Cavity design of laterally coupled all solid-state laser arrays with Talbot effect

Y. Kono, M. Takeoka, A. Uchida, F. Kannari

Research output: Contribution to journalConference articlepeer-review

Abstract

Brighter far-field pattern of a phase-locked Nd:YAG microchip laser array was obtained by the Talbot effect in a three-mirror cavity. The laterally coupled Nd:YAG microchip laser array produced a pair of spots with sharper peaks with an angular separation of λ/d in its far-field, where d is the distance between the adjacent sources, indicating an out-of-phase spatial mode coupling was improved. The far-field spot size is reduced by a factor of 9.3 compared with that obtained by incoherent pile of the individual microchip laser outputs. We demonstrated that the far-field pattern is improved by enhancing the self-imaging with side mirrors which make the array source disguise as infinity. A mode selecting slit placed right after the crystal is also effective to stabilize the out-of-phase mode.

Original languageEnglish
Pages (from-to)240-247
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3611
Publication statusPublished - 1999
EventProceedings of the 1999 Laser Resonators II - San Jose, CA, USA
Duration: 1999 Jan 271999 Jan 29

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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