Beam combination of multiple vertical external cavity surface emitting lasers via volume Bragg gratings

Chunte A. Lu, William P. Roach, Genesh Balakrishnan, Alexander R. Albrecht, Jerome V. Moloney, Leonid B. Glebov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

We present an experimental study on beam combining techniques with multiple vertical external cavity surface emitting lasers (VECSELs) using volume Bragg gratings (VBGs). The specially designed holographic gratings introduce frequency specific feedback for the near infrared wavelength VECSELs to achieve both spectral linewidth narrowing and beam combination effects. For coherent addition, we obtained >3W output power with 8% slope efficiency in a coherent power scaling cavity scheme. In the multiplexed VBGs (MVBGs) wavelength beam combining compound cavity scheme, we measured >6W combined output with nearly 100% combining efficiency. Both beam combining/power scaling schemes produced spectrally narrowed and near diffraction limited outputs.

Original languageEnglish (US)
Title of host publicationVertical External Cavity Surface Emitting Lasers (VECSELs) IV
PublisherSPIE
ISBN (Print)9780819498793
DOIs
StatePublished - Jan 1 2014
EventVertical External Cavity Surface Emitting Lasers (VECSELs) IV - San Francisco, CA, United States
Duration: Feb 2 2014Feb 4 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8966
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherVertical External Cavity Surface Emitting Lasers (VECSELs) IV
CountryUnited States
CitySan Francisco, CA
Period2/2/142/4/14

Keywords

  • Beam combining
  • Holographic gratings
  • Power scaling
  • Semiconductor laser
  • VECSELs

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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  • Cite this

    Lu, C. A., Roach, W. P., Balakrishnan, G., Albrecht, A. R., Moloney, J. V., & Glebov, L. B. (2014). Beam combination of multiple vertical external cavity surface emitting lasers via volume Bragg gratings. In Vertical External Cavity Surface Emitting Lasers (VECSELs) IV [89660Y] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8966). SPIE. https://doi.org/10.1117/12.2039666