31 research outputs found

    Passive Q-switching and mode-locking for the generation of nanosecond to femtosecond pulses

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    J-dependence of intensity-dependent polarization change

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    Second-harmonic generation in centro-symmetric media

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    The magnetic-dipole and elec.-quadrupole contributions to second-harmonic generation (SHG) of centro-sym. media were studied. The phenomenol. parameters a, b, g can be arranged to form an effective .hivin.cs(2)-tensor, which describes dipole-forbidden SHG as the effect of a surface layer upon excitation with a single plane electromagnetic wave. An exptl. technique is proposed allowing a detn. of the usually very small g term due to magnetic-dipole interaction using coherent compensation of its contribution by a coverage with an appropriate dye monolayer

    Raman scattering and optical susceptibilities of Nd-doped glasses

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