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Efficient resonant frequency doubling of a cw Nd : YAG laser in bulk periodically poled KTiOPO4

机译:批量周期性极化KTiOPO4的Cw Nd:YAG激光器的有效谐振倍频

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A cw Nd:YAG laser was quasi-phase-matched frequency doubled by a bulk periodically poled flux-grown KTiOPO4 crystal in an external resonant cavity. The conversion efficiency and the second-harmonic power with a pump of 225 mW were 55% and 123.5 mW, respectively. The loss of the l-cm-long crystal, which operated near mom temperature, was 1.3% and was dominated by scatter from the cleaved facets of the crystal. No damage, photorefractive or other, was observed at intensites of 370 W mm(-2), but beam size had to be optimized to eliminate thermal-induced instabilities in the doubling cavity. (C) 1998 Optical Society of America. [References: 15]
机译:连续Nd:YAG激光通过外部谐振腔中的周期性周期性极化磁通生长的KTiOPO4晶体使准相位匹配频率加倍。泵为225 mW时的转换效率和二次谐波功率分别为55%和123.5 mW。在妈妈的温度附近工作的长为1厘米的晶体的损失为1.3%,并且主要来自晶体劈开面的散射。在强度为370 W mm(-2)的情况下,未观察到光折变或其他损伤,但必须优化光束尺寸以消除倍增腔中的热诱导不稳定性。 (C)1998年美国眼镜学会。 [参考:15]

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