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Proceedings Paper

Propagating aberrated light
Author(s): C. Mafusire; A. Forbes
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Paper Abstract

We outline a theory for the calculation of the laser beam quality factor of an aberrated laser beam. We provide closed form equations which show that the beam quality factor of an aberrated Gaussian beam depends on all primary aberrations except tilt, defocus and x-astigmatism. The model is verified experimentally by implementing aberrations as digital holograms in the laboratory. We extend this concept to defining the mean focal length of an aberrated lens, and show how this definition may be of use in controlling thermal aberrations in laser resonators. Finally, we look at aberration correction and control using a combination of spatial light modulators and adaptive mirrors.

Paper Details

Date Published: 6 February 2012
PDF: 12 pages
Proc. SPIE 8236, Laser Resonators, Microresonators, and Beam Control XIV, 82360E (6 February 2012); doi: 10.1117/12.910598
Show Author Affiliations
C. Mafusire, CSIR National Laser Ctr. (South Africa)
Univ. of KwaZulu-Natal (South Africa)
A. Forbes, CSIR National Laser Ctr. (South Africa)
Univ. of KwaZulu-Natal (South Africa)
Stellenbosch Univ. (South Africa)


Published in SPIE Proceedings Vol. 8236:
Laser Resonators, Microresonators, and Beam Control XIV
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko, Editor(s)

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