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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 33 — Nov. 20, 1999
  • pp: 6874–6878

Excess-noise dependence on intracavity aperture shape

G. P. Karman, G. S. McDonald, J. P. Woerdman, and G. H. C. New  »View Author Affiliations


Applied Optics, Vol. 38, Issue 33, pp. 6874-6878 (1999)
http://dx.doi.org/10.1364/AO.38.006874


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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.

© 1999 Optical Society of America

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(050.1940) Diffraction and gratings : Diffraction
(140.3460) Lasers and laser optics : Lasers
(270.2500) Quantum optics : Fluctuations, relaxations, and noise
(270.3430) Quantum optics : Laser theory

History
Original Manuscript: July 1, 1999
Revised Manuscript: July 1, 1999
Published: November 20, 1999

Citation
G. P. Karman, G. S. McDonald, J. P. Woerdman, and G. H. C. New, "Excess-noise dependence on intracavity aperture shape," Appl. Opt. 38, 6874-6878 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-33-6874

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