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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 31, Iss. 24 — Aug. 20, 1992
  • pp: 5114–5120

Transmission of kilowatt-class CO2 laser light through dielectric-coated metallic hollow waveguides for material processing

Akihito Hongo, Ken’ichi Morosawa, Kazuhisa Matsumoto, Tsuneo Shiota, and Takashi Hashimoto  »View Author Affiliations


Applied Optics, Vol. 31, Issue 24, pp. 5114-5120 (1992)
http://dx.doi.org/10.1364/AO.31.005114


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Abstract

We have measured the transmittance of 3-kW CO2 laser light through Ge-coated Ag hollow waveguides. The basic characteristics such as transmissivity, bending loss, and output-beam properties are described. A maximum laser power of 2.6 kW was delivered through a straight hollow waveguide that was 1.7 mm in diameter and 2 m long. Furthermore, 4-m-long waveguides were fabricated by joining two waveguides. Finally, preliminary experiments on welding steel plates were done with the light transmitted through the waveguide. Although the focusing properties of the output beam should be improved for practical laser processing, this type of waveguide is promising for high-power CO2 laser-light transmission.

© 1992 Optical Society of America

History
Original Manuscript: October 7, 1991
Published: August 20, 1992

Citation
Akihito Hongo, Ken’ichi Morosawa, Kazuhisa Matsumoto, Tsuneo Shiota, and Takashi Hashimoto, "Transmission of kilowatt-class CO2 laser light through dielectric-coated metallic hollow waveguides for material processing," Appl. Opt. 31, 5114-5120 (1992)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-31-24-5114

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