Non-collinear CPOPA seeded by an Yb(3+)-doped self-starting passive mode-locked fiber laser.
Using a home-made seed at 1053 nm from a Yb(3+)-doped passively mode-locked fiber laser of 1.5 nJ/pulse, 362 ps pulse duration with a repetition rate of 3.842 MHz, a compact, low cost, stable and excellent beam quality non-collinear chirped pulse optical parametric amplifier omitting the bulky pulse stretcher has been demonstrated. A gain higher than 4.0 x 10(6), single pulse energy exceeding 6 mJ with fluctuations less than 2% rms, 14 nm amplified signal spectrum and recompressed pulse duration of 525 fs are achieved. This provides a novel and simple amplification scheme.
Wang
Hongying
H
State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China. why@opt.ac.cn
Liu
Hongjun
H
Li
Xiaoli
X
Zhao
Wei
W