145-watt high beam quality bidirectional voltage-supplied Q-switched Nd∶YAG master oscillator power amplifier laser

Zhenxu Bai; Mingliang Long; Liyuan Chen; Meng Chen; Gang Li

doi:10.1117/1.OE.52.2.024202

19 February 2013 145-watt high beam quality bidirectional voltage-supplied Q-switched Nd∶YAG master oscillator power amplifier laser

Zhenxu Bai, Mingliang Long, Liyuan Chen, Meng Chen, Gang Li

Author Affiliations +

Optical Engineering, Vol. 52, Issue 2, 024202 (February 2013). https://doi.org/10.1117/1.OE.52.2.024202

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.

Citation Download Citation

Zhenxu Bai, Mingliang Long, Liyuan Chen, Meng Chen, and Gang Li "145-watt high beam quality bidirectional voltage-supplied Q-switched Nd∶YAG master oscillator power amplifier laser," Optical Engineering 52(2), 024202 (19 February 2013). https://doi.org/10.1117/1.OE.52.2.024202

Published: 19 February 2013

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