14 µm continuous-wave diamond Raman laser

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Abstract
The longest wavelength (~1.4 µm) emitted by a diamond Raman laser pumped by a semiconductor disk laser (SDL) is reported. The output power of the intracavity-pumped Raman laser reached a maximum of 2.3 W with an optical conversion efficiency of 3.4% with respect to the absorbed diode pump power. Narrow Stokes emission (FWHM 40 nm was achieved via rotation of an intracavity birefringent filter that tuned the SDL oscillation wavelength.
Funding Information
  • Research Council of Finland (278338)
  • Engineering and Physical Sciences Research Council (EPSRC) (EP/I022791/1)
  • Fraunhofer UK Limited
  • H2020 European Research Council (ERC) (278389)
  • Tekes (40016/14)

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