Observation of power drop and low threshold due to beam waist shrinkage around critical configurations in an end-pumped Nd:YVO4 laser

Hsiao Hua Wu, Chich Chang Sheu, Ting Wei Chen, Ming Dar Wei, Wen Feng Hsieh

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Under pumping spot size less than that of the cavity mode, we observed a decrease of the fundamental mode power in an end-pumped solid-state laser when the cavity length was adjusted approaching certain critical resonator configurations where the transverse modes are degenerate. In the proximity of these configurations, we found, for the first time to our knowledge, that the laser exhibits a relatively low threshold pump power together with an unexpected far-field beam profile and shrinking beam waist.

Original languageEnglish
Pages (from-to)225-229
Number of pages5
JournalOptics Communications
Volume165
Issue number4
DOIs
Publication statusPublished - 1999 Jul 15

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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