TIME-RESOLVED MEASUREMENT OF SPATIAL COHERENCE OF A COPPER VAPOR LASER-BEAM USING A REVERSAL SHEAR INTERFEROMETER

被引：19

作者：

OMATSU, T ^{[1
]}

KURODA, K ^{[1
]}

TAKASE, T ^{[1
]}

机构：

[1] SCI UNIV TOKYO, SHINJUKU KU, TOKYO 162, JAPAN

来源：

OPTICS COMMUNICATIONS | 1992年 / 87卷 / 5-6期

关键词：

544 Copper and Alloys - 741 Light; Optics and Optical Devices - 744 Lasers - 941 Acoustical and Optical Measuring Instruments;

D O I：

10.1016/0030-4018(92)90475-7

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have measured the temporal change of spatial coherence of a copper vapor laser (CVL) beam with an unstable resonator by a reversal shear interferometer and a streak camera. By this method, we can evaluate the temporal change of the spatial coherence function from a single-shot measurement. We have observed stepwise increase of the coherence width at intervals equal to the transit time of the resonator. The values of the first, second and third plateaus were 5 mm, 6.7 mm and 13 mm, respectively, when an unstable resonator of magnification factor 60 was used. Moreover we have verified the result by a theoretical calculation on the basis of a passive resonator model.

引用

页码：278 / 286

页数：9

共 17 条

[1] TEMPORAL AND SPATIAL PROPERTIES OF AN OSCILLATOR AMPLIFIER COPPER VAPOR LASER [J].