Compound tin-boron-oxygen-chlorine and tin-boron-oxygen-chlorine non-linear optical crystal as well as preparation method and application
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A nonlinear optics, compound technology, applied in chemical instruments and methods, optics, crystal growth, etc., can solve problems such as difficulty in growing large-sized crystals and low birefringence
Inactive Publication Date: 2019-04-26
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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As we all know, the currently practical short-wavelength nonlinear optical crystal is the KBe crystal invented by Chinese scientists. 2 BO 3 f 2 (KBBF) crystal, BaB 2 o 4 (BBO) and LiB 3 o 5 (LBO), however, these crystals have defects such as difficulty in growing large-sized crystals and small birefringence, which limit their applications to a certain extent.
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Embodiment 1
[0054] Preparation compound:
[0055] According to the reaction formula: 2SnCl 2 +3B 2 o 3 →Sn 2 B 5 o 9 Cl+BCl 3 , the compound Sn was synthesized by solid phase reaction method 2 B 5 o 9 Cl:
[0056] SnCl 2 , B 2 o 3 Mix evenly at a molar ratio of 2:3, put it into a platinum crucible, place it in a muffle furnace, raise the temperature to 450°C under vacuum or an inert atmosphere, and keep the temperature constant for 48 hours to obtain the compound Sn 2 B 5 o 9 Cl polycrystalline powder.
Embodiment 2
[0058] Preparation compound:
[0059] According to the reaction formula: 2SnCl 2 +5H 3 BO 3 →Sn 2 B 5 o 9 Cl+6H 2 O+3HCl, the compound Sn was synthesized by solid phase reaction 2 B 5 o 9 Cl:
[0060] SnCl 2 , H 3 BO 3 Mix evenly at a molar ratio of 2:5, put it into a platinum crucible, place it in a muffle furnace under vacuum or an inert atmosphere, raise the temperature to 450°C, and keep the temperature constant for 24 hours to obtain the compound Sn 2 B 5 o 9 Cl polycrystalline powder.
Embodiment 3
[0062] Preparation compound:
[0063] According to the reaction formula: SnO+SnCl 2 +2B 2 o 3 +H 3 BO 3 →Sn 2 B 5 o 9 Cl+HCl+H 2 O, the compound Sn was synthesized by solid phase reaction 2 B 5 o 9 Cl:
[0064] SnO, SnCl 2 , B 2 o 3 , H 3 BO 3 Mix evenly according to the proportion of the reaction formula in Example 3, put it into a platinum crucible, place it in a muffle furnace, raise the temperature to 450°C under vacuum or an inert atmosphere, and keep the temperature constant for 120 hours to obtain the compound Sn 2 B 5 o 9 Cl polycrystalline powder.
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Abstract
The invention provides a compound tin-boron-oxygen-chlorine and a tin-boron-oxygen-chlorine non-linear optical crystal as well as a preparation method and application. The compound has a chemical formula Sn2B5O9Cl, has a molecular weight of 470.70, and is prepared by using a solid-phase synthesis method or a vacuum packaging method. The compound of the crystal has a chemical formula Sn2B5O9Cl, hasa molecular weight of 470.70, belongs to an orthorhombic crystal system, has a space group of Pnn2, has cell parameters that a=11.281(3) angstrom, b=11.331(3) angstrom, c=6.5573(19) angstrom, alpha=90 degrees, beta=90 degrees and gamma=90 degrees, and has a unit cell volume of 838.2(4) angstrom<3>; a frequency-doubled effect of the crystal is about 0.5 time of that of KH2PO4(KDP); an ultravioletcut-off edge of the crystal is less than 350nm. The crystal is grown by using a melting method, a high-temperature liquid melting method, a vacuum packaging method, a hydrothermal method or a room-temperature solution method, the crystal is good in chemical stability and can be applied to all-solid-state laser emitters as a short wavelength non-linear optical crystal.
Description
technical field [0001] The invention relates to a compound tin boron oxychloride Sn 2 B 5 o 9 Cl and tin boron oxychloride Sn 2 B 5 o 9 Cl nonlinear optical crystal, its preparation method and application. Background technique [0002] Short-wavelength nonlinear optical crystals can convert near-infrared and visible lasers into short-wavelength lasers by using their frequency conversion properties, and have important application values in medical, communication, scientific research and other fields. As we all know, the currently practical short-wavelength nonlinear optical crystal is the KBe crystal invented by Chinese scientists. 2 BO 3 f 2 (KBBF) crystal, BaB 2 o 4 (BBO) and LiB 3 o 5 (LBO), however, these crystals have defects such as difficulty in growing large-sized crystals and small birefringence, which limit their applications to a certain extent. Therefore, it is of great significance and practical value to prepare and synthesize new short-wavelength ...
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