High power high beam quality diode-pumped 1319-nm Nd:YAG oscillator-amplifier laser system

doi:10.1088/1674-1056/19/6/064208

Abstract This paper demonstrated a high power and high beam quality diode-pumped 1319-nm Nd:YAG master oscillator-power amplifier laser system. A thermally near-unstable resonator with four-rod birefringence compensation flat--flat cavity was adopted as the master oscillator. A solid etalon was inserted in the unidirectional ring resonator to compress the laser linewidth. Under a repetition rate of 500 Hz and pulse width of 160 $\mu$s, the master oscillator delivers an average output power of 16.8 W at 1319 nm with linear polarisation, beam quality factor $M^{2} = 1.16$ and linewidth of 3.2 GHz. A double-pass power amplifier with two amplifier stages was employed for higher power scaling and the output power was amplified to be 25.9 W with $M^{2} = 1.43$.

Keywords: master oscillator-power amplifier system Nd:YAG ring laser

Received: 12 August 2009
Accepted manuscript online:

PACS:	42.55.Rz	(Doped-insulator lasers and other solid state lasers)
	42.60.By	(Design of specific laser systems)
	42.60.Da	(Resonators, cavities, amplifiers, arrays, and rings)
	42.60.Jf	(Beam characteristics: profile, intensity, and power; spatial pattern formation)
	42.55.Xi	(Diode-pumped lasers)
	42.60.Lh	(Efficiency, stability, gain, and other operational parameters)

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Xie Shi-Yong(谢仕永), Lu Yuan-Fu(鲁远甫), Ma Qing-Lei(马庆磊),Wang Peng-Yuan(王鹏远),Shen Yu(申玉), Zong Nan(宗楠),Yang Feng(杨峰),Bo Yong(薄勇), Peng Qin-Jun(彭钦军),Cui Da-Fu(崔大复), and Xu Zu-Yan(许祖彦) High power high beam quality diode-pumped 1319-nm Nd:YAG oscillator-amplifier laser system 2010 Chin. Phys. B 19 064208

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High power high beam quality diode-pumped 1319-nm Nd:YAG oscillator-amplifier laser system

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