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Method for preparing borate-based crystal and laser oscillation apparatus

A manufacturing method, borate technology, applied in the field of cesium-boric acid used in laser oscillators, can solve the problems of high cost and long time

Active Publication Date: 2006-03-22
JAPAN SCI & TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, during the manufacture of CBO crystals and CLBO crystals, the raw material powder should be heated and melted in a melting furnace for several days, and then cooled to room temperature once to become the culture raw material, and then moved to the culture furnace to melt the culture raw material, and the single crystal is cultivated from the melt. The traditional manufacturing of CBO crystals and CLBO crystals has the disadvantages of long time and high cost

Method used

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  • Method for preparing borate-based crystal and laser oscillation apparatus
  • Method for preparing borate-based crystal and laser oscillation apparatus
  • Method for preparing borate-based crystal and laser oscillation apparatus

Examples

Experimental program
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Effect test

Embodiment 1

[0094] Cesium-borate-based crystals are produced using one embodiment of the method for producing borate-based crystals of the present invention.

[0095] First, as shown in Figure 1(a)-(d), add ion-exchanged water (2) into a container (1) made of polymethylpentene with a diameter of 20 cm and a height of 26 cm, and heat it to about 100 ° C in a melting furnace. Add 4337.4g Cs to it 2 CO 3 with 2162.6g B 2 o 3 The homogeneously mixed mixture dissolves, and heating is continued to evaporate the water. After the water is evaporated, the remaining material is filled into an open platinum crucible (3) with a diameter of 15 cm x a height of 15 cm, heated to 300° C. to dry, and then heated to 650° C. to bake to make the culture material. Then put the crucible (3) into the figure 2 In the five-layer controlled cylindrical resistance heating furnace (5) for cultivating the heater (4) shown, the small hole (6) for crystal seed entry and exit is provided at a position corresponding...

Embodiment 2

[0099] Cesium-borate-based crystals were produced using conditions different from those in Example 1 of the method for producing borate-based crystals of the present invention, and the properties of the cesium-borate-based crystals were evaluated as nonlinear optical crystals.

[0100] As shown in Figure 1, add ion-exchanged water (2) into a container (1) made of polymethylpentene with a diameter of 20 cm x a height of 26 cm, heat it to about 100 ° C in a dissolution furnace, and add 4671.1 g of Cs to it. 2 CO 3 with 2328.9g B 2 o 3 Mix the mixture evenly to dissolve it, and continue heating to evaporate the water.

[0101] After the water is evaporated, the remaining materials are filled in an open platinum crucible (3) with a diameter of 15 cm x a height of 15 cm, heated to 300° C. to dry, and then heated to 650° C. for sintering. Carry out the XRD measurement of this culture raw material, the result is as follows Figure 4 The peak shown in (b) can be confirmed to be on...

Embodiment 3

[0108] In the past CLBO crystallization culture, the amount of raw material was about 6kg, and expansion was caused by decarboxylation during heating, so Cs was not carried out. 2 CO 3 , Li 2 CO 3 , B 2 o 3 The powder is mixed and fired to fill a platinum crucible, and the temperature is raised to 900°C to melt or incubate the solution. In this case, during the heating process, the B with the lowest melting point among the raw materials 2 o 3 Melted first, it is estimated that Cs was dissolved in it 2 CO 3 with Li 2 CO 3 . That is, when melting raw materials in a heterogeneously mixed state, the high-viscosity boric acid-based raw materials are unlikely to cause diffusion, and it is estimated that regions with high concentrations of Cs and Li are locally generated, and it becomes difficult to form the necessary CLBO composition and structure during crystal growth.

[0109] In addition, a test of precipitating a CLBO crystal phase by sintering the raw material was al...

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Abstract

This invention provides a boric acid crystals that is useful to make wavelength conversion optical element and the like, which is made by dissolving water-soluble original material in water to make solution, evaporating water from the solution, either through sintering or not, to make culture material, and then fusing such culture material to make boric acid crystals. As a result, the boric acid crystals can be obtained simply in short time with low cost and further with excellent homogeneity and reliability. Also, this invention provides a laser oscillation apparatus with high reliability by using such crystals as wavelength conversion optical element.

Description

technical field [0001] The present invention relates to a method for producing borate-based crystals and a laser oscillator. More specifically, the invention of the present application relates to a laser that can be manufactured as Nd:YAG laser or Nd:YVO 4 Cesium-borate-based crystals used for wavelength conversion optical devices of 3-fold higher harmonics of laser light, etc., or cesium-lithium-borate-based crystals used as wavelength conversion optical devices of 4-fold higher harmonics of laser light, and can be A method for producing a novel borate-based crystal whose quality has been improved to become a more uniform and reliable crystal, and a laser oscillator using the crystal as a wavelength conversion optical device. technical background [0002] In recent years, the application of lasers in ultraviolet lithography, laser microfabrication, and laser nuclear fusion is being expanded. Laser oscillators used in these fields must efficiently obtain stable ultraviolet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/22C01B35/12
Inventor 佐佐木孝友森勇介吉村政志西冈志行福本悟松井知代佐治隆司
Owner JAPAN SCI & TECH CORP
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