Open AccessHighly stable sub-nanosecond Nd:YAG pump laser for optically synchronized optical parametric chirped-pulse amplification
Author(s) -
Yasuhiro Miyasaka,
Kotaro Kondo,
Maki Kishimoto,
M. Mori,
Masaki Kobayashi,
Hiromitsu Kiriyama
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.430953
Subject(s) - materials science , optics , nanosecond , laser , pulse duration , regenerative amplification , ti:sapphire laser , chirped pulse amplification , fiber laser , optoelectronics , sapphire , optical amplifier , ultrashort pulse , physics
We developed an optically synchronized highly stable frequency-doubled Nd:YAG laser with sub-nanosecond pulse duration. The 1064 nm seed pulses generated by soliton self-frequency shift in a photonic crystal fiber from Ti:sapphire oscillator pulses were stabilized by controlling input pulse polarization. The seed pulses were amplified to 200 mJ by diode-pumped amplifiers with a high stability of only <0.2% (rms). With an external LBO doubler, the system generated 330 ps green pulse energy of 130 mJ at 532 nm with a conversion efficiency of 65%. The pulse duration was further extended to 490 ps by adjusting Nd:YAG crystal temperature. To the best of our knowledge, these results present a longer pulse duration with higher stability than previous Nd:YAG lasers with sub-nanosecond optical synchronization.