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Optica Publishing Group
  • CLEO/Europe and EQEC 2011 Conference Digest
  • OSA Technical Digest (CD) (Optica Publishing Group, 2011),
  • paper CD_P22

Quasi-Continuous-Wave Intracavity KGW Raman Laser: Generation at Different Wavelengths

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Abstract

Stimulated Raman Scattering (SRS) is a widely used method for frequency conversion of laser radiation. Potassium gadolinium tungstate (KGW) crystal is one of the promising solid-state Raman-active media. The first diode pumped continuous-wave laser with intracavity Raman conversion was demonstrated with this crystal [1]. KGW possesses 767 cm−1 and 901 cm−1 Raman shifts having the highest Raman gain. In the b-cut KGW crystal, for the radiation polarized parallel to Nm axis of Fresnel ellipsoid and passing along the Np axis the Raman frequency ωR equals 901 cm−1. For the radiation polarized along the Ng the scattering spectra is richer, the 767 cm−1 mode possessing the highest Raman gain. We present KGW quasi-continuous-wave end-diode-pumped intracavity Raman laser operating at 1159- and 1177 nm lines, which correspond to 767 cm−1 and 901 cm−1 shifts, respectively. The lines at 1074 nm and 1171 nm (ωR = 86 cm−1) were also observed.

© 2011 Optical Society of America

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