具有二极管泵浦锁模Yb3+:KY(WO4)2激光器的高效飞秒绿色光源。

Efficient femtosecond green-light source with a diode-pumped mode-locked Yb3+:KY(WO4)2 laser.

作者信息

Lagatsky A A, Rafailov E U, Sarmani A R, Brown C T A, Sibbett W, Ming L, Smith P G R

机构信息

The Ultrafast Photonics Collaboration, J. F. Allen Physics Research Laboratories, School of Physics and Astronomy, University of St. Andrews, St. Andrews KY16 9SS, Scotland, UK.

出版信息

Opt Lett. 2005 May 15;30(10):1144-6. doi: 10.1364/ol.30.001144.

DOI:10.1364/ol.30.001144

PMID:15943294

Abstract

Efficient generation of femtosecond pulses at 524 nm is demonstrated by the extracavity frequency doubling of the output of a diode-pumped femtosecond Yb3+:KY(WO4)2 laser using a periodically poled LiTaO3 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.

摘要

利用周期极化钽酸锂晶体对二极管泵浦飞秒Yb3+:KY(WO4)2激光器的输出进行腔外倍频，实现了524 nm飞秒脉冲的高效产生。在内部转换效率为40%时，产生了120 mW的平均二次谐波功率。实验研究了厚非线性晶体中倍频脉冲的时间特性与聚焦条件的关系，并在86 MHz的脉冲重复频率下产生了短至225 fs的脉冲。