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Selenium antimony gallium barium compound, selenium antimony gallium barium infrared nonlinear optical crystal, preparation method and application thereof

A barium compound and crystal technology, applied in the field of inorganic compound materials, can solve the problems of difficult crystal growth, low laser damage threshold, residual absorption, etc., and achieve the effects of easy processing and storage, wide infrared light transmission band, and fast growth speed

Active Publication Date: 2019-08-23
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, research on nonlinear optical crystals in the infrared band is still relatively scarce, and only ZGP (ZnGeP 2 ), AGS (AgGaS 2 ) and AGSe (AgGaSe 2 ) and a few
At the same time, these crystals also have serious disadvantages. For example, AGS and AGSe have large anisotropic thermal expansion, which makes it difficult to grow high-quality and large-sized crystals; coupled with low thermal conductivity, strong heat will be generated when pumping at high power. Gradient and thermal lens effect lead to extremely low laser damage threshold, which cannot be used for high-power infrared laser output; ZGP crystal is currently the best material for generating 3-5 μm infrared laser, but its crystal growth is extremely difficult, and there are problems in the near-infrared region. The avoidable, severe residual absorption makes it necessary to pump with a laser wavelength greater than 2 μm
The above shortcomings severely limit the practical application of the above-mentioned infrared crystals; the recently discovered new infrared nonlinear crystal BGS (BaGa 4 S 7 ) and BGSe (BaGa 4 Se 7 ) is still in the stage of laboratory development, and the specific practical value and application band need to be further studied; in addition, there is still a lack of nonlinear crystal materials with excellent performance in the 8-12 μm infrared band

Method used

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  • Selenium antimony gallium barium compound, selenium antimony gallium barium infrared nonlinear optical crystal, preparation method and application thereof
  • Selenium antimony gallium barium compound, selenium antimony gallium barium infrared nonlinear optical crystal, preparation method and application thereof
  • Selenium antimony gallium barium compound, selenium antimony gallium barium infrared nonlinear optical crystal, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Using 23BaSe+4Ga 2 Se 3 +Sb 2 Se 3 = Ba 23 Ga 8 Sb 2 Se 38 The reaction formula uses a high-temperature solid-state reaction method to prepare selenium, antimony, gallium and barium compounds;

[0040] The BaSe is 19.899 g, the Ga 2 Se 3 6.021 g, the Sb 2 Se 3 It is 1.922 grams; that is, BaSe:Ga 2 Se 3 :Sb 2 Se 3 =0.092mol:0.016mol:0.004mol;

[0041] The specific operation steps are: weigh the reagents according to the above dosage in the glove box, put them into a mortar, mix and grind them, then put them into a carbon-coated quartz tube of Φ19mm×25mm, and evacuate them to 10 -3 After Pa, the quartz tube was melted and packaged with a hydrogen-oxygen flame, put into a muffle furnace, raised to 800°C at a rate of 50°C / h, and kept at a temperature of 96h. After cooling, the sample was taken out, and the sample was ground and mixed again Placed in a carbon-coated quartz tube and evacuated to 10 -3 Pa was melted and sealed, then placed in a muffle furnace ...

Embodiment 2

[0043] Using 23Ba+4Ga 2 Se 3 +Sb 2 Se 3 +23Se=Ba 23 Ga 8 Sb 2 Se 38 The reaction formula uses a high-temperature solid-state reaction method to prepare selenium, antimony, gallium and barium compounds;

[0044] The Ba is 12.634 g, the Ga 2 Se 3 6.021 g, the Sb 2 Se 3 Be 1.922 grams, and described Se is 7.264 grams; Namely Ba:Ga 2 Se 3 :Sb 2 Se 3 : Se=0.092mol:0.016mol:0.004mol:0.092mol;

[0045] The specific operation steps are: weigh the reagents according to the above dosage in the glove box, mix them, and then put them into a carbon-coated quartz tube of Φ19mm×25mm, and evacuate to 10 -3 After Pa, the quartz tube was melted and packaged with a hydrogen-oxygen flame, put into a muffle furnace, raised to 800°C at a rate of 40°C / h, and kept at a temperature of 96h. Placed in a carbon-coated quartz tube and evacuated to 10 -3 Pa was melted and sealed, then placed in a muffle furnace and heated to 800°C for sintering for 72 hours; the sample was taken out and gr...

Embodiment 3

[0047] Using 23Ba+8Ga+Sb 2 Se 3 +35Se=Ba 23 Ga 8 Sb 2 Se 38 The reaction formula uses a high-temperature solid-state reaction method to prepare selenium, antimony, gallium and barium compounds;

[0048] The Ba is 12.634 grams, the Ga is 2.231 grams, and the Sb 2 Se 3 is 1.922 grams, and the Se is 11.054 grams; namely Ba:Ga:Sb 2 Se 3 : Se=0.092mol:0.032mol:0.004mol:0.140mol;

[0049] The specific operation steps are to weigh the reagents in the glove box according to the above dosage, put them into a carbon-coated quartz tube of Φ19mm×25mm, and evacuate to 10 -3 After Pa, the quartz tube was melted and packaged with a flame, put into a muffle furnace, and slowly raised to 850°C with a heating rate of 30°C / h, kept for 96h, taken out after cooling, ground and mixed the sample taken out, and placed again Vacuum to 10 in a carbon-coated quartz tube -3 Pa was melted and sealed, then placed in a muffle furnace and heated to 800°C for sintering for 72 hours; the sample was ...

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Abstract

The invention discloses a selenium, antimony, gallium and barium compound with a chemical formula of Ba23Ga8Sb2Se38, and a preparation method of the selenium, antimony, gallium and barium compound, and also discloses a selenium, antimony, gallium and barium crystal and a preparation method and application thereof. The selenium, antimony, gallium and barium infrared nonlinear optical crystal has the advantages that in the growth process, the crystal can easily grow, the crystal is transparent and has no coating, the growth speed is high, the cost is low, the larger-size crystal can be easily obtained, and the like; the infrared light transmittance wave band is broader, the mechanical property is good, the processing and storage are easy, and the like; the selenium, antimony, gallium and barium crystal can be used for manufacturing an infrared laser variable-frequency device.

Description

technical field [0001] The invention relates to the technical field of inorganic compound materials, in particular to a selenium-antimony-gallium-barium compound and a preparation method thereof, a selenium-antimony-gallium-barium infrared nonlinear optical crystal, a preparation method and an application thereof. Background technique [0002] The second-order nonlinear optical crystal is a kind of important photoelectric functional material that is closely integrated with laser technology. This type of crystal can adjust the frequency of commercial lasers through nonlinear effects such as frequency doubling, difference frequency, sum frequency and optical parametric oscillation. , produce a new wavelength laser source, and then greatly expand the application range of laser. For example, using a suitable frequency doubling crystal, the Nd:YAG (output wavelength is 1064nm) laser can be frequency doubled to produce a laser with a wavelength of 532nm; the 2.1μm laser can be fre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/46C30B11/00G02F1/355C01B19/00
Inventor 尹文龙余盛全张羽谢婧窦云巍唐明静袁泽锐方攀陈莹康彬
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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