Preparation method of gray track resistance KTiOPO (GTR-KTP) crystals

A crystal, KH2PO4 technology, applied in crystal growth, chemical instruments and methods, single crystal growth, etc., can solve the problems of laser output power drop, KTP crystal unrecoverable, frequency doubling efficiency reduction, etc., to improve the internal quality of the crystal, good Anti-gray effect, effect of reducing conductivity and absorption coefficient

Active Publication Date: 2013-12-18
INNOWIT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the gray trace is formed, it will absorb a large amount of propagating light energy at the speed of light, resulting in a series of consequences such as crystal heating, frequency doubling efficiency reduction, laser output power reduction, and noise enhancement. Continued operation may even cause irreversible damage to the KTP crystal.

Method used

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  • Preparation method of gray track resistance KTiOPO (GTR-KTP) crystals
  • Preparation method of gray track resistance KTiOPO (GTR-KTP) crystals
  • Preparation method of gray track resistance KTiOPO (GTR-KTP) crystals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Raw materialKH 2 PO 4 Dissolve in distilled water first, with a mass concentration of 55%, filter with an ultra-fine membrane filtration device, and grow high-purity KH through a low-temperature solution method 2 PO 4 Crystal material, reducing the content of impurity ions in raw materials.

[0028] Make a platinum crucible container with a diameter of 10cm and a height of 14cm, and the raw material KH 2 PO 4 , K 2 CO 3 , Ti0 2 After mixing according to the mass ratio of 8:1:1, stir evenly and put it into a platinum crucible, heat up to 1000°C to melt the raw materials for reaction, the solution height is about 9cm, heat up to 1100°C and burn for 24h, then stir at constant temperature for 48h to form a uniform Stable high temperature solution.

[0029] The reaction produces the chemical equation of K6 co-solvent and KTP:

[0030] K6 co-solvent: 4KH 2 PO 4 +K 2 CO 3 —K 6 P 4 o 13 +4H 2 O↑+CO 2 ↑

[0031] KTP:KH 2 PO 4 +TiO 2 —KTiOPO 4 +H 2 O↑

[...

Embodiment 2

[0038] Raw materialKH 2 PO 4 Dissolve in distilled water first, with a mass concentration of 50%, filter with an ultra-fine membrane filtration device, and grow high-purity KH through a low-temperature solution method 2 PO 4 Crystal material, reducing the content of impurity ions in raw materials.

[0039] Make a platinum crucible container with a diameter of 10cm and a height of 14cm, and the raw material KH 2 PO 4 、K 2 CO 3 , TiO 2 After mixing according to the mass ratio of 8:1:1, stir evenly and put it into a platinum crucible, heat up to 1000°C to melt the raw materials for reaction, the solution height is about 9cm, heat up to 1100°C and burn for 24h, then stir at constant temperature for 48h to form a uniform Stable high temperature solution.

[0040] The reaction produces the chemical equation of K6 co-solvent and KTP:

[0041] K6 co-solvent: 4KH 2 PO 4 +K 2 CO 3 —K 6 P 4 o 13 +4H 2 O↑+CO 2 ↑

[0042] KTP:KH 2 PO 4 +TiO 2 —KTiOPO 4 +H 2 O↑

[0...

Embodiment 3

[0048] Raw materialKH 2 PO 4 Dissolve in distilled water first, with a mass concentration of 60%, filter with an ultra-fine membrane filtration device, and grow high-purity KH through a low-temperature solution method 2 PO 4 Crystal material, reducing the content of impurity ions in raw materials.

[0049] Make a platinum crucible container with a diameter of 10cm and a height of 14cm, and the raw material KH 2 PO 4 ,K 2 CO 3 , TiO 2 After mixing according to the mass ratio of 8:1:1, stir evenly and put it into a platinum crucible, heat up to 1000°C to melt the raw materials for reaction, the solution height is about 9cm, heat up to 1100°C and burn for 24h, then stir at constant temperature for 48h to form a uniform Stable high temperature solution.

[0050] The reaction produces the chemical equation of K6 co-solvent and KTP:

[0051] K6 co-solvent: 4KH 2 PO 4 +K 2 CO 3 —K 6 P 4 o 13 +4H 2 O↑+CO 2 ↑

[0052] KTP:KH 2 PO 4 +TiO 2 —KTiOPO 4 +H 2 O↑

[0...

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Abstract

The invention relates to a preparation method of gray track resistance KTiOPO (GTR-KTP) crystals. The method comprises the following steps: firstly preparing a KH2PO4 crystal material, and then carrying out sectional heating to form an even and stable high-temperature solution under a super environment; adopting a method of combining the top end with lifting to grow the GTR-KTP crystals. According to the KTP crystals prepared by the preparation method, an absorption coefficient of the KTP crystals is reduced; a gray track can be effectively prevented, so that the frequency doubling conversion efficiency of the KTP crystals is obviously enhanced; the GTR-KTP crystals are irradiated by a 100mw and 532nm of green light within 1000 seconds in a test; absorption of the system is basically kept stable; a good gray track resistant effect is displayed.

Description

technical field [0001] The invention relates to a GTR-KTP crystal (Gray Track Resistance KTP, GTR-KTP for short), in particular to a preparation method of a GTR-KTP crystal, which belongs to the field of nonlinear crystal materials. Background technique [0002] Potassium titanyl phosphate (KTiOPO 4 KTP for short) crystal is an internationally recognized nonlinear optical crystal with superior comprehensive performance. It has the advantages of large frequency doubling coefficient, high conversion efficiency, good temperature stability, high laser damage threshold, good machining performance and stable chemical properties. It is recognized as the best frequency doubling material for solid-state lasers at 1064-532nm, and has been widely and importantly applied. However, ordinary KTP is not perfect. Under the long-term action of high power density, it will produce the so-called "gray track effect" visible to the naked eye. Once the gray trace is formed, it will absorb a lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/22C30B15/20
Inventor 乔永军冯彧翟仲军李杰逄洪雷李勇董胜明
Owner INNOWIT
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