Intracavity diode-side-pumped Raman laser at 1147 nm and 1163 nm

Merilyn S. Ferreira, Helen M. Pask, Niklaus U. Wetter

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

2 Citations (Scopus)
20 Downloads (Pure)

Abstract

Wavelengths in the yellow-orange range are of significant interest due to their application potential in the medical and biomedical areas, as well as for applications in laser displays and in remote sensing. These wavelengths can be obtained by frequency-doubling or sum-frequency generation of lasers with near-IR emission like VCSELS, fiber lasers, and OPOs. However, all these alternatives have several limitations that justify the development of alternative methods. As a possible solution for these limitations, a configuration of an intracavity converted Raman laser may be developed to obtain two wavelengths, 1163 nm, and 1147 nm, with high efficiency and good beam quality. This paper presents a configuration of a side-pumped intracavity converted Raman laser to achieve these objectives. A Nd:YLiF4 crystal was used as fundamental wavelength gain crystal. The side-pumped configuration guarantees practicability and cost reduction while allowing good efficiency and fundamental mode laser beam. The intracavity conversion configuration allows high fundamental wavelength power at the Stokes crystal in order to facilitate the obtention of the Stokes wavelengths and enables optimization of its efficiency. As a result an output power at 1163 nm of 3.8 W in the multimode regime was obtained, corresponding to a pump to Stokes efficiency of 9.6%. The TEM00 diode to Stokes efficiency was 7%. For the emission at 1147 nm, 1.5W of output power with a diode to Stokes efficiency of 3.7% was achieved. The side-pumped Nd:YLF/KGW intracavity Raman laser configuration is reported for the first time, to our knowledge.

Original languageEnglish
Title of host publicationLaser Resonators, Microresonators, and Beam Control XX
EditorsAlexis V. Kudryashov, Alan H. Paxton, Vladimir S. Ilchenko
Place of PublicationBellingham, Washington
PublisherSPIE
Pages1-9
Number of pages9
ISBN (Electronic)9781510615229
ISBN (Print)9781510615212
DOIs
Publication statusPublished - 16 Feb 2018
Event20th Conference on Laser Resonators, Microresonators and Beam Control - San Francisco, United States
Duration: 29 Jan 20181 Feb 2018

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume10518
ISSN (Print)0277-786x
ISSN (Electronic)1996-765x

Conference

Conference20th Conference on Laser Resonators, Microresonators and Beam Control
CountryUnited States
CitySan Francisco
Period29/01/181/02/18

Bibliographical note

Copyright 2018 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Keywords

  • diode pumped lasers
  • intracavity Raman lasers
  • near-IR lasers
  • Raman lasers
  • side-pumped lasers

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