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Optical Engineering

145-watt high beam quality bidirectional voltage-supplied Q-switched Nd∶YAG master oscillator power amplifier laser
Author(s): Zhenxu Bai; Mingliang Long; Liyuan Chen; Meng Chen; Gang Li
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Paper Abstract

We present a high compact structure laser diode (LD) side-pumped all-solid-state Q-switched master oscillator power amplifier (MOPA) laser system with high beam quality. Bidirectional voltage-supplied Q-switched and MOPA technologies were introduced in the design. An in-center wavelength of 1064 nm with pulse width adjustability from 5 to 18 ns was obtained at the repetition rate of 500 Hz. Through multistage Nd∶YAG amplifiers at the pulse width of 6 ns, the oscillator was scaled up to 145 W and the corresponding peak power reached 48.3 MW with single pulse energy fluctuation less than 0.45% in 1 h operation.

Paper Details

Date Published: 19 February 2013
PDF: 5 pages
Opt. Eng. 52(2) 024202 doi: 10.1117/1.OE.52.2.024202
Published in: Optical Engineering Volume 52, Issue 2
Show Author Affiliations
Zhenxu Bai, Beijing Univ. of Technology (China)
Mingliang Long, Beijing Univ. of Technology (China)
Liyuan Chen, Beijing Univ. of Technology (China)
Meng Chen, Beijing Univ. of Technology (China)
Gang Li, Beijing Univ. of Technology (China)


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