High-Brightness 100 Hz/363 mJ Picosecond Nd:YAG Laser System for Ultra-Remote Laser Ranging
IEEE Journal of Quantum Electronics(2020)
摘要
A high pulse energy and high beam quality Nd:YAG laser system with extremely high brightness of 105 PW/sr
$\cdot $
cm
2
is reported. The system is based on a master oscillator power amplifier scheme containing a Nd:YVO
4
mode-locked oscillator, laser diode end-pumped Nd:YAG regenerative amplifier, Ø6.35-mm double-pass amplifier, and two Ø15-mm double-pass amplifiers. Laser pulses with energy of 363 mJ and pulse duration of 63 ps were obtained at a repetition rate of 100 Hz, corresponding to a peak power of ~5.76 GW. A near-Gaussian beam with
$M^{2} < 2.2$
and a narrow bandwidth with 0.17 nm were achieved, which make this laser system an attractive light source for ultra-remote laser ranging.
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关键词
Lasers,optical pulse amplifiers,laser beam distortion,nonlinear optics
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