title: 1.6  MW peak power, 90  ps all-solid-state laser from an aberration self-compensated double-passing end-pumped Nd:YVO4rod amplifier.
abstract: In this paper a delicately designed double-passing end-pumped Nd:YVO4rod amplifier is reported that produces 10.2 W average laser output when seeded by a 6 mW Nd:YVO4microchip laser at a repetition rate of 70 kHz with pulse duration of 90 ps. A pulse peak power of ∼1.6  MW and pulse energy of ∼143  μJ is achieved. The beam quality is well preserved by a double-passing configuration for spherical-aberration compensation. The laser-beam size in the amplifier is optimized to prevent the unwanted damage from the high pulse peak-power density. This study provides a simple and robust picosecond all-solid-state master oscillator power amplifier system with both high peak power and high beam quality, which shows great potential in the micromachining.
authors.forename: Chunhua
authors.initials: C
authors.lastname: Wang
authors.forename: Chong
authors.initials: C
authors.lastname: Liu
authors.forename: Lifeng
authors.initials: L
authors.lastname: Shen
authors.forename: Zhiliang
authors.initials: Z
authors.lastname: Zhao
authors.forename: Bin
authors.initials: B
authors.lastname: Liu
authors.forename: Hongbo
authors.initials: H
authors.lastname: Jiang