Stimulated Raman Scattering in Pb(MoO4)1?x(WO4)x with x = 0, 0.5, 0.8 and 1.0 with Combined Frequency Shifts on High- and Low-Frequency Raman Modes under Synchronous Picosecond Laser Pumping

Comparative characteristics of spontaneous and stimulated Raman scattering in Pb(MoO4)1?x(WO4)x single crystals (x = 0, 0.5, 0.8, 1.0) including both the high (?1) low (?2) frequency internal anionic group vibrations have been investigated. It was found that among these crystals, Pb(MoO4)0.2(WO4)0.8 is most suitable for multi-wavelength laser several modes simultaneously. This caused by optimal relative Mo/W content corresponding to efficient coherent combination (MoO4)2? (WO4)2? enhancing output radiation synchronously pumped laser. Oscillation up twelve, closely spaced SRS components a range 1128–1360 nm strongest pulse shortening down 1.16 ps comparison with not only PbMoO4 PbWO4 but also all earlier investigated nominally pure scheelite-like tungstate molybdate has achieved.