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an agznps 4 Nonlinear optical crystal and its preparation method and nonlinear optical device

A technology of nonlinear optics and devices, applied in the direction of nonlinear optics, chemical instruments and methods, optics, etc., can solve the problems that have not been reported and pointed out, and achieve the effect of wide light transmission band, large effect, not easy to break and deliquescence

Active Publication Date: 2017-11-21
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

[0003] In 1985, AgZnPS was reported on Volume 41 of "Acta Crystallographica Section C: Crystal Structure Communications" 4 The molecular formula and unit cell of the compound, reported as an orthorhombic crystal system, with parameters of α=β=γ=90°, Z=4, but no report pointed out that AgZnPS 4 With nonlinear optical properties

Method used

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  • an agznps <sub>4</sub> Nonlinear optical crystal and its preparation method and nonlinear optical device
  • an agznps <sub>4</sub> Nonlinear optical crystal and its preparation method and nonlinear optical device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1, AgZnPS was prepared by high temperature melt spontaneous crystallization method 4 Crystal:

[0035] Weigh 2.479 g of Ag 2 S, 3.898 g ZnS and 2.220 g P 2 S 5 (i.e. Ag 2 S:ZnS:P 2 S 5 =0.01mol:0.02mol:0.01mol), 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 700°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 it open to get yellow AgZnPS 4 crystals.

Embodiment 2

[0036] Embodiment 2, using the crucible drop method to prepare AgZnPS 4 Crystal:

[0037] Weigh 4.957 g of Ag 2 S, 7.796 g ZnS and 4.440 g P 2 S 5 (Ag:Zn:P:S=0.04mol:0.04mol:0.04mol:0.16mol), after uniform mixing, put into a quartz glass tube of Φ25mm×200mm, and vacuumize to 10 -3 After that, it is packaged with an oxyhydrogen flame and placed in a crystal growth furnace, and slowly raised to 700°C to melt the raw material. After the raw material is completely melted, the growth device descends vertically at a speed of 0.1-10mm / hour; after the crystal growth is completed, the growth It took 50 hours for the device to cool down to room temperature, and a yellow AgZnPS was obtained 4 crystals.

[0038] After testing, the AgZnPS prepared in the above examples 1-2 4 Nonlinear optical crystals belong to the orthorhombic crystal system, and the space group is Pna2 1 , whose unit cell parameters are: α=γ=90°, β=108.70°, Z=4, With frequency doubling effect, the light transm...

Embodiment 3

[0040] The AgZnPS of embodiment 1-2 gained 4 The crystal is not easy to break, not easy to deliquescence, easy to cut, polish and store. The AgZnPS of embodiment 1-2 gained 4 crystal, placed in the attached figure 1 At the position marked 3 of the device shown, at room temperature, a Q-switched Ho:Tm:Cr:YAG laser is used as the light source, the incident wavelength is 2090nm infrared light, and the output wavelength is frequency-doubled light of 1045nm. The laser intensity is the same AgGaS 2 1.8 times.

[0041] attached figure 1 is to adopt AgZnPS of the present invention 4 The working principle diagram of a typical nonlinear optical device made of nonlinear optical crystal, in which 1 is the laser, 2 is the incident laser beam, and 3 is AgZnPS after crystal post-processing and optical processing 4 Nonlinear optical crystal, 4 is the outgoing laser beam generated, 5 is a filter; the incident laser beam 2 is emitted by the laser 1 and injected into AgZnPS 4 The output l...

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Abstract

The invention discloses an AgZnPS4 nonlinear optical crystal. The AgZnPS4 nonlinear optical crystal does not have the center of symmetry, and belongs to an orthorhombic system; the space group is Pna2[1]; and the cell parameters are as follows: a=12.502A, b=7.599A, c=6.070A, alpha=beta=gamma=90 degrees, and Z=4. The invention also discloses a preparation method of the nonlinear optical crystal by a high-temperature melt spontaneous crystallization process and a crucible descent process. The AgZnPS4 nonlinear optical crystal can be used for manufacturing a nonlinear optical device.

Description

technical field [0001] The present invention relates to a kind of AgZnPS 4 The nonlinear optical crystal (AgZnPS 4 single crystal) and the AgZnPS 4 Single crystal preparation method and AgZnPS containing the 4 Single crystal 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 be used more widely. Ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/46C30B11/00G02F1/355
CPCC30B11/00C30B29/46G02F1/3551
Inventor 姚吉勇林哲帅周墨林康雷张国春吴以成
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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