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Mid-infrared nonlinear optical crystalline materials, preparation method therefor and application of mid-infrared nonlinear optical crystalline materials

A technology of nonlinear optics and crystal materials, applied in nonlinear optics, polycrystalline material growth, chemical instruments and methods, etc., can solve the problems of limited application range, low laser damage threshold, narrow band gap, etc., and achieve high product purity , high laser damage threshold, air stabilization effect

Active Publication Date: 2019-05-03
HUBEI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this type of material often has a low laser damage threshold due to its semiconductor characteristics and narrow band gap, which seriously limits their application range.

Method used

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  • Mid-infrared nonlinear optical crystalline materials, preparation method therefor and application of mid-infrared nonlinear optical crystalline materials
  • Mid-infrared nonlinear optical crystalline materials, preparation method therefor and application of mid-infrared nonlinear optical crystalline materials
  • Mid-infrared nonlinear optical crystalline materials, preparation method therefor and application of mid-infrared nonlinear optical crystalline materials

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Embodiment 1

[0032] The preparation method of the mid-infrared nonlinear optical crystal material of the present embodiment, the chemical formula of the mid-infrared nonlinear optical crystal material is RbCdI 3 ·H 2 O and CsCdI 3 ·H 2 O, RbBr(CsBr) and CdI in a molar ratio of 1:1 2 Soluble in a mixed solution of acetone and water, the volume ratio of acetone and water in the mixed solution is 8:1, after dissolving, it will be heated to 30°C, stirred and reacted for 2 hours to obtain a colorless transparent solution, which is left standing at room temperature, After the acetone is volatilized, wash and dry with a mixed solution of acetone and water to obtain colorless and transparent rod-shaped crystals, which are the two nonlinear optical crystal materials.

[0033] In the mid-infrared nonlinear optical crystal material of the present embodiment, their crystal space groups are all Pc, RbCdI 3 ·H 2 The unit cell parameters of O are: a = 8.7482(18)Å, b = 7.4018(15)Å, c = 14.741(3)Å, α ...

Embodiment 2

[0046] The application of the nonlinear optical crystal material of this embodiment in the optical field can be applied in the two important atmospheric windows of the mid-infrared band of 3-5 μm and 8-12 μm, and can be applied in national defense, military, civilian, etc., mainly for Optical information storage, laser communication, laser countermeasures and other fields.

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Abstract

The invention discloses mid-infrared nonlinear optical crystalline materials, a preparation method therefor and an application of the mid-infrared nonlinear optical crystalline materials. Chemical formulae of the mid-infrared nonlinear optical crystalline materials comprise RbCdI3.H2O and CsCdI3.H2O, and both crystal space groups of the chemical formulae are Pc. During preparation, the two kinds of nonlinear optical crystalline materials, i.e., RbCdI3.H2O and CsCdI3.H2O can be obtained through dissolving RbBr(CsBr) and CdI2 in a mixed solution of acetone and water and carrying out preparing byadopting a solution method. The two kinds of nonlinear optical crystalline materials disclosed by the invention have a relatively high phase-matchable second-order nonlinear optical effect, have relatively wide light transmitting windows in a visible light zone and an infrared light zone and have the advantages that the laser damage threshold is relatively high, the synthesis method is simple inoperation, the experimental conditions are moderate, the product purity is high, the nonlinear optical crystalline materials are stable to air, and the like, thereby being capable of being extensivelyapplied to the field of optics.

Description

technical field [0001] The invention relates to the technical field of inorganic chemical materials, in particular to a mid-infrared nonlinear optical crystal material and its preparation method and application. Background technique [0002] Nonlinear optical effects originate from the interaction between laser and medium. 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. Using the second-order nonlinear optical effect of crystals, nonlinear optical devices such as second harmonic generators, frequency converters, and optical parametric oscillators can be made. In many fields, such as laser technology, atmospheric monitoring, national defense and military, etc., All have important application value. Inorganic nonlinear optical materials play a dominant role in the practical research of second-order nonlin...

Claims

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Application Information

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IPC IPC(8): C30B29/12C30B7/14G02F1/355
Inventor 吴奇刘贤
Owner HUBEI NORMAL UNIV
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