BACKWARD SRS COMPRESSION OF DIODE-PUMPED MICROCHIP LASER PULSES
ITMO University, Saint Petersburg, 197101, Russian Federation; leading engineer
V. V. Kiyko
Prokhorov General Physics Institute of the Russian Academy of Sciences, Department of High-Powered Lasers, Moscow;
V. A. Kondratyev
Prokhorov General Physics Institute of the Russian Academy of Sciences, Department of High-Powered Lasers, Moscow;
A. N. Sergeev
ITMO University, Saint Petersburg, 197101, Russian Federation; assistant
V. Y. Khramov
ITMO University; Professor
V. E. Yakobson
Research and Technological Institute of Optical Materials All-Russia Scientific Center “S. I. Vavilov State Optical Institute”, St. Petersburg; Senior Scientist
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Abstract. Backward SRS conversion of laser pulses from diode-pumped passively Q-switched sub-nanosecond microchip laser is investigated experimentally. Backward SRS conversion efficiency above 50 % and pulse width compression coefficient of 6.4 are reported to be measured in BaNO3 crystal at kHz repetition rate. A scheme for additional amplification of the first Stokes component in the so-called “kegel” mode of microchip laser generation is proposed.
Keywords:
backward SRS conversion, microchip laser, nonlinear optics
