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Thermal effects in a hollow waveguide beam launch for CO2 laser power delivery

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Abstract

Thermal effects caused by launching conditions in a CO2 laser beam delivery that uses metallic hollow waveguides is investigated. It is found that front-end clipping is the main cause of thermal loading and generates a steep temperature gradient at the fiber front end while the continuous beam attenuation produces a temperature distribution declining slowly along the waveguide.

© 1996 Optical Society of America

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