Compound cesium fluoborate, nonlinear optical crystal with cesium fluoborate, methods for preparing compound cesium fluoborate and nonlinear optical crystal and application of compound cesium fluoborate and nonlinear optical crystal

Abstract

The invention provides a compound cesium fluoborate, a nonlinear optical crystal with the cesium fluoborate, methods for preparing the compound cesium fluoborate and the nonlinear optical crystal and application of the compound cesium fluoborate and the nonlinear optical crystal. A chemical formula of the compound is CsB<4>O<6>F, the molecular weight of the compound is 291.15, and the compound is of a crystal structure and is prepared by the aid of solid-phase synthesis processes or vacuum packaging processes. A chemical formula of the nonlinear optical crystal is CsB<4>O<6>F, the molecular weight of the nonlinear optical crystal is 291.15, the nonlinear optical crystal belongs to orthorhombic crystal systems, space groups of the nonlinear optical crystal are Pna2<1>, crystal cell parameters of the nonlinear optical crystal include that an a is equal to 7.9241 , a b is equal to 11.3996 , a c is equal to 6.6638 and an alpha, a beta and a gamma are equal to 90 degrees, and the unit cell volumes of the nonlinear optical crystal are 601.95 <3>. Frequency doubling effects of the nonlinear optical crystal is approximately two times frequency doubling effects of KH<2>PO<4> [KDP (potassium dihydrogen phosphate)], and ultrasonic absorption edges of the nonlinear optical crystal are shorter than 190 nm. The nonlinear optical crystal is grown from the CsB<4>O<6>F by the aid of melt processes, high-temperature solution processes, vacuum packaging processes, hydrothermal processes or room-temperature solution processes. The compound cesium fluoborate, the nonlinear optical crystal, the methods and the application have the advantages that the nonlinear optical crystal is free of deliquescence in air, is good in chemical stability and can be applied to all-solid-state laser devices as an ultraviolet nonlinear optical crystal or deep ultraviolet nonlinear optical crystal.

Description

technical field [0001] The invention relates to a compound cesium fluoroborate CsB 4 o 6 F and cesium fluoroborate CsB 4 o 6 F nonlinear optical crystal and its preparation method and application. Background technique [0002] As an important part of all-solid-state lasers, nonlinear optical crystals have been widely concerned by scholars at home and abroad. After half a century of research, a series of nonlinear optical crystals with excellent performance have been discovered. The representative nonlinear optical crystal in the visible light band is KTiOPO 4 (KTP), KH 2 PO 4 (KDP) and so on. In the ultraviolet band, the nonlinear optical crystal LiB that has been industrialized 3 o 5 (LBO), CsB 3 o 5 (CBO), CsLiB 6 o 10 (CLBO) and BaB 2 o 4 (BBO) etc. But in the deep ultraviolet band below 200nm, the practical nonlinear optical crystal is only KBe 2 BO 3 f 2 (KBBF). Due to the long growth period of the crystal, the presence of highly toxic Be elements, a...

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Problems solved by technology

Due to the long growth period of the crystal, the presence of highly toxic Be elements, and the layered growth habit, its application is limited to a certain extent.

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