a bahgsnse 4 Nonlinear optical crystal and its preparation method and application

A nonlinear optics and crystal technology, applied in nonlinear optics, chemical instruments and methods, optics, etc., can solve the problems of slow development of nonlinear crystals, low optical damage threshold, and influence on practical use, etc., and achieve easy processing and storage, The effect of large optical effect and fast growth speed

Active Publication Date: 2021-08-17
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, Se) The photodamage threshold of infrared nonlinear crystal is too low and the crystal growth is difficult, which directly affects the practical use

Method used

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  • a bahgsnse <sub>4</sub> Nonlinear optical crystal and its preparation method and application
  • a bahgsnse <sub>4</sub> Nonlinear optical crystal and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1, BaHgSnSe was prepared by high temperature melt spontaneous crystallization method 4 Crystal:

[0041] Weigh 10.82 g BaSe, 13.98 g HgSe and 13.84 g SnSe 2 (i.e. BaSe:HgSe:SnSe 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 is packaged with an oxyhydrogen flame and placed in a tube growth furnace, slowly raised to 900°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 is closed; after the quartz tube is cooled Cut to get Φ12mm×60mm red BaHgSnSe 4 crystals.

Embodiment 2

[0042] Embodiment 2, prepare BaHgSnSe by crucible descending method 4 Crystal:

[0043] Weigh 43.26 g BaSe, 55.92 g HgSe and 55.34 g SnSe 2 (Ba: Hg: Sn: Se = 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 took 50 hours to cool down to room temperature, and obtained φ25×90mm red BaHgSnSe 4 Nonlinear Optical Crystals.

Embodiment 3

[0044] Example 3, BaHgSnSe was prepared by high temperature melt spontaneous crystallization method 4 Crystal:

[0045] Weigh powdered BaHgSnSe 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 BaHgSnSe 4 Nonlinear Optical Crystals.

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Abstract

The invention discloses a BaHgSnSe 4 Nonlinear optical crystal and its preparation method and application; BaHgSnSe 4 Nonlinear optical crystals are grown by high temperature melt spontaneous crystallization method or crucible drop method; in this BaHgSnSe 4 In the growth of nonlinear optical crystals, the crystals have the advantages of fast growth, low cost, and easy access to larger-sized crystals; the obtained BaHgSnSe 4 Nonlinear optical crystals have large nonlinear optical effects (under the same conditions, AgGaS 2 6.3 times of ), wide light transmission band (1-22μm), high hardness, good mechanical properties, easy processing and other advantages; the BaHgSnSe 4 Nonlinear optical crystals can be used to make nonlinear optical devices.

Description

technical field [0001] The present invention relates to a kind of BaHgSnSe 4 The nonlinear optical crystal (BaHgSnSe 4 single crystal) and the BaHgSnSe 4 Single crystal preparation method and the BaHgSnSe 4 Use of single crystals for fabrication of nonlinear optical devices. 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 ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G02F1/355
CPCC30B11/00C30B29/46G02F1/3551
Inventor姚吉勇郭扬武李壮罗晓宇
OwnerTECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI