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Astigmatic Gaussian beams produced by axially asymmetric laser cavities

Hanna, D.C. (1969) Astigmatic Gaussian beams produced by axially asymmetric laser cavities IEEE Journal of Quantum Electronics, 5, (10), pp. 483-488. (doi:10.1109/JQE.1969.1075673).

Record type: Article


Gaussian beams generated within astigmatic resonators are themselves astigmatic, having wavefront curvatures and spot sizes that are different when measured in two orthogonal directions. Expressions are derived for the confocal parameters, spot sizes, waist positions, and stability conditions of beams formed within spherical mirror resonators that contain one or more inclined plates (or Brewster-ended laser rods). An expression is also derived for the resonant frequencies of the TEM(mn) mode in such a resonator. It is shown that the frequency degeneracy between modes of the same m + n is lifted and the frequency splittings are calculated. The astigmatism produced by prisms used for dispersion is also considered and precautions are described for avoiding serious astigmatism in resonators containing such prisms.

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Published date: 1969


Local EPrints ID: 78836
ISSN: 0018-9197
PURE UUID: 6025aa83-d462-482a-a5e4-e2307647a052

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:21

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Author: D.C. Hanna

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