W时，获得1 064 nm激光功率1.59 W,1 342 nm激光功率1.17 W的双波长激光输出。在满足腔内1 064 nm 和1 342 nm双波长光子数密度相等的条件下，计算了腔内和频的复合腔Nd:YVO4激光器的腔参数。采用Ⅱ类临界相位匹配KTP晶体作为和频器件，当808 nm泵浦光功率为12 W时，获得340 mW的和频593 nm激光输出。
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关键词:
- Nd:YVO4激光器 /
- 复合腔 /
- 双波长输出 /
- 和频激光
Abstract: A three-mirror compound configuration formed by two overlapping collinear cavities was used to achieve both 1 064 nm and 1 342 nm emission of an LD pumped Nd:YVO4 laser. According to the condition that the dual-wavelength laser oscillations possess the same threshold, the relations of cavity length and transmissivity at the output coupler of 1 064 nm cavity branch with that of 1 342 nm cavity branch was numerically calculated. The dual-wavelength lasers with 1.59 W output power at 1 064 nm and 1.17 W output power at 1 342 nm was obtained at the pump power of 13 W when the two cavity branches were optimized. The parameters of the compound resonator Nd:YVO4 laser with the intracavity sum-frequency mixing was calculated under the condition that the photon number densities of 1 064 nm and 1 34-
Key words:
- nd:yvo4 laser /
- compound resonator /
- dual-wavelength output /
- sum-frequency mixing laser
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