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Proceedings Paper

Laser beam propagation characteristics of incoherently added diode bars
Author(s): Andrew Forbes; Sandile Ngcobo; Daniel Esser; Dieter Preussler; Christoph Bollig
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Paper Abstract

The second moment method of laser beam propagation allows for the calculation of the beam quality factor for any laser beam, or combination of laser beams. When several laser beams are added, their effective beam quality factor is not simply the sum of the individual beam quality factors, that is, it does not act as a linear operator. In this paper we derive an analytical expression for the beam quality factor of incoherently added laser beams whose centroids are not collinear. We illustrate the versatility of the final result by showing how this may be applied to the problem of the laser beam propagation characteristics of high power diode bar stacks.

Paper Details

Date Published: 9 September 2008
PDF: 9 pages
Proc. SPIE 7062, Laser Beam Shaping IX, 70621A (9 September 2008); doi: 10.1117/12.793691
Show Author Affiliations
Andrew Forbes, CSIR National Laser Ctr. (South Africa)
Univ. of KwaZulu-Natal (South Africa)
Sandile Ngcobo, CSIR National Laser Ctr. (South Africa)
Daniel Esser, CSIR National Laser Ctr. (South Africa)
Dieter Preussler, CSIR National Laser Ctr. (South Africa)
Christoph Bollig, CSIR National Laser Ctr. (South Africa)

Published in SPIE Proceedings Vol. 7062:
Laser Beam Shaping IX
Andrew Forbes; Todd E. Lizotte, Editor(s)

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