Numerical investigations of cavity mode instabilities induced by a Gaussian gain medium

Research output: Contribution to journalArticle

Abstract

The variational equations of Firth are used to study instabilities of the Gaussian mode of a resonator containing a Gaussian gain medium. A series of symmetric two-mirror resonators were chosen for study. When the Rayleigh range of the bare cavity Gaussian mode becomes much greater than the cavity length, and the effective gain spot size drops below that of the bare cavity mode, regions of gain in which the cavity does not have a bound, stable modes appear. This is similar to the results obtained by Firth with a confocal cavity. The, results are compared to diffraction calculations for the one of the resonators. The comparison points out some intriguing areas of agreement, and suggest that it may be possible to observe the effects in a real system.

Original languageEnglish (US)
Pages (from-to)103-112
Number of pages10
JournalOptics Communications
Volume172
Issue number1
DOIs
StatePublished - Dec 15 1999

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Resonators
cavities
resonators
Mirrors
Diffraction
drop size
mirrors
diffraction

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Numerical investigations of cavity mode instabilities induced by a Gaussian gain medium. / Watson, J. P.; Wright, Ewan M; Peyghambarian, Nasser N.

In: Optics Communications, Vol. 172, No. 1, 15.12.1999, p. 103-112.

Research output: Contribution to journalArticle

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