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长春光学精密机械与物... [1]
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会议论文 [1]
发表日期
2005 [1]
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Research on LD-Pumped dual wavelength Nd:YAG Laser with high beam quality for machining (EI CONFERENCE)
会议论文
ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China
Cui J.
;
Fan Z.
;
Zhao C.
;
Zhang J.
;
Niu G.
;
Shi Z.
;
Pei B.
;
Zhang G.
;
Xue Y.
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浏览/下载:24/0
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提交时间:2013/03/25
Considering laser medium thermal lens effect and thermal focal length changes with pumping power
conventionally
lasers are designed to operate in the middle of thermal stable zones
where the fundamental mode size is insensitive to thermal perturbation
while this method seems impossible when large fundamental mode size is required. Through self-select mode cavity
lasers are designed to work at the border of stable zone instead
where large fundamental mode size in gain media can be reached. With increase of pumping power and self-aperture mode-selective effect
mode size would grow up automatically to a certain value suitable for monomode resonance. With double 180 W pump modules
acoustic Q-switch and LBO external frequency-doubled
over 28 W which M2 equals 4.5 quasi-CW output green laser and 52W 1.064 um IR output is obtained simultaneity. With the insertion or not of the harmonic separator by footswitch
high beam quality green
IR
and green IR lasers are obtained conveniently.
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