High brightness spectral beam combination of high-power vertical-external-cavity surface-emitting lasers

Yushi Kaneda, Li Fan, Ta Chen Hsu, Nasser Peyghambarian, Mahmoud Fallahi, Armis R. Zakharian, Jörg Hader, Jerome V. Moloney, Wolfgang Stoltz, Stephan Koch, Robert Bedford, Armen Sevian, Leonid Glebov

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

High brightness spectral beam combination of two high-power vertical-external-cavity surface-emitting laser (VECSEL) using volume Bragg grating in a photo-thermo-refractive (PTR) glass is demonstrated. High efficiency beam combination in excess of 90% is achieved, providing an efficient method for power scaling of diffraction limited beam. The beam quality of each starting lasers was 1.68 and 1.35, and that of combined beam was 1.9. Scaling opportunities based on the parameters of VECSELs and PTR Bragg gratings are discussed.

Original languageEnglish (US)
Pages (from-to)1795-1797
Number of pages3
JournalIEEE Photonics Technology Letters
Volume18
Issue number17
DOIs
StatePublished - Sep 1 2006

Keywords

  • Semiconductor laser
  • Spectral combination
  • Vertical-external-cavity surface-emitting laser (VECSEL)
  • Volume bragg grating (VBG)

ASJC Scopus subject areas

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

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