Abstract The spatial and temporal beam characteristics of a cw pumped CO 2 laser with active mirrors in the cavity have been investigated. The five-pass unstable cavity with magnification M = 2 was used, where one of the folding mirrors was replaced by a water cooled flexible mirror based on a bimorph piezoelement. The pulse-periodical regime of the laser generation in different frequency range of controlling signals with a 100% beam power modulation depth was realized. The maximal pulse power value exceeding three times the average power level was obtained at 3.8 kHz pulse repetition frequency. The modulation and stabilization of the output power of a CO 2 100 W laser with a Fabry-Perot interferometer was realized.
[1]
Heinz Haferkamp,et al.
Beam delivery by adaptive optics for material processing applications using high-power CO2 lasers
,
1994,
Other Conferences.
[2]
Emil Wolf,et al.
Principles of Optics: Contents
,
1999
.
[3]
K. Oughstun,et al.
Intracavity adaptive optic compensation of phase aberrations. I: Analysis
,
1981
.
[4]
R. Freeman,et al.
Intracavity adaptive optics. 1: Astigmatism correction performance.
,
1981,
Applied optics.
[5]
R. Freeman,et al.
Intracavity adaptive optics. 2: Tilt correction performance.
,
1981,
Applied optics.