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Tunable continuous-wave diamond Raman laser

Parrotta, Daniele Carmine and Kemp, Alan and Dawson, Martin and Hastie, Jennifer (2011) Tunable continuous-wave diamond Raman laser. Optics Express, 19 (24). pp. 24165-24170. ISSN 1094-4087

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Abstract

Continuous-wave operation of a diamond Raman laser, intracavity-pumped by a diode-pumped InGaAs semiconductor disk laser (SDL), is reported. The Raman laser, which utilized a 6.5-mm-long synthetic single-crystal diamond, reached threshold for 5.3 W of diode laser pump power absorbed by the SDL. Output power up to 1.3 W at the first Stokes wavelength of 1227 nm was demonstrated with excellent beam quality and optical conversion efficiency of 14.4% with respect to absorbed diode laser pump power. Broad tuning of the Raman laser output between 1217 and 1244 nm was achieved via intracavity tuning of the SDL oscillation wavelength.