INTRA-PULSE DECREASE OF M(2) OF A COPPER-VAPOR LASER-BEAM

被引：5

作者：

OMATSU, T ^{[1
]}

TAKASE, T ^{[1
]}

KURODA, K ^{[1
]}

机构：

[1] UNIV TOKYO, INST IND SCI, MINATO KU, TOKYO 106, JAPAN

来源：

OPTICS COMMUNICATIONS | 1993年 / 101卷 / 3-4期

关键词：

D O I：

10.1016/0030-4018(93)90367-E

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The temporal behavior of the beam divergence of a copper vapor laser (CVL) equipped with on- or off-axis unstable resonators at 510.6 nm has been investigated experimentally and theoretically. The temporal change of the beam divergence is measured using a streak camera and is evaluated by the M2 factor. Narrowing of the beam divergence during the pulse is observed. Also is found that the difference of the narrowing ratio between the on-axis and off-axis unstable resonators resulted from the near-field pattern of the laser beam.

引用

页码：199 / 204

页数：6

共 10 条

[1] TIME-RESOLVED M2 OF NANOSECOND PULSES FROM A Q-SWITCHED VARIABLE-REFLECTIVITY-MIRROR ND-YAG LASER [J].