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2-Amino-3-nitropyridine bromide salt nonlinear optical crystal

A nitropyridine bromide, nonlinear optics technology, applied in the field of nonlinear optical crystals, can solve the problems of large optical damage threshold, difficult to achieve optical integration, large optical propagation loss and the like

Active Publication Date: 2016-03-23
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

Although these nonlinear optical materials have been used in various industries, there are still obvious shortcomings: such as expensive, easy to damage, and can only work with single crystal materials, it is difficult to achieve optical integration
Subsequently, people carried out research on organic nonlinear optical crystals. Although organic materials have nonlinear optical coefficients 1-2 orders of magnitude higher than inorganic crystals, large optical damage thresholds (up to GW / cm 2 ), ultra-fast response time (sub-picosecond to femtosecond) and other advantages, but the problems of low thermal stability, poor repeatability and large light propagation loss of organic materials have not been fully resolved

Method used

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  • 2-Amino-3-nitropyridine bromide salt nonlinear optical crystal
  • 2-Amino-3-nitropyridine bromide salt nonlinear optical crystal
  • 2-Amino-3-nitropyridine bromide salt nonlinear optical crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Synthesis of Compound 2-Amino-3-nitropyridinium bromide

[0018] Raw materials used:

[0019]

[0020] Using 2-amino-3-nitropyridine and HBr solution as raw materials, the molar ratio is 1:1.5, put 2-amino-3-nitropyridine into methanol at room temperature, stir, and add 40% concentration of HBr solution into In the above methanol solution, after the 2-amino-3-nitropyridine powder is completely dissolved, filter it, place the filtered clear liquid in an oven at 45°C for rapid crystallization, and obtain a yellow powder that is 2-amino-3-nitropyridine bromide Salt.

[0021] Utilize the MiniflexII type X-ray powder diffractometer to carry out X-ray diffraction analysis to the powder, and compare with the simulated X-ray diffraction pattern of the single crystal data obtained ( image 3 ), the results showed a pure phase of 2-amino-3 nitropyridinium bromide salt.

Embodiment 2

[0023] Raw materials used:

[0024]

[0025] Growth of 2-amino-3-nitropyridine bromide salt crystals

[0026] The growth method of a kind of nonlinear optical crystal provided by the present invention, its steps are as follows: take 2-amino-3-nitropyridine and HBr solution as raw material, molar ratio is 1: 1.5, under room temperature, 2-amino-3- Put nitropyridine into methanol, stir, add 40% HBr solution to the above solution, after the 2-amino-3-nitropyridine powder is completely dissolved, filter, and place the filtered clear liquid in an oven at 45°C, Cover the mouth of the beaker with filter paper, and after a few days, obtain 9mm×9mm×3mm yellow blocky crystals.

Embodiment 3

[0028] Transmission rate test of 2-amino-3-nitropyridinium bromide salt crystal

[0029] Choose a good quality single crystal with a thickness of about 3mm, and carry out the transmission spectrum test. Adopt Perkin-ElmerUV-VIS-NIRSpectrometer (Lambda-900) spectrophotometer to measure the crystal in the ultraviolet-visible (190-2500nm) band transmission spectrum, and the UV-visible transmission cut-off wavelength of the crystal is 440nm (such as Figure 4 ).

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Abstract

The invention relates to a 2-amino-3-nitropyridine bromide nonlinear optical crystal and belongs to the field of photology and artificial crystal. The optical crystal belongs to an orthorhombic system, wherein the chemical formula is C5H6N3O2Br; a space group is C21mc; unicellular parameters are as follows: a is equal to 6.758(10), b is equal to 13.1495 (2), c is equal to 9.2686 (14), and V is equal to 824 (2); and a 2-amino-3-nitropyridine bromide salt crystal is yellow and is grown through a solution volatilization method. An ultraviolet-visible transmission spectrum research shows that an ultraviolet cutoff wavelength of the crystal is 440nm, a nonlinear powder frequency-doubled effect is 6 times more than potassium dihydrogen phosphate (KDP), and the crystal has a phase matching capability; and meanwhile, the crystal can be applicable to the nonlinear optical field, thereby enriching researching contents of nonlinear optical materials.

Description

technical field [0001] The invention relates to the field of optics and artificial crystal materials in the technical field of optoelectronic functional materials, in particular to a nonlinear optical crystal used as a laser modulation working substance. Specifically, it relates to a novel organic-inorganic hybrid nonlinear optical crystal 2-amino-3-nitropyridinium bromide compound and a crystal growth method thereof. Background technique [0002] Nonlinear optical functional crystals are widely used in the fields of laser and optoelectronic technology, such as optical fiber communication, optical storage, laser processing, laser medical treatment, laser weapons, laser nuclear fusion and other technical fields. Therefore, the research and development of new and efficient nonlinear optical materials will be the key to break through the bottleneck of current all-optical technology. [0003] At present, the nonlinear optical crystals that have been practically used include: po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/355C30B29/54C30B7/14C30B7/06G02F1/37H01S3/109
Inventor 罗军华陈天亮孙志华洪茂椿
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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