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Updated: Aug 17, 2026
20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
Published on: July 12, 2017
Efficient femtosecond green-light source with a diode-pumped mode-locked Yb3+:KY(WO4)2 laser
A A Lagatsky1, E U Rafailov, A R Sarmani
1The Ultrafast Photonics Collaboration, J. F. Allen Physics Research Laboratories, School of Physics and Astronomy, University of St. Andrews, St. Andrews KY16 9SS, Scotland, UK. aal2@st-andrews.ac.uk
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.
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