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  • Enhancement of second harmonic generation in helical ▫$S_c^*$▫ liquid crystals
    Čopič, Martin ; Drevenšek Olenik, Irena
    In a ferroelectric liquid crystal, a special type of phase-matching for optical second harmonic generation (SHG) is possible, where two counter-propagating fundamental waves create second harmonic ... waves at the edge of the selective reflection band. We compute the SHG intensity in such a situation and show that, at slight detuning from exact phase-matching, useful resonance enhancement can be obtained. A considerable amount of SHG also appears when the second harmonic frequency is in the reflection band, where the SHG wave is non-propagating.
    Vir: Liquid crystals. - ISSN 0267-8292 (21, 1996, str. 233-236)
    Vrsta gradiva - članek, sestavni del
    Leto - 1996
    Jezik - angleški
    COBISS.SI-ID - 371556

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