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Bismuth fluoride iodate nonlinear optical crystal and preparation method and use thereof

A nonlinear optics, bismuth fluoride technology, applied in the field of material science, to achieve the effects of simple preparation, short growth cycle and low toxicity

Active Publication Date: 2018-10-26
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After decades of hard work by scientists from various countries, many nonlinear optical crystals have been discovered, and some nonlinear optical crystals have been practically applied, such as: KH 2 PO 4 (KDP), KTiOPO 4 (KTP), LiB 3 o 5 (LBO), β-BaB 2 o 4 (BBO), KBe 2 BO3F 2 (KBBF),a-LiIO 3 with KIO 3 However, due to various reasons, no nonlinear optical crystal materials applicable to all wavelength bands have been obtained, so scientists from all over the world are still paying close attention to the exploration and research of various new nonlinear optical crystals

Method used

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  • Bismuth fluoride iodate nonlinear optical crystal and preparation method and use thereof
  • Bismuth fluoride iodate nonlinear optical crystal and preparation method and use thereof
  • Bismuth fluoride iodate nonlinear optical crystal and preparation method and use thereof

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Experimental program
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Effect test

Embodiment 1

[0035] By chemical reaction formula Bi 2 o 3 +HIO 3 +HBF 4 → Bi 3 f 3 I 4 o 13 +H 2 O to prepare compound Bi 3 f 3 I 4 o 13 Crystal, the specific operation is carried out according to the following steps:

[0036] Bi 2 o 3 and HIO 3 Put in a mortar with a molar ratio of 3:8, mix and grind well, then add HBF 4 The solution is fully mixed and dissolved, so that the molar ratio of the system is Bi 2 o 3 :HIO 3 :HBF 4 =6:16:3, the incompletely dissolved mixture was treated in an ultrasonic wave at a temperature of 30° C. for 60 minutes to make it fully mixed and dissolved to obtain a mixed solution;

[0037] The mixed solution obtained is transferred to the polytetrafluoroethylene lining of a clean, pollution-free autoclave with a volume of 25mL, and the autoclave is tightly sealed;

[0038] Place the high-pressure reactor in a thermostat, raise the temperature to 170°C at a rate of 20°C / h, keep the temperature constant for 3 days, and then lower it to room tem...

Embodiment 2

[0041] According to the chemical reaction formula Bi(OH) 3 +HIO 3 +HBF 4 → Bi 3 f 3 I 4 o 13 +H 2 O to prepare compound Bi 3 f 3 I 4 o 13 Crystal, the specific operation is carried out according to the following steps:

[0042] Bi(OH) 3 and HIO 3 Put in a mortar with a molar ratio of 3:4, mix and grind well, mix and grind well, then add HBF 4 The solution is fully mixed and dissolved, so that the molar ratio of the system is Bi(OH) 3 :HIO 3 :HBF 4 =12:16:3, the incompletely dissolved substance was ultrasonically treated at a temperature of 40°C for 60 minutes to make it fully mixed and dissolved to obtain a mixed solution;

[0043] The mixed solution obtained is transferred to the polytetrafluoroethylene lining of a clean, pollution-free autoclave with a volume of 50mL, and the autoclave is tightly sealed;

[0044] Put the high-pressure reactor into a constant temperature box, raise the temperature to 180°C at a rate of 30°C / hour, keep the temperature constant...

Embodiment 3

[0047] According to the chemical reaction formula Bi(NO 3 ) 3 ·5H 2 O+HIO 3 +HBF 4 → Bi 3 f 3 I 4 o 13 +H 2 O+NO 2 ↑Preparation of compound Bi 3 f 3 I 4 o 13 Crystal, the specific operation is carried out according to the following steps:

[0048] Bi(OH) 3 and HIO 3 Put in a mortar with a molar ratio of 3:4, mix and grind well, mix and grind well, then add HBF 4 The solution is fully mixed and dissolved, so that the molar ratio of the system is Bi(OH) 3 :HIO 3 :HBF 4 =12:16:3, the incompletely dissolved mixture was treated in an ultrasonic wave at a temperature of 35° C. for 60 minutes to make it fully mixed and dissolved to obtain a mixed solution;

[0049] The mixed solution obtained is transferred to the polytetrafluoroethylene lining of a clean, pollution-free autoclave with a volume of 75mL, and the autoclave is tightly sealed;

[0050] Place the high-pressure reactor in a constant temperature box, raise the temperature to 190°C at a rate of 40°C / h, ke...

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Abstract

The invention relates to a bismuth fluorine iodate nonlinear optical crystal, and a preparation method and an application thereof. The crystal has a chemical formula of Bi3F3I4O13 and a molecular weight of 1399.54, belongs to a hexagonal crystal system and has a space group of P63 mc, high transmittance in a wavelength range of 380 nm to 12 [mu]m, an ultraviolet transmission cut-off edge of 340 nm or below and an infrared transmission cut-off edge of 12.4 [mu]m in a light transmission wave band, and a nonlinear optical effect of about 4 times of KDP. According to the invention, by adopting a hydrothermal method, a millimeter-scale transparent bismuth fluorine iodate nonlinear optical crystal can be obtained through a programmed cooling or constant temperature process; and the crystal has simple operation and low cost, uses a reagent of an inorganic raw material with advantages like low toxicity, short growth cycle and physicochemical stability, and can be extensively applied in nonlinear optical devices like frequency-doubling conversion and optical parametric oscillators.

Description

technical field [0001] The invention relates to an inorganic iodate nonlinear optical crystal. The fluorobismuth iodate belongs to the field of inorganic chemistry, crystallography, material science and optics. Background technique [0002] Nonlinear optical effects originate from the interaction between laser and medium. When the laser propagates in a medium with non-zero second-order polarizability, nonlinear optical effects such as frequency doubling, sum frequency, difference frequency, and optical parametric amplification will occur. Nonlinear optical crystals, with frequency doubling effect (SHG), have important application value in high-tech fields such as laser frequency conversion, electro-optical modulation, and photorefractive information processing. Nonlinear optical materials are used in modern science and technology, especially in several military and civilian high-tech fields, such as submarine deep-water communication, laser blinding weapons, marine fish det...

Claims

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Application Information

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IPC IPC(8): G02F1/355C30B29/10C30B7/10
Inventor 潘世烈张敏米日丁·穆太力普
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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