20 W, 15 ns high-repetition-rate and high-beam- quality MOPA laser by spherical aberration self- compensation at 1342 nm-Reference-Cited by-同舟云学术

20 W, 15 ns high-repetition-rate and high-beam- quality MOPA laser by spherical aberration self- compensation at 1342 nm

Published:2024-06-11 Issue: Volume: Page:
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Author:

Ye Zhibin¹,Li Xiaoran¹,Jiang Shu¹,Wu Fei¹,Huang Meng¹,Hu Hanmin¹,Qi Yunxuan²,Liu Bin³,Yan Hengfeng⁴

Affiliation:

1. Quzhou University

2. Megapeak(Suzhou) LASER Technology Corporation Limited

3. Hangzhou Bochang Photoelectric Technology Corporation Limited

4. Changzhou Inno Laser Technology Corporation Limited

Abstract

A master oscillator power amplifier (MOPA) pulsed laser operating at 1342 nm is demonstrated. It consists of an acousto-optical (A-O) Q-switched oscillator and two-stage Nd:YVO4 power amplifiers. The spherical aberration self-compensation technique is used in the second stage amplifier to obtain high-beam-quality laser output. The maximum average output power of 20.4 W is obtained with the oscillator power of 2.0 W and the total pump light power of 184.08 W, corresponding to an optical-optical efficiency of 11.08%. The repetition rate and pulse width are 100 kHz and 14.8 ns, respectively. The beam quality factor is Mx2=1.45 and My2=1.34. According to our knowledge, this is the maximum output power with a pulse width of ten-nanoseconds level and repetition rate of one-hundred-kilohertz level by an A-O Q-switch at the wavelength of 1342 nm.

Publisher

Research Square Platform LLC

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