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Application of BaHgSnS4 nonlinear optical crystal

A nonlinear optics, crystal technology, applied in nonlinear optics, optics, crystal growth and other directions, can solve the problems of slow development of nonlinear crystals, low light damage threshold, difficult crystal growth, etc.

Active Publication Date: 2019-04-19
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The development of nonlinear crystals in the infrared band is relatively slow; the materials in the infrared region are mostly ABC 2 Type chalcopyrite structure semiconductor materials, such as AgGaQ 2 (Q=S,S) The photodamage threshold of infrared nonlinear crystals is too low and the crystal growth is difficult, which directly affects the practical use

Method used

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  • Application of BaHgSnS4 nonlinear optical crystal
  • Application of BaHgSnS4 nonlinear optical crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Preparation of BaHgSnS by High Temperature Melt Spontaneous Crystallization 4 Crystal:

[0040] Weigh 8.47 g BaS, 11.63 g HgS and 9.14 g SnS 2 (i.e. BaS:HgS:SnS 2=0.05mol:0.05mol:0.05mol), after mixing evenly, put it into a quartz glass tube of Φ12mm×200mm, and evacuate to 10 -3 After that, it was packaged with an oxyhydrogen flame and placed in a tube growth furnace, slowly raised to 950°C, kept at a constant temperature for 72 hours, slowly cooled to room temperature at a rate of 1°C / h, and the tube growth furnace was closed; after the quartz tube cooled Cut to get Φ12mm×60mm red BaHgSnS 4 crystals.

Embodiment 2

[0042] Preparation of BaHgSnS by crucible drop method 4 Crystal:

[0043] Weigh 33.88 g BaS, 46.52 g HgS and 36.56 g SnS 2 (Ba: Hg: Sn: S = 0.2mol: 0.2mol: 0.2mol: 0.8mol), after mixing evenly, put it into a quartz glass tube of Φ25mm×200mm, and evacuate to 10 -3 After that, it is packaged with an oxygen-hydrogen flame and placed in a crystal growth furnace, and slowly raised to 950°C to melt the raw material. After the raw material is completely melted, the growth device drops vertically at a speed of 10mm / hour; after 5 days of crystal growth, the growth is completed , the growth device takes 50 hours to cool down to room temperature, and obtains φ25×60mm red BaHgSnS 4 Nonlinear Optical Crystals.

Embodiment 3

[0045] Preparation of BaHgSnS by High Temperature Melt Spontaneous Crystallization 4 Crystal:

[0046] Weigh powdered BaHgSnS 4 The compound is put into a Φ10mm×100mm quartz glass tube and vacuumed to 10 -3 After that, it is packaged with a hydrogen-oxygen flame and placed in a tubular growth furnace, slowly raised to 1000°C, kept at a constant temperature for 24 hours, slowly cooled to room temperature at a rate of 10°C / h, and the tubular growth furnace is closed; after the quartz tube is cooled Cut to get φ10×60mm red BaHgSnS 4 Nonlinear Optical Crystals.

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Abstract

The invention discloses application of a BaHgSnS4 nonlinear optical crystal. The nonlinear optical crystal is used for preparing a nonlinear optical device for realizing laser frequency conversion; the BaHgSnS4 nonlinear optical crystal does not have a symmetric center and belongs to an orthogonal crystal system, a space group is Pnn2, and the unit cell parameters of the BaHgSnS4 nonlinear opticalcrystal are as shown in specification. The nonlinear optical crystal has a large nonlinear optical effect and a wide light transmission range (0.55-13 mu m), has the characteristics of stable physical and chemical properties, high hardness, good mechanical properties, no easiness in fragmentation, no easiness in deliquescence, easiness in processing and storage, and can be used for preparing nonlinear optical devices.

Description

technical field [0001] The invention relates to the field of nonlinear optical crystals. More specifically, a BaHgSnS 4 Use of nonlinear optical crystals. Background technique [0002] Crystals with nonlinear optical effects are called nonlinear optical crystals. Here nonlinear optical effects refer to effects such as frequency doubling, sum frequency, difference frequency, and parametric amplification. Nonlinear optical effects are only possible in crystals that do not have a center of symmetry. Using the nonlinear optical effect of crystals, nonlinear optical devices such as second harmonic generators, up and down frequency converters, and optical parametric oscillators can be made. The laser generated by the laser can be frequency converted by nonlinear optical devices, so as to obtain more useful wavelengths of laser light, so that the laser can be used more widely. According to the different application bands of materials, they can be divided into three categories:...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/355C30B1/10C30B29/46
CPCC30B1/10C30B29/46G02F1/3551
Inventor 姚吉勇郭扬武李壮邢文豪
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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