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A device for laser beam diffusion and homogenisation

Cullis, A G, Webber, H C and Bailey, Paul (1979) A device for laser beam diffusion and homogenisation. Journal of Physics E: Scientific Instruments, 12 (8). pp. 688-689. ISSN 0022-3735

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Abstract

With the advent of methods for the pulsed annealing of materials using laser radiation, it has become increasingly important to achieve good beam uniformity. The authors describe a device based upon a diffusing screen coupled to a light guide which accepts a multimode beam directly from a laser and, irrespective of input beam inhomogeneities, yields an output beam with an exceptionally flat and uniform intensity distribution. The optical efficiency of the device is high and the output radiation power density can be controlled by adjusting diffuser design parameters. Deleterious speckle patterns in the output beam can be virtually eliminated.

Item Type: Article
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Schools: School of Applied Sciences
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Depositing User: Sharon Beastall
Date Deposited: 05 Sep 2012 11:24
Last Modified: 05 Sep 2012 11:24
URI: http://eprints.hud.ac.uk/id/eprint/14696

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