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), 483-488. (doi:10.1109/JQE.1969.1075673).


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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.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1109/JQE.1969.1075673
ISSNs: 0018-9197 (print)
Related URLs:
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Q Science > QC Physics
Divisions : University Structure - Pre August 2011 > Optoelectronics Research Centre
ePrint ID: 78836
Accepted Date and Publication Date:
Date Deposited: 11 Mar 2010
Last Modified: 31 Mar 2016 13:14

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