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Method of preparing second-order non-linear optical materials, and uses thereof

A second-order nonlinear and optical crystal technology, applied in the fields of materials science and inorganic chemistry, can solve the problems of no ideal method for large-size single crystals, difficulty in obtaining pure products, and limited material applications, etc., to achieve mild conditions and high product purity , the effect of simple operation

Inactive Publication Date: 2008-06-11
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since sulfur is in CS 2 The solubility in is very low, so the reaction is mainly carried out on the solid-liquid two-phase interface, and the obtained product is often mixed with a large amount of impurities, and it is difficult to obtain a product with relatively high purity; moreover, due to the habit of the substance itself, the single growth The crystal is often acicular [W.S.Fernando, J.Inorg.Nucl.Chem., 1981, 43: 1141], which seriously limits the application of the material, and there is no ideal method for growing large-sized single crystals of the material

Method used

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  • Method of preparing second-order non-linear optical materials, and uses thereof
  • Method of preparing second-order non-linear optical materials, and uses thereof
  • Method of preparing second-order non-linear optical materials, and uses thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Preparation of second-order nonlinear optical crystal materials:

[0032] 1) 1.5748 grams of iodoform (40 mmol) and 1.066 grams of sulfur powder (0.12 moles) are placed in a polytetrafluoroethylene reactor (about 20 milliliters in volume) with a stainless steel jacket, and about 12 milliliters (can be 13 . (could be 20, 22, 26, 28, 32, 35 hours). Cool down naturally, filter quickly, and rinse the filter cake with a large amount of carbon disulfide solvent to obtain a large amount of purple-red solution, which is the carbon disulfide solution of the second-order nonlinear optical crystal material.

[0033] 2) Put the obtained carbon disulfide solution of the second-order nonlinear optical crystal material in a round-bottomed flask (can be a container such as a flat-bottomed flask, an Erlenmeyer flask), connect a drying tube to the mouth of the bottle, and place it at 10°C (can be 11 , 12, 13, 14, 15°C) in a constant temperature water tank, let it stand still, let the s...

Embodiment 2

[0035] Preparation of second-order nonlinear optical crystal materials:

[0036] 1) 1.5748 grams of iodoform (40 mmoles) and 1.244 grams of sulfur powder (0.14 moles) are placed in a polytetrafluoroethylene reactor (about 20 milliliters in volume) with a stainless steel jacket, and about 12 milliliters (can be 13 . (could be 20, 22, 26, 28, 32, 35 hours). Cool down naturally, filter quickly, and rinse the filter cake with a large amount of carbon disulfide solvent to obtain a large amount of purple-red solution, which is the carbon disulfide solution of the second-order nonlinear optical crystal material.

[0037]2) Put the obtained carbon disulfide solution of the second-order nonlinear optical crystal material in a round-bottomed flask (can be a container such as a flat-bottomed flask, an Erlenmeyer flask), connect a drying tube to the mouth of the bottle, and place it at 10°C (can be 11 , 12, 13, 14, 15°C) in a constant temperature water tank, let it stand still, let the ...

Embodiment 3

[0039] Preparation of second-order nonlinear optical crystal materials:

[0040] 1) 1.5748 grams of iodoform (40 mmol) and 1.421 grams of sulfur powder (0.16 moles) are placed in a polytetrafluoroethylene reactor (about 20 milliliters in volume) with a stainless steel jacket, and about 12 milliliters (which can be 1 3, 14, 15, 16 milliliters) of carbon disulfide, sealed with a stainless steel jacket, put into a hydrothermal reactor, and react at a constant temperature of 65°C (60, 62, 68, 70, 72, 75, 78, and 80°C) for 30 Hours (could be 20, 22, 26, 28, 32, 35 hours). Cool down naturally, filter quickly, and rinse the filter cake with a large amount of carbon disulfide solvent to obtain a large amount of purple-red solution, which is the carbon disulfide solution of the second-order nonlinear optical crystal material.

[0041] 2) Put the obtained carbon disulfide solution of the second-order nonlinear optical crystal material in a round-bottomed flask (can be a container such ...

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Abstract

This invention discloses a method for preparing a second-order nonlinear optical crystalline material, which comprises the steps of: mixing iodoform, sulfur powder and solvent carbon bisulfide in an airtight reactor, reacting at 60-80 deg.C for 20-35 h to obtain a solution of the second-order nonlinear optical crystalline material in carbon bisulfide, adding the solution into a glass container, and placing the glass container in a constant temperature cabinet for a certain time to obtain orange bulk single crystals. The method has such advantages as short reaction time, moderate experimental conditions, high product purity and simple operation. The crystalline material can be widely applied in optical field.

Description

technical field [0001] The invention belongs to the field of inorganic chemistry, and also belongs to the field of material science and optics. It relates to a preparation method of an inorganic second-order nonlinear optical crystal material, and also relates to the application of the crystal material in terahertz waves. 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 parametric amplification will occur. Terahertz waves are usually defined as frequencies from 0.1-10 terahertz (10 12 the s -1 ) electromagnetic waves within the range. The central area of ​​research is mainly in the range of 0.3 to 3 terahertz. Tai is a transliteration of Tera, so terahertz electromagnetic waves are also called T-rays, which belong to the category of fa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B7/00C30B7/10C30B7/06C30B29/54
CPCC30B7/00
Inventor 苏旭田艳秦金贵赵国忠张刚刘涛陈创天吴以成
Owner WUHAN UNIV
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