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Nonlinear optical crystal rubidium borogermanate

A technology of nonlinear optics and rubidium borate germanate, which is applied in the field of nonlinear optical materials and their synthesis, and can solve problems such as unfavorable applications

Inactive Publication Date: 2011-06-15
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recent studies have shown that if two of the above-mentioned active groups can be introduced into the same compound, through the superposition of their polarization, it is possible to obtain nonlinear optical materials with better performance, such as Na 2 TeW 2 o 9 , BaTeM 2 o 9 (M=Mo 6+ , W 6+ ), Se 2 (B 2 o 7 ) and BaNbO(IO 3 ) 6 etc. So far, there are few reports on metal borogermanic acid compounds, but they are easy to form various non-central structures, and have broad application prospects in nonlinear optical materials and porous materials.
Most boorgermanates are synthesized under hydrothermal conditions, and their structures often contain water or organic templates, which is not conducive to practical applications

Method used

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  • Nonlinear optical crystal rubidium borogermanate
  • Nonlinear optical crystal rubidium borogermanate

Examples

Experimental program
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Effect test

example 1

[0007] Example 1: H 3 BO 3 (0.1854g, 0.3mol), GeO 2 (0.1046g, 0.1mol) with Rb 2 CO 3 (0.1155g, 0.05mol) after grinding evenly, put it into a platinum crucible for compaction, put it in a muffle furnace, react at 300°C for 2 hours, then raise the temperature, react at 700°C for 7 days, and then heat it at 0.6°C per hour Decrease to 450°C, and finally lower to 250°C at 2°C per hour, take it out, soak in distilled water for 5 hours, and filter to obtain colorless and transparent block crystals.

example 2

[0008] Example 2: H 3 BO 3 (0.1854g, 0.3mol), GeO 2 (0.1046g, 0.1mol) with Rb 2 CO 3 (0.1155g, 0.05mol) after grinding evenly, put it into a platinum crucible for compaction, put it in a muffle furnace, react at 300°C for 2 hours, then raise the temperature, react at 650°C for 7 days, and then heat it at 5°C per hour When the temperature is lowered to 250°C, a white powder with a yield of 100% can be obtained.

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Abstract

The invention relates to a nonlinear optical crystal rubidium borogermanate, and belongs to a nonlinear optical material and synthesis thereof. The crystal has a chemical formula RbGeB3O7 and the molecular weight of 302.51, belongs to an orthorhombic system, has a space group Pna21 and is prepared by a high-temperature solid phase method, and unit-cell parameters are that: alpha=90 degrees, beta=90 degrees, gamma=90 degrees, and Z=4. The rubidium borogermanate (RbGeB3O7) has high nonlinear optical property, and the second harmonic generation (SHG) coefficient of rubidium borogermanate powder is 1.3 times that of potassium dihydrogen phosphate (KDP).

Description

technical field [0001] The invention belongs to nonlinear optical material and its synthesis. Background technique [0002] Nonlinear optical crystals, with frequency doubling effect (SHG), have important application value in high-tech fields such as laser frequency conversion, electro-optical modulation, and photorefractive information processing. Nonlinear optical materials are used in modern science and technology, especially in several military and civilian high-tech fields, such as submarine deep-water communication, laser blinding weapons, marine fish detection, optical disc recording, color laser printing, laser projection TV, optical computing and Optical fiber communication, etc., have a series of important applications. The nonlinear optical crystals currently used in practice include LiB 3 o 5 (LBO), β-BaB 2 o 4 (BBO), KH 2 PO 4 (KDP), KTiOPO 4 (KTP), LiNbO 3 (LNO) and BaTiO 3 (BTO) and so on. In general, the design of nonlinear optical materials are: p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/355
Inventor 毛江高张建汉
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI