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Method for preparing large chlorine barium borate nonlinear optic crystal and application thereof

A technology of nonlinear optics and barium chloroborate, which is applied in the field of preparation of large-size barium chloroborate nonlinear optical crystals, can solve the problem of difficulty in obtaining large-size high-quality single crystals, the absence of barium chloroborate single crystals, and difficulties in crystal growth, etc. question

Inactive Publication Date: 2011-03-09
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main nonlinear optical materials used in blue-green band frequency conversion are: KDP series, KTP (KTiOPO 4 ) series, BBO (β-BBO), LBO (LiB 3 o 5 ), KBBF (KBe 2 BO 3 f 2 ), SBBO (Sr 2 be 2 B 2 o 7 ), CBO (CsB 3 o 5 ), CLBO (CsLiB 6 o 10 ), etc., but the above crystals still have their own shortcomings: such as difficult crystal growth, difficulty in obtaining large-size high-quality single crystals, deliquescent crystals, long growth cycle, serious layered growth habit, expensive price, etc.
[0005] In 2002, German scientists P.held and J.Liebertz reported Ba 2 B 5 o 9 The structure of Cl indicates that the crystal belongs to the orthorhombic crystal system, the space group is Pnn2(NO.34), and the unit cell parameter is a=11.576(2) b=11.619(2) c=6.6874(13) Z=4, but to carry out research on the basic physical properties (comprising nonlinear optical performance) of a kind of crystal, need the size of this crystal reach millimeter even centimeter level, have not seen so far relevant preparation size enough for the chloroboric acid that physical property test is used Barium single crystal, and there is no report about the nonlinear optical performance test of barium chloroborate single crystal or the report of fabricating nonlinear optical devices with barium chloroborate single crystal

Method used

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  • Method for preparing large chlorine barium borate nonlinear optic crystal and application thereof
  • Method for preparing large chlorine barium borate nonlinear optic crystal and application thereof
  • Method for preparing large chlorine barium borate nonlinear optic crystal and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take reaction formula (1) as an example, but not limited to reaction formula (1).

[0032] Using high temperature solid phase method to react BaO+H 3 BO 3 +BaCl 2 ·2H 2 O→Ba 2 B 5 O 9 Cl+H 2 O↑ synthetic barium chloroborate (Ba 2 B 5 O 9 Cl) Compound;

[0033] Put BaO, H 3 BO 3 , BaCl 2 ·2H 2 O was put into a mortar at a stoichiometric ratio of 1.5:5:0.5, mixed and ground carefully, then put into an open corundum crucible of Φ200mm×200mm, compacted, put into a muffle furnace, and slowly heated to 500℃ After cooling for 10 hours, take out the crucible, take out the sample and grind it evenly, then put it in the crucible, keep it at 780℃ in the muffle furnace for 72 hours, take it out, put it in a mortar and grind to obtain the barium chloroborate compound. Perform X-ray analysis on the product, and the obtained X-ray spectrum is consistent with the X-ray spectrum of barium chloroborate single crystal ground into powder;

[0034] a. Combine the synthesized barium chloroborate c...

Embodiment 2

[0041] Take reaction formula (2) as an example, but not limited to reaction formula (2).

[0042] Using high temperature solid phase method to react BaCO 3 +H 3 BO 3 +BaCl 2 ·2H 2 O→Ba 2 B 5 O 9 Cl+H 2 O↑+CO 2 ↑Synthetic Ba 2 B 5 O 9 Cl compound, the specific operation steps were carried out according to Example 1;

[0043] Will be synthesized Ba 2 B 5 O 9 Cl compound and flux NaF and H 3 BO 3 Mix according to the ratio of the amount of the substance to 1:2:1, put it into an open platinum crucible of Φ80mm×80mm, raise the temperature to 950°C, keep the temperature for 40 hours, and then lower the temperature to 880°C to obtain a mixture of barium chloroborate and flux Solution

[0044] The seed crystal obtained in step b of Example 1 was tied to the lower end of the seed rod with platinum wire, and the seed crystal was introduced from the small hole on the top of the furnace to a distance of about 1-2 cm from the crucible, kept at a constant temperature for 15 minutes, and then immer...

Embodiment 3

[0048] Take reaction formula (3) as an example, but not limited to reaction formula (3).

[0049] High temperature solid phase method is used to react Ba(NO 3 ) 2 +H 3 BO 3 +BaCl 2 ·2H 2 O→Ba 2 B 5 O 9 Cl+NO 2 ↑+H 2 O↑ Synthetic Ba 2 B 5 O 9 Cl compound, the specific operation steps were carried out according to Example 1;

[0050] Will be synthesized Ba 2 B 5 O 9 Cl compound and flux NaF and H 3 BO 3 Mix according to the ratio of the amount of the substance to 1:6:3, put it into an open platinum crucible of Φ80mm×80mm, raise the temperature to 880°C, keep the temperature for 60 hours and then lower the temperature to 845°C to obtain a mixture of barium chloroborate and flux Solution

[0051] The seed crystal obtained in step b of Example 1 was tied to the lower end of the seed rod with platinum wire, and the seed crystal was introduced into the crucible from the small hole on the top of the furnace about 1 to 2 cm away from the crucible, kept at a constant temperature for 20 minutes...

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Abstract

The invention relates to a method for preparing a large chlorine barium borate nonlinear optic crystal and applications thereof. The molecular formula of the crystal is Ba2B5O9Cl. A high-temperature solution method is used, and a fluxing agent is used for cultivating the crystal. The ultraviolet edge of the crystal is less than 230 nm, and the nonlinear optical effect of the crystal is about 6 times higher than that of KDP (KH2PO4). The crystal has the characteristics of good frequency doubling effect, high mechanical strength, easy processing, no deliquescence and the like and has the advantages of rapid preparation, simple operation, low cost, large size and the like. The crystal is suitable for producing nonlinear optical devices and can be widely applied to nonlinear optical devices, such as frequency doubling converters, optical parametric oscillators and the like.

Description

Technical field [0001] The invention relates to a preparation method and application of a large-size barium chloroborate nonlinear optical crystal, in particular to the nonlinear optical crystal using a high-temperature solution method to grow a large-size crystal. Background technique [0002] In modern laser technology, the laser wavelength that can be obtained by directly using laser crystals is very limited, and there is still a blank band from the ultraviolet to the infrared spectrum. The all-solid-state blue-green laser system can be realized by generating near-infrared laser from a solid-state laser and then performing frequency conversion through a nonlinear optical crystal. It has important application prospects in various high-tech fields such as laser printing, optical data storage, and full-color display. [0003] Non-linear optical crystals have attracted much attention because they can effectively broaden the wavelength range of lasers. The main nonlinear optical mat...

Claims

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Application Information

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IPC IPC(8): C30B29/10C30B7/08
Inventor 潘世烈陈兆慧
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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