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Keywords:

  • Raman crystal;
  • KHC6H4(COO)2 crystal;
  • (NH4)HC6H4(COO)2 crystal;
  • potassium hydrogen phthalate;
  • ammonium hydrogen phthalate;
  • many-phonon stimulated Raman scattering;
  • SRS;
  • cross-cascaded χ(3)χ(3) interaction

Abstract

Raman-induced many-phonons Stokes and anti-Stokes generation in a orthorhombic crystals KHC6H4(COO)2 and (NH4)HC6H4(COO)2 under picosecond pumping has been observed. All recorded nonlinear lasing lines in the visible and near-IR regions are identified and attributed to the χ(3)-promoting vibration modes of these orthorhombic phthalates. (© 2009 by Astro Ltd., Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA)