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Strontium-doped barium borate ultraviolet double-refraction crystal and growing technology thereof

A birefringent crystal, barium strontium borate technology, applied in the directions of crystal growth, single crystal growth, single crystal growth, etc., can solve the problems of inability to meet high-performance optical components, crystal integrity limitations, easy cracking, etc.

Inactive Publication Date: 2010-09-15
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

However, barium borate and calcite also have problems in practical applications: calcite has cleavage planes, which are easy to crack during processing, which limits the integrity of the crystal and cannot meet the requirements of high-performance optical components.

Method used

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  • Strontium-doped barium borate ultraviolet double-refraction crystal and growing technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: Growth of Ba by pulling method 0.95 Sr 0.05 B 2 o 4 crystals.

[0016] Raw material according to BaCO 3 : SrCO 3 :H 3 BO 3 =0.95:0.05:2mol proportioning is accurately weighed, then mixed and ground evenly, after tableting, put in In a platinum crucible, the solid-state reaction was carried out in a muffle furnace at 500°C for 12 hours; after taking it out, the tablet was reground and then heated to 800°C for 24 hours. Put the synthesized above samples into a platinum crucible, and use the pulling method to grow a The size is 25×20×20mm 3 of high quality Ba 0.95 Sr 0.05 B 2 o 4 crystals.

Embodiment 2

[0017] Example 2: Growth of Ba by pulling method 0.90 Sr 0.1 B 2 o 4 the crystal

[0018] Raw material according to BaCO 3 : SrCO 3 :H 3 BO 3 =0.9:0.1:2mol proportioning is accurately weighed, then mixed and ground evenly, after tableting, put in In a platinum crucible, the solid-state reaction was carried out in a muffle furnace at 500°C for 12 hours; after taking it out, the tablet was reground and then heated to 800°C for 24 hours. Put the synthesized above samples into a platinum crucible, and use the pulling method to grow a The size is 25×20×20mm 3 of high quality Ba 0.9 Sr 0.1 B 2 o 4 crystals.

Embodiment 3

[0019] Example 3: Growth of Ba by pulling method 0.85 Sr 0.15 B 2 o 4 the crystal

[0020] Raw material according to BaCO 3 : SrCO 3 :H 3 BO 3 =0.85:0.15:2mol proportioning is accurately weighed, then mixed and ground evenly, after tableting, put in In a platinum crucible, the solid-state reaction was carried out in a muffle furnace at 500°C for 12 hours; after taking it out, the tablet was reground and then heated to 800°C for 24 hours. Put the synthesized above samples into a platinum crucible, and use the pulling method to grow a A high-quality Ba with a size of 25×20×20mm3 0.85 Sr 0.15 B 2 o 4 crystals.

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Abstract

The invention relates to a strontium-doped barium borate ultraviolet double-refraction crystal and a preparation method thereof. The crystal has a molecular formula of Ba1-xSrxB2O4 (x=0.001- 0.23) and belongs to a trigonal system. The cell parameters of the space group R3c and Ba0.9Sr0.1B2O4 are within the transmission range of 190 to 3500 nm, the transmission rate of ultraviolet band reaches 90%, and the double refraction rate of the wavelength 533nm is: ne=1.5379, n0=1.6619, and the crystal can be used as ultraviolet double refraction crystal. The crystal is grown by using pulling method. The crystal can be widely used for Glan-Taylor and Glan-laser polarizers, especially for high-power ultraviolet polarizers.

Description

technical field [0001] The invention relates to a crystal material as an ultraviolet birefringent optical device. Background technique [0002] Crystal birefringence is an important optical performance parameter of electro-optic functional materials. Birefringent crystal materials are widely used, mainly used in: (1) fiber optic isolator (ISOLATOR) in optical communication; (2) circulator (CIRCULATOR); (3) beam displacement (BEAM DISPLACER); 4 Glan prism and polarization optics. [0003] The existing birefringent materials mainly include: BBO, YVO 4 ,TiO 2 , CaCO 3 and LiNbO 3 and other crystals. Only barium borate (BaB 2 o 4 ) and calcite (CaCO 3 ) can pass through the ultraviolet region, and other crystals are not transparent in ultraviolet. However, barium borate and calcite also have problems in practical applications: calcite has cleavage planes, which are easy to crack during processing, which limits the integrity of the crystal and cannot meet the requiremen...

Claims

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Application Information

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IPC IPC(8): C30B29/22C30B15/00G02B1/02
Inventor 王国富吴少凡谢建凌张莉珍王国建
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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