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Efficient femtosecond green-light source with a diode-pumped mode-locked Yb~(3+):KY(WO_(4))_(2) laser

机译:具有二极管泵浦锁模Yb〜(3 +):KY(WO_(4))_(2)激光器的高效飞秒绿光源

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摘要

Efficient generation of femtosecond pulses at 524 nm is demonstrated by the extracavity frequency doubling of the output of a diode-pumped femtosecond Yb~(3+):KY(WO_(4))_(2) laser using a periodically poled LiTaO_(3) crystal. An average second-harmonic power of 120 mW is produced at an internal conversion efficiency of 40%. The temporal characteristics of the frequency-doubled pulses as a function of focusing conditions in a thick nonlinear crystal are investigated experimentally, and pulses as short as 225 fs are generated at a pulse repetition frequency of 86 MHz.
机译:通过使用周期性极化的LiTaO_(3),将二极管泵浦飞秒Yb〜(3 +):KY(WO_(4))_(2)激光器的输出进行腔外倍频,可以有效地产生524 nm的飞秒脉冲。 ) 水晶。内部转换效率为40%时,平均二次谐波功率为120 mW。实验研究了倍频脉冲随时间的变化,该时间特征是厚非线性晶体中聚焦条件的函数,并且在86 MHz的脉冲重复频率下产生了短至225 fs的脉冲。

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