Difluoro antimony cesium sulfate nonlinear optical crystal and preparation method and application thereof

Abstract

The invention discloses a difluoro antimony cesium sulfate nonlinear optical crystal and a preparation method and application thereof. A room-temperature solution method is adopted for preparing the difluoro antimony cesium sulfate nonlinear optical crystal, wherein the molecular formula of the crystal belonging to an orthorhombic system is CsSbSO4F2, the molecular weight is 388.72, and the spacegroup is Pna21; the cell parameters include: a=9.9051(5) , b=11.6070(8) , c=5.2822(3) , and V=607.29(6) <3>; the nonlinear optical effect of the crystal is about 0.65KDP, the ultraviolet cut-off side is 233nm, and high rate in penetration of visible light and near infrared band is achieved. The CsSbSO4F2 crystal is transparent and free of inclusion and has advantages of high growth speed, lowcost, stable physicochemical properties, high mechanical performances, easiness in processing and the like, and the crystal is suitable for manufacturing of nonlinear optical devices such as frequencymultipliers, secondary harmonic generators, up-down frequency converters, optical parameter oscillators, laser blinding weapons, laser discs, laser projection televisions and optical computation andoptical fiber communication devices.

Description

technical field [0001] The invention belongs to the technical field of optical crystals, and in particular relates to a non-linear optical crystal of antimony cesium difluorosulfate and a preparation method and application thereof. Background technique [0002] Nonlinear optics is a branch of optics that specializes in the study of the interaction mechanism, phenomena and applications of strongly coherent light and matter. The nonlinear optical effect of crystal means that when a laser beam with a certain polarization direction passes through a nonlinear optical crystal in a certain direction, the frequency of the beam will change. When the laser propagates in a medium with non-zero second-order polarizability, nonlinear optical effects such as frequency doubling, sum frequency, difference frequency, and optical parametric amplification will occur. [0003] Crystals with nonlinear optical effects are called nonlinear optical crystals. Nonlinear optical crystal materials ha...

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Problems solved by technology

For example, the birefringence of LBO is relatively small, and the quadrupling output of 1064 nm wavelength laser cannot be realized; the birefringence of BBO is relatively large, and there is a photorefractive effect when used for quadrupling output of 1064 nm wavelength laser, which limits However, CLBO is extremely deliquescent and difficult to achieve commercial applications; KBBF is difficult to obtain due to its severe layered growth habit. c thicker crystals

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