We report on the first observation of the nonlinear cascading χ (3) ↔ χ (3) effects in UV spectral range and second harmonic generation stipulated by the ``defect'' nonlinearity under one-micron pumping in crystalline ceramics based on cubic oxides Sc 2 O 3 and Lu 2 O 3 . Broadband their multi-wavelength Stokes and anti-Stokes combs with the extension of 10475 cm -1 (for Sc 2 O 3 ) and 8232 cm -1 (for Lu 2 O 3 ) were recorded as well.
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Каминский et al. (2007) studied this question.
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