A Raman-active crystal, lanthanum tungstate doped with praseodymium (Pr) ions, was grown to facilitate the selection of the order of Stokes waves in stimulated Raman scattering. Absorption of the second Stokes wave by the Pr ions suppressed conversion to higher-order Stokes waves, resulting in efficient energy conversion to the first Stokes wave.
© 2000 Optical Society of America
(160.4330) Materials : Nonlinear optical materials
(190.2620) Nonlinear optics : Harmonic generation and mixing
(230.4320) Optical devices : Nonlinear optical devices
(290.5910) Scattering : Scattering, stimulated Raman
Yoshiharu Urata, Satoshi Wada, Hideo Tashiro, and Tsuguo Fukuda, "Doping of an absorbent into a Raman crystal for suppression of higher-order Stokes generation," Opt. Lett. 25, 752-754 (2000)