Nonlinear optical crystal niobium oxyiodate sulfate and its preparation method and use

A nonlinear optics, crystal technology, applied in nonlinear optics, chemical instruments and methods, optics, etc., to achieve the effects of high optical transmittance, high crystal purity, and simple synthesis method

Active Publication Date: 2021-05-11
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current commercial nonlinear optical materials are difficult to meet all the above conditions at the same time, so researchers from various countries have been exploring and researching new nonlinear optical materials.

Method used

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  • Nonlinear optical crystal niobium oxyiodate sulfate and its preparation method and use
  • Nonlinear optical crystal niobium oxyiodate sulfate and its preparation method and use
  • Nonlinear optical crystal niobium oxyiodate sulfate and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Place 0.2mmol of niobium pentoxide, 4mmol of iodic acid, 1mL of water and 2mL of 98wt% sulfuric acid in a 23mL PTFE-lined stainless steel hydrothermal reaction kettle, and then put the hydrothermal reaction kettle into the muffle furnace , the temperature was raised to 180°C in 3 hours, the temperature was kept constant for 72 hours, and then the temperature was lowered to room temperature at a cooling rate of 4°C / h; after the reaction, the product was washed several times with deionized water and filtered to obtain pure Nb 2 o 3 (IO 3 ) 2 (SO 4 ) crystals.

Embodiment 2

[0039] The niobium powder of 0.4mmol, the iodic acid of 4mmol, 1.2mL water and 2mL98wt% sulfuric acid are placed in the stainless steel hydrothermal reaction kettle of the Teflon liner of 23mL, then the hydrothermal reaction kettle is put into the muffle furnace, The temperature was raised to 240°C in 3 hours, kept at a constant temperature for 24 hours, and then lowered to room temperature at a cooling rate of 4°C / h; after the reaction was completed, the product was washed several times with deionized water and filtered to obtain pure Nb 2 o 3 (IO 3 ) 2 (SO 4 ) crystals.

Embodiment 3

[0041] Place 0.2mmol of niobium pentoxide, 2mmol of iodine pentoxide, 1mL of water and 2mL of 98wt% sulfuric acid in a 23mL stainless steel hydrothermal reaction kettle lined with polytetrafluoroethylene, and then put the hydrothermal reaction kettle into the muffle In the furnace, the temperature was raised to 220°C in 3 hours, and the temperature was kept at a constant temperature for 24 hours, and then the temperature was lowered to room temperature at a cooling rate of 4°C / h; after the reaction was completed, the product was washed several times with deionized water and filtered to obtain pure Nb 2 o 3 (IO 3 ) 2 (SO 4 ) crystals.

[0042] Above-mentioned embodiment 1-3 all prepares pure Nb2 o 3 (IO 3 ) 2 (SO 4 ) crystal, with the inorganic crystal Nb of embodiment 3 gained 2 o 3 (IO 3 ) 2 (SO 4 ) as an example, it is determined by single crystal X-ray diffraction structure analysis, such as figure 2 As shown, the upper XRD spectrum is the experimental test res...

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Abstract

The invention belongs to the technical field of nonlinear optical crystal materials, and discloses a nonlinear optical crystal, a preparation method and application thereof. The crystal has the chemical formula shown below: Nb 2 O 3 (IO 3 ) 2 (SO 4 ), its crystal structure belongs to the monoclinic system, and the space group is C222 1 . The crystal has excellent second-order nonlinear optical properties, including a wide optical transmission range (0.38‑8μm), and its powder frequency doubling strength can reach 6 times that of the commercial material KDP. The physical and chemical properties are very stable, and the thermal weight loss temperature is 580 ° C. Above, it has important application value in high-tech fields such as laser frequency converter and optical parametric oscillator.

Description

technical field [0001] The invention belongs to the technical field of inorganic nonlinear optical materials, and also belongs to the fields of inorganic chemistry and crystallography, and specifically relates to nonlinear optical crystal niobium oxyiodate sulfate, its preparation method and application. Background technique [0002] Nonlinear optical material science is a comprehensive interdisciplinary subject including crystallography, materials science and optics. Using nonlinear effects such as frequency doubling, difference frequency, and frequency generated when laser propagates in a nonlinear material medium, lasers of different wavelengths that cannot be directly obtained by laser light sources can be obtained, making nonlinear optical materials in laser equipment, communications, It plays an irreplaceable role in different fields such as medical treatment and national defense. [0003] In the research process of nonlinear optical materials, inorganic materials hav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B7/10C30B29/46G02F1/355
CPCC30B7/10C30B29/46G02F1/3551
Inventor 唐宏鑫傅瑞标张玉箫吴新涛
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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