Investigations of focusing conditions of the 1.2kW CO2 cw laser radiation beam

Grazyna T. Rabczuk; P. Kukiello

doi:10.1117/12.203299

1 March 1995 Investigations of focusing conditions of the 1.2kW CO₂ cw laser radiation beam

Grazyna T. Rabczuk, P. Kukiello

Proceedings Volume 2202, Laser Technology IV: Research Trends, Instrumentation, and Applications in Metrology and Materials Processing; (1995) https://doi.org/10.1117/12.203299
Event: Laser Technology: Fourth Symposium, 1993, Szczecin, Poland

Abstract

Focusing conditions of the cw CO₂ laser radiation beam emitted from the stable semi- spherical resonator have been investigated theoretically and experimentally. The laser beam behavior with the distance to the resonator output has been analyzed for two cases of the beam output coupling; through the flat and through the concave-convex partial reflector. The latter forms a meniscus lens of a long focal length. The meniscus outcoupler reduces divergence of the beam leaving the resonator and also allows for higher beam diameter in the plane of the focusing lens. It results in the smaller dimensions of the focus spot and in the higher values of the radiation power density which are required for some applications.

Citation Download Citation

Grazyna T. Rabczuk and P. Kukiello "Investigations of focusing conditions of the 1.2kW CO₂ cw laser radiation beam", Proc. SPIE 2202, Laser Technology IV: Research Trends, Instrumentation, and Applications in Metrology and Materials Processing, (1 March 1995); https://doi.org/10.1117/12.203299

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