High-Power High Beam Quality Narrow-Linewidth Quasicontinuous Wave Microsecond Pulse 1064-nm Nd:YAG Amplifier

High-Power High Beam Quality Narrow-Linewidth Quasicontinuous Wave Microsecond Pulse 1064-nm Nd:YAG Amplifier

We demonstrated a high average power, high beam quality, narrow linewidth, quasicontinuous wave (QCW) diode-pumped 1064-nm Nd:YAG amplifier. A narrow-linewidth QCW pulse Nd:YAG oscillator was employed as the seed laser, providing a maximum average power of 53.4 W at a pulse repetition frequency of 5...

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Bibliographic Details
Main Authors: Chuan Guo, Qi Bian, Chang Xu, Junwei Zuo, Yong Bo, Zhimin Wang, Yu Shen, Nan Zong, Hongwei Gao, Yang Liu, Dafu Cui, Qinjun Peng, Zuyan Xu
Format: Article
Language:English
Published: IEEE 2016-01-01
Series:IEEE Photonics Journal
Subjects:
Diode pumped lasers
laser amplifiers
pulse propagation
solid-state laser
Online Access:https://ieeexplore.ieee.org/document/7748518/
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Summary:We demonstrated a high average power, high beam quality, narrow linewidth, quasicontinuous wave (QCW) diode-pumped 1064-nm Nd:YAG amplifier. A narrow-linewidth QCW pulse Nd:YAG oscillator was employed as the seed laser, providing a maximum average power of 53.4 W at a pulse repetition frequency of 500 Hz and pulse width of 108&#x00A0;<italic>&#x03BC; </italic>s with a beam quality factor M<sup>2</sup> &#x003D; 1.21. After that, a two-stage double-pass Nd:YAG amplifier was performed. The amplifier delivers a maximum output power of 238 W with a linewidth of 0.4 pm and a tunable range of 119.3 pm. The beam quality was measured to be M<sup>2</sup> &#x003D; 1.65. To the best of our knowledge, this represents the highest average power and the highest brightness for a narrow-linewidth QCW microsecond pulse 1064-nm laser.
ISSN:1943-0655

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