Diamond Raman laser in eye safe region

Helena Jelínková*, Ondřej Kitzler, Michal Jelínek, Jan Šulc, Michal Němec, Václav Kubeček

*Corresponding author for this work

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

4 Citations (Scopus)

Abstract

The goal of this work was the external cavity CVD diamond Raman laser generating at wavelength of 1.63 uμm which belongs to an eye safe region. As the Raman medium a sample of CVD grown single diamond crystal was used. The crystal was grown in the [100] direction and after cutting, the sample sides were formed by {110} planes. The diamond crystal sample dimensions were 5 mm × 5 mm × 2 mm and it had no anti-reflection coatings. As a pumping radiation source the compact Q-switched Nd:YAP laser operating at the wavelength 1.34 uμm was used. The pulse duration was 12 ns. This pumping radiation was focused by the lens (f = 250 mm) perpendicularly on the diamond crystal face. The beam radius inside the crystal was 180 uμm. The 15 mm long Raman laser resonator was formed by a pumping mirror (HR @ 1.63 uμm and T = 97 % @ 1.34 uμm) and an output coupler (R = 95 % @ 1.63 uμm, r = 500 mm). The maximum generated laser output energy was 18 uμJ @ 1.63 uμm for the pumping energy of 3.35 μJ corresponding to the conversion efficiency of 0.5 %. The output spatial beam profile corresponds to the fundamental Gaussian beam in both axes.

Original languageEnglish
Title of host publicationPhotonics, Devices, and Systems V
Subtitle of host publication24-26 August 2011, Prague, Czech Republic
EditorsPavel Tománek, Dagmar Senderáková, Petr Páta
Place of PublicationBellingham, WA
PublisherSPIE
Pages1-5
Number of pages5
ISBN (Print)9780819489531
DOIs
Publication statusPublished - 2011
Externally publishedYes
EventPhotonics, Devices, and Systems V - Prague, Czech Republic
Duration: 24 Aug 201126 Aug 2011

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume8306
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherPhotonics, Devices, and Systems V
CountryCzech Republic
CityPrague
Period24/08/1126/08/11

Keywords

  • CVD diamond
  • Diamond Raman laser
  • Eye safe wavelength
  • Nd:YAP Q-switched laser
  • Stimulated Raman Scattering

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