Non-collinear generation of the second optical harmonic in strontium-barium niobate crystals with needle-like microdomainsстатья
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Дата последнего поиска статьи во внешних источниках: 27 ноября 2016 г.
Аннотация:The structure of the spatial spectra from the second harmonic (SH) of yttrium-aluminum-garnet neodymium laser radiation during quasi-phase-matched generation is studied in a spatially inhomogeneous nonlinear medium. Based on the example of the formation of the strontium-barium niobate (SBN) domain structure a theoretical model that describes the angular distribution of the intensity of the noncollinear SH generated in the polydomain crystal with stochastically distributed domains is proposed. It is shown that the characteristic spatial domain sizes can be found from the second-harmonic intensities and that the density of the domain distribution is described by the Weibull-Gnedenko distribution.