HIGH-POWER FAST-AXIAL-FLOW CO2-LASER WITH A VARIABLE-REFLECTIVITY OUTPUT COUPLER

被引：11

作者：

SONA, P

MUYS, P

SHERMAN, G

LEYS, C

机构：

[1] LASER POWER OPT,SAN DIEGO,CA 92130

[2] STATE UNIV GHENT,FAC ENGN,PHYS LAB,B-9000 GHENT,BELGIUM

来源：

OPTICS LETTERS | 1990年 / 15卷 / 24期

关键词：

D O I：

10.1364/OL.15.001452

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report what is to our knowledge the first cw, dc-excited, fast-axial-flow CO2 laser using a variable-reflectivity output coupler. A super-Gaussian reflectivity profile of order 8 with 96% central reflectivity has been achieved by depositing a low-absorption coating onto a ZnSe substrate. The unstable resonator oscillated in the lowest-order mode to produce a diffraction-limited beam of 300 W of power and 0.35-mrad divergence angle (FWHM). The measured near field and far field are in good agreement with the mathematical model. The technique lends itself to extrapolation to the kilowatt level.

引用

页码：1452 / 1454

页数：3