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A kind of application of bahgsns4 nonlinear optical crystal

A non-linear optics and multi-purpose technology, applied in the direction of nonlinear optics, optics, crystal growth, etc., can solve the problems of slow development of nonlinear crystals, low optical damage threshold, difficult crystal growth, etc., and achieve large nonlinear optical effects and physical The effects of stable chemical properties, easy processing and storage

Active Publication Date: 2021-07-27
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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  • A kind of application of bahgsns4 nonlinear optical crystal
  • A kind of 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 method 4 Crystal:

[0040] 8.47 grams of BAS, 11.63 g of HGS and 9.14 grams of SNS 2 (Ie BAS: HGS: SNS2 = 0.05 mol: 0.05mol), after uniform mixing, load φ12mm × 200mm quartz glass tube, vacuum to 10 -3 After Pas, it is placed in a tube-type growth furnace with a hydrogen flame, slowly rises to 950 ° C, and the temperature is 72 hours, slowly cooling at 1 ° C / h to room temperature, closing the tube growth furnace; after the stone tube is cooled Cut, get φ12mm × 60mm red bahgsns 4 Crystals.

Embodiment 2

[0042] Preparation BAHGSNS with a drop of crucible 4 Crystal:

[0043] 33.88 grams of BAS, 46.52 g of HGS and 36.56 g of SNS 2 (BA: HG: SN: S = 0.2mol: 0.2mol: 0.2mol: 0.8mol), after uniform mixing, load φ25mm × 200mm quartz glass tube, vacuum to 10 -3 After Pas, after packaging in a hydrogen flame, it is placed in a crystal growth furnace, slowly rises to 950 ° C to melt the raw material, and after the raw material is completely melted, the growth device is vertically decreased vertically at the speed of 10 mm / hour; 5 days crystal growth, after the growth is completed The growth device is reduced to room temperature for 50 hours to get φ25 × 60 mm red bahgsns. 4 Nonlinear optical crystals.

Embodiment 3

[0045] Preparation of BAHGSNS by high temperature melt spontaneous crystallization method 4 Crystal:

[0046] Powder BAHGSNS 4 Compound, load φ10mm × 100 mm quartz glass tube, vacuum to 10 -3 Passhered, placed in a tube growth furnace with a hydrogen flame, slowly rose to 1000 ° C, constant temperature 24 hours, slowly cool down to room temperature at a rate of 10 ° C / h, closing the tube growth furnace; Cut, get φ10 × 60mm red bahgsns 4 Nonlinear optical crystals.

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Abstract

The invention discloses a BaHgSnS 4 The use of nonlinear optical crystals, the nonlinear optical crystals are used to prepare nonlinear optical devices that realize laser frequency conversion; the BaHgSnS 4 The nonlinear optical crystal has no center of symmetry, belongs to the orthorhombic crystal system, and the space group is Pnn2, and its unit cell parameters are: α=β=γ=90°, Z=4. The nonlinear optical crystal of the present invention has the characteristics of large nonlinear optical effect, wide light transmission range (0.55-13 μm), stable physical and chemical properties, high hardness, good mechanical properties, not easy to break and deliquescence, and easy to process and store , can be used to prepare nonlinear optical devices.

Description

Technical field [0001] The present invention relates to the field of nonlinear optical crystals. More specifically, involving a bahgsns 4 Use of nonlinear optical crystals. Background technique [0002] Crystals having nonlinear optical effects are referred to as nonlinear optical crystals. Here the nonlinear optical effect refers to multiplier, and frequency, difference frequency, parameter enlargement. Only crystals that do not have a symmetrical center may have nonlinear optical effects. Using the nonlinear optical effect of the crystal, a nonlinear optical device such as a second harmonic generator, an upper, and a lower frequency converter, a photointed oscillator is made. The laser generated by the laser can be frequency conversion by a nonlinear optic device, thereby obtaining a more useful wavelength laser to make the laser get a wider application. Depending on the application band of the material, it can be divided into an ultraviolet region, visible and near-infrared li...

Claims

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Application Information

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Patent Type & Authority Patents(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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