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Proceedings Paper

SF/FAF Laser Oscillator/Amplifiers
Author(s): S. T. Shah; W. M. Steen
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Paper Abstract

There are two major requirements in laser design; sufficient power and correct mode structure. In the design of higher powered lasers the mode structure may suffer. Current designs are often based upon coupled cavities, in which a basic laser module is joined to another to make a single vacuum, optical cavity system. Examples of such an arrangement are the latest Ferranti CLL10, UTRC 25kW and the older Spectra Physics 5kW lasers. An alternative approach is to couple two or more lasers as an oscillator/amplifier system. The results of joining two Fast Axial Flow (FAF) lasers in this way have been discussed previously (1). This paper discusses some results from the coupling of a slow flow (SF) laser oscillator having a near Gaussian mode structure to a FAF amplifier. The result was a more powerful beam with a similar near Gaussian mode. The possibilit ies for laser design and mode engineering by this technique are illustrated by reference to cutting and welding experiments.

Paper Details

Date Published: 22 September 1987
PDF: 5 pages
Proc. SPIE 0801, High Power Lasers: Sources, Laser-Material Interactions, High Excitations, and Fast Dynamics, (22 September 1987); doi: 10.1117/12.941216
Show Author Affiliations
S. T. Shah, Imperial College of Science and Technology (United Kingdom)
W. M. Steen, Imperial College of Science and Technology (United Kingdom)


Published in SPIE Proceedings Vol. 0801:
High Power Lasers: Sources, Laser-Material Interactions, High Excitations, and Fast Dynamics
Ernst-Wolfgang Kreutz; A. Quenzer; Dieter Schuoecker, Editor(s)

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