Abstract
We demonstrate the second harmonic generation (SHG) in ferroelectric AgNa(NO2)2 crystals resulting from the spontaneous and electric field induced polarizations. Relatively high effective nonlinear optic (NLO) susceptibility is combined in this crystals with the existing several phase matching geometries of NLO interaction. Anomalously large response of SHG with respect to an applied electric field has been found in the vicinity of the paraelectric-to-ferroelectric phase transition. The behavior of NLO properties in the ferroelectric phase and especially in the region of the Curie point is discussed within the phenomenological theory.
Highlights
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not
Ferroelectric materials are considered as very promising materials for a number of applications being usually related to their large nonlinear response with respect to the electromagnetic radiation in the optical range
In this letter we demonstrate the quadratic optical nonlinearity resulting from spontaneous and electric field induced polarizations in silver sodium nitrideAgNaNO2͒2, hereafter SSNcrystals
Summary
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. Spontaneous and electric field induced quadratic optical nonlinearity in ferroelectric crystals AgNa„NO2...2 In this letter we demonstrate the quadratic optical nonlinearity resulting from spontaneous and electric field induced polarizations in silver sodium nitrideAgNaNO2͒2, hereafter SSNcrystals.
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