Amplitude and phase reconstruction of a doughnut pattern in a CO2 laser

C. Lepers, V. Zehnle, Daniel Hennequin, Didier Dangoisse, Pierre Glorieux, A. Barsella, Ennio Arimondo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, we present an original detection method using three fast detectors to monitor the spatio-temporal dynamics of a bimode CO 2 laser with saturable absorber. We observe that the time dependent components of the modal amplitudes increase as the frequency degeneracy lift between the TEM 01 and TEM 10 modes is reduced. Just before locking the system undergoes a period-doubling cascade leading to chaos. We record the temporal evolution of the modal amplitudes and the optical phase difference between the two modes in the specific regimes within the period-doubling cascade. Numerical simulations are in good agreement with the experiments, in particular they confirm the existence of the period-doubling cascade.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsNeal B. Abraham, Yakov I. Khanin
Pages215-222
Number of pages8
Publication statusPublished - 1 Jan 1996
Externally publishedYes
EventLaser Optics '95: Nonlinear Dynamics in Lasers - St. Petersburg, Russia
Duration: 27 Jun 19951 Jul 1995

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2792
ISSN (Print)0277-786X

Conference

ConferenceLaser Optics '95: Nonlinear Dynamics in Lasers
CitySt. Petersburg, Russia
Period27/06/951/07/95

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