Generation of high-order Hermite-Gaussian modes in end-pumped solid-state lasers for square vortex array laser beam generation

Shu-Chun Chu, Yun Ting Chen, Ko Fan Tsai, Kenju Otsuka

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

This study reports the first systematic approach to the excitation of all high-order Hermite-Gaussian modes (HGMs) in end-pumped solidstate lasers. This study uses a metal-wire-inserted laser resonator accompanied with the "off axis pumping" approach. This study presents numerical analysis of the excitation of HGMs in end-pumped solid-state lasers and experimentally generated HGM patterns. This study also experimentally demonstrates the generation of an square vortex array laserbeams by passing specific high-order HGMs (HGn, n + 1or HGn + 1,n modes) through a Dove prism-embedded unbalanced Mach-Zehnder interferometer [Optics Express 16, 19934-19949]. The resulting square vortex array laser beams with embedded vortexes aligned in a square array can be applied to multi-spot dark optical traps in the future.

Original languageEnglish
Pages (from-to)7128-7141
Number of pages14
JournalOptics Express
Volume20
Issue number7
DOIs
Publication statusPublished - 2012 Mar 26

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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