A second-Stokes Raman laser based on PbWO<sub>4</sub> with a 1.316-μm wavelength pumped by an ≈120-ps Nd:YAG laser at 1.06415μm scattered at 901 cm<sup>-1</sup> phonon was developed. High-reflection mirrors for the Stokes wavelength were used. The maximum output energy was 0.85 mJ.The conversion efficiency increased with crystal length of 40–100 mm up to 30%. The spatial beam profile was smooth, and the Raman laser emission lasted for ~18 ns . New stimulated Raman scattering lines from a phonon at 323 cm<sup>-1</sup> were observed.
© 2003 Optical Society of America
Gad M. A. Gad, Hans J. Eichler, and Alexander A. Kaminskii, "Highly efficient 1.3-μm second-Stokes PbWO 4 Raman laser," Opt. Lett. 28, 426-428 (2003)