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Microwave excitation of a diffusion-cooled CO2laser
- Source :
- Journal of Physics D: Applied Physics. 27:470-474
- Publication Year :
- 1994
- Publisher :
- IOP Publishing, 1994.
-
Abstract
- A microwave-excited (2.45 GHz), diffusion-cooled CO2 laser, capable of operating in a quasi-cw mode, has been developed. By separating the discharge structure from the feeding RF waveguide and using distributed coupling, previous problems with local contracting discharges could be surmounted. For effective diffusion cooling a planar 1.9 mm high discharge channel was used, a structure which easily allows area scaling of laser output power. Two discharge channel designs (metal/glass and all ceramic) were investigated, differing mainly in thermal conductivity and waveguide losses for the 10.6 mu m laser radiation. A conventional magnetron for microwave ovens was used as microwave source. System design and extensive measuring results are presented. With a first prototype non-optimized in gas mixture, optical resonator and waveguide surface quality laser output power above 20 W was obtained with an efficiency of about 10%.
- Subjects :
- Waveguide (electromagnetism)
Materials science
Acoustics and Ultrasonics
business.industry
Physics::Optics
Condensed Matter Physics
Laser
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
law.invention
Optics
Thermal conductivity
law
Optical cavity
Cavity magnetron
Laser power scaling
Diffusion (business)
business
Microwave
Subjects
Details
- ISSN :
- 13616463 and 00223727
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- Journal of Physics D: Applied Physics
- Accession number :
- edsair.doi...........d6459190821a5553444d3093fb7f6546