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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 15, Iss. 24 — Dec. 15, 1990
  • pp: 1452–1454

High-power fast-axial-flow CO2 laser with a variable-reflectivity output coupler

P. Sona, P. Muys, G. Sherman, and Ch. Leys  »View Author Affiliations


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

History
Original Manuscript: June 19, 1990
Manuscript Accepted: October 21, 1990
Published: December 15, 1990

Citation
P. Sona, G. Sherman, Ch. Leys, and P. Muys, "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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References

  1. P. Muys, J. Bastiaensens, Proc. Soc. Photo-Opt. Instrum. Eng. 1027, 35 (1988).
  2. P. Muys, P. Sona, Laser Mag. (April1989), p. 38.
  3. S. de Silvestri, P. Laporta, V. Magni, O. Svelto, IEEE J. Quantum Electron. 24, 1172 (1988). [CrossRef]
  4. H. Hügel, Proc. Soc. Photo-Opt. Instrum. Eng. 650, 2 (1986).

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