Generation of vortex array beams from a thin-slice solid-state laser with shaped wide-aperture laser-diode pumping

Kenju Otsuka, Shu N. Chu

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

We demonstrate vortex array-beam generations from a thin-slice, wide-aperture, solid-state laser with laser-diode end-pumping. Radial and rectangular vortex arrays were found to be formed in a controlled fashion with symmetric and asymmetric pump-beam profiles, respectively. Most of these vortices exhibited singlefrequency oscillations arising from a spontaneous process of transverse mode locking of degenerate or nearly degenerate modes assisted by the laser nonlinearity. Single-frequency rectangular array beams consisting of a large number of vortices, e.g., closely packed 25, 36, or 46 vortex pixels, were generated, originating from Ince-Gaussian modes excited by the asymmetric pumping.

Original languageEnglish
Pages (from-to)10-12
Number of pages3
JournalOptics Letters
Volume34
Issue number1
DOIs
Publication statusPublished - 2009 Jan 1

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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