High-power fast-axial-flow CO2 laser with a variable-reflectivity output coupler
Optics Letters, Vol. 15, Issue 24, pp. 1452-1454 (1990)
http://dx.doi.org/10.1364/OL.15.001452
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Abstract
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.
© 1990 Optical Society of America
Citation
P. Sona, P. Muys, G. Sherman, and Ch. Leys, "High-power fast-axial-flow CO2 laser with a variable-reflectivity output coupler," Opt. Lett. 15, 1452-1454 (1990)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-15-24-1452
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