Spontaneous transverse pattern formation in a microchip laser excited by a doughnut pump profile

Yung-Fu Chen*, Yu-Pin Lan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

A transition from a pure Laguerre-Gaussian (LG) mode to a pattern of optical vortex lattices in a large-Fresnel-number microchip laser is experimentally demonstrated by controlling the cavity Q-factor. The cooperative frequency locking of nearly degenerate modes is found to be a primary process for the generation of the optical vortex lattices in a class-B laser. When the cavity Q-factor is high enough, a LG-like mode and a structure of optical vortex lattices are found to coexist. Competition between coexisting transverse patterns of different symmetry gives rise to chaotic fluctuations.

Original languageEnglish
Pages (from-to)453-456
Number of pages4
JournalApplied Physics B: Lasers and Optics
Volume75
Issue number4-5
DOIs
StatePublished - 1 Oct 2002

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