We report the experimental investigation of nonlinear cascaded lasing ?(3) ? ?(2) effects in UV and visible ranges and high-order Stokes and anti-Stokes generation covering spectral space of about 18000 cm-1 by stimulated Raman scattering and multi-wave mixing processes under one-micron picosecond pumping in the paraelectric state of NH1H2PO4 and ND4D2PO4 single crystals. All recorded Raman induced laser wavelengths are identified and attributed to their SRS-promoting vibration modes. Brief review of nonlinear-laser processes in non-centrosymmetric phosphates of KH2PO4-family and some physical properties of NH4H2PO4 and ND4D2PO4 are given as well. A figure is presented. Plot of the crystal structure of NH4H2PO4 © 2008 by Astro Ltd. Published exclusively by Wiley-VCH Verlag GmbH & Co. KGaA.
- NH 4 H 2 PO 4 (ADP) and ND 4 D 2 PO 4 (DADP) crystals
- Nonlinear-laser cascaded effects
- Raman crystal
- Stimulated Raman scattering
- Stokes and anti-Stokes comb generation