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Application of cubic-phase Ga2Se3 crystal to nonlinear optics

A nonlinear optics, cubic phase technology, applied in nonlinear optics, optics, crystal growth and other directions, can solve the problem of no discovery, and achieve the effect of easy operation, simple chemical composition, and good repeatability

Inactive Publication Date: 2017-11-21
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there is no discovery similar to our synthetic Ga 2 Se 3 Related reports on crystallographic methods

Method used

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  • Application of cubic-phase Ga2Se3 crystal to nonlinear optics
  • Application of cubic-phase Ga2Se3 crystal to nonlinear optics
  • Application of cubic-phase Ga2Se3 crystal to nonlinear optics

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Experimental program
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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] 1. Cubic phase Ga 2 Se 3 Synthesis of crystals:

[0018] reactant Ga 2 o 3 (99.99%), B (99.99%) and Se (99.999%) are charged according to molar ratio 1: 2: 3, and all materials are ground into fine powder in agate mortar, and are pressed into flakes with tablet machine.

[0019] Put the flake medicine into a quartz tube with one end sealed (outer diameter 13mm, thickness 1mm), connect to the vacuum system to evacuate to 1×10 -4 Holder, and melt the quartz tube with an oxyhydrogen flame to seal. Transfer the sealed quartz tube to a muffle furnace for temperature control, react at 800-1000°C for more than 24 hours, then slowly cool down to 300°C at a rate of 4-6°C / hour, and cool down to room temperature naturally at the end of the program .

[0020] Open the quartz tube in the fume hood to take out the reactants, wash repeatedly with hot wat...

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Abstract

The invention discloses application of a cubic-phase Ga2Se3 crystal to nonlinear optics. A preparation method for the crystal comprises the following steps: subjecting gallium oxide, boron and selenium in a mol ratio of 1: 2: 3 to mixing, grinding and tablet compressing successively and then sealing the obtained tablet in a vacuumized quartz tube; carrying out a reaction at 850 to 1000 DEG C for 24 h or more and then carrying out slow cooling to 300 DEG C at a cooling speed of 4 to 6 DEG C / h; and washing a product obtained in the previous step and drying the product so as to obtain the pure-phase Ga2Se3 crystal. The preparation method is simple in process, easy to operate, simple in chemical composition and good in repeatability; and the prepared cubic-phase Ga2Se3 crystal has great frequency-doubled effect and a wide infrared transmission range and can be applied to frequency conversion of laser output of a laser.

Description

technical field [0001] The present invention relates to the application of a second-order nonlinear optical crystal, especially a cubic phase Ga 2 Se 3 Applications of crystals in nonlinear optics. Background technique [0002] Compared with the ultraviolet, visible-near-infrared nonlinear optical crystals that have been widely used, the nonlinear optical crystals in the middle and far infrared regions are still quite scarce. So far, more successful infrared nonlinear optical crystals include chalcopyrite structure AgGaS 2 and ZnGeP 2 , but their own defects seriously limit their application range. In view of the urgent application requirements of infrared nonlinear optical crystals in the fields of optical fiber communication, laser spectroscopy, laser radar, laser weapons, laser scanning and ranging, it is urgent to develop new infrared nonlinear optical crystals with excellent comprehensive nonlinear optical properties. In particular, it is necessary to find crystal ...

Claims

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Application Information

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IPC IPC(8): C30B29/46C30B1/10G02F1/355
Inventor 郭胜平孙宗栋迟洋
Owner YANGZHOU UNIV
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