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High-power efficient continuous-wave TEM_(00) intracavity frequency-doubled diode-pumped Nd:YLF laser

机译:大功率高效连续波TEM_(00)腔内倍频二极管泵浦Nd:YLF激光器

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摘要

We describe experimental results with a diode-pumped, intracavity-doubled cw Nd:YLF laser in multilongitudinal mode and TEM_(00) spatial transverse mode with a critical phase-matched lithium triborate crystal. Taking into account the thermal effects of Nd:YLF, energy-transfer up conversion, and the thermal fracture limit, we set up a power-scaling model to optimize and design a fundamental diode- pumped Nd:YLF laser. A highly efficient second-harmonic laser was achieved, based on the optimized cavity design. A second-harmonic-generation output power of 20.5 W at a wavelength of 527 nm was obtained at an incident pump power of 60 W, corresponding to an optical-to-optical efficiency of 34.2%. The TEM00 mode green laser operates at a measured M~2 parameter of 1.2. The instability of the green laser power is less than +-1% RMS.
机译:我们用二极管泵浦,腔内双倍的Cw Nd:YLF激光器以多纵向模式和TEM_(00)空间横向模式(具有关键的相位匹配三硼酸锂晶体)描述实验结果。考虑到Nd:YLF的热效应,能量转移转换和热断裂极限,我们建立了功率缩放模型,以优化和设计基本的二极管泵浦Nd:YLF激光器。基于优化的腔体设计,获得了高效的二次谐波激光器。在60 W的入射泵浦功率下,在527 nm的波长下获得20.5 W的二次谐波产生输出功率,对应于34.2%的光学效率。 TEM00模式绿色激光器以M〜2的1.2实测值工作。绿色激光功率的不稳定性小于-1%RMS。

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