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Proceedings Paper

High-power waveguide lasers
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Paper Abstract

During the past few years high power lasers which incorporate intracavity optical waveguiding have been demonstrated in a number of different geometric formats. These include rectangular planar waveguide structures, two-dimensional multi-element waveguide array lasers and annular waveguide devices, all of which depend crucially on the operational flexibility of the transverse radiofrequency excitation technique. Here, we review the fundamental issues which underlie the attractions of the use of waveguiding structures in the design and construction of ultracompact, diffusion- cooled lasers which are efficient and operate at high average power levels. In particular, we review the properties of large area discharge planar waveguide CO2/CO lasers, where multi-kilowatt cw power levels have been demonstrated with excellent beam quality and efficiency. It is shown that similar concepts may also be applied to solid state lasers. In addition, the use of the multi-element array concept for high power scaling will be examined, and the operating characteristics of an ultra-compact 64 (4 X 16) element array laser operating at 2 kW cw output power will be described.

Paper Details

Date Published: 14 September 1998
PDF: 9 pages
Proc. SPIE 3343, High-Power Laser Ablation, (14 September 1998); doi: 10.1117/12.321585
Show Author Affiliations
Denis R. Hall, Heriot-Watt Univ. (United Kingdom)
Howard J. Baker, Heriot-Watt Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 3343:
High-Power Laser Ablation
Claude R. Phipps, Editor(s)

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