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Excess-noise dependence on intracavity aperture shape

Karman, GP, Mcdonald, GS, Woerdman, JP and New, GHC 1999, 'Excess-noise dependence on intracavity aperture shape' , Applied Optics, 38 (33) , pp. 6874-6878.

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Abstract

In lasers with nonorthogonal eigenmodes the excess-noise factor K can be large, especially in unstable-cavity lasers with hard-edged intracavity apertures. To the best of our knowledge, we report the first detailed study of the dependence of K on aperture shape. Calculations and measurements of K for unstable-cavity lasers with variable-size apertures of triangular, square, pentagonal, hexagonal, octagonal, and rhomboid symmetries are summarized. It is shown that both the magnitude of K and its resonant behavior strongly depend on aperture shape and that many aspects of this dependence can be explained in terms of one-dimensional resonance lengths.

Item Type: Article
Themes: Energy
Media, Digital Technology and the Creative Economy
Subjects outside of the University Themes
Schools: Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Materials & Physics Research Centre
Journal or Publication Title: Applied Optics
Publisher: Optical Society of America
Refereed: Yes
ISSN: 1559-128X
Depositing User: GS McDonald
Date Deposited: 14 Oct 2011 10:04
Last Modified: 20 Aug 2013 17:14
URI: http://usir.salford.ac.uk/id/eprint/18338

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