Abstract
Exciting a hexagonal CdSe crystal with picosecond Nd: glass laser pulses, two-photon absorption and resonant non-phase-matched second-harmonic generation occur simultaneously. Using different crystal orientations, all components of the secondharmonic susceptibility tensor (non-vanishing components ared 31,d 33 andd 15) and some components of the two-photon absorption susceptibility tensor χ (3)′′ ijkl (−ωL; ωL, ωL, −ωL) are determined.
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