IMPROVEMENT OF SLAB-LASER BEAM DIVERGENCE BY USING AN OFF-AXIS UNSTABLE STABLE RESONATOR

被引：24
作者：
KUBA, K
YAMAMOTO, T
YAGI, S
机构：
[1] Central Research Laboratory, Mitsubishi Electric Corporation, Amagasaki, Hyogo, 661
来源：
OPTICS LETTERS | 1990年 / 15卷 / 02期
关键词：
D O I：
10.1364/OL.15.000121
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Reduction of the beam divergence of a solid-state slab-geometry laser by using an off-axis unstable–stable resonator is described. The resonator acts as an off-axis negative-branch unstable resonator in the slab-width direction. This resonator configuration yields a small beam divergence of 2.5 mrad in the unstable-resonator direction at an average output power of 120 W. This improvement in beam quality is achieved without appreciable loss of efficiency. © 1990 Optical Society of America.
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页码：121 / 123
页数：3
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