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Nonlinear optical crystal alkali metal NH4Be2BO3F2 and preparation method and application of nonlinear optical crystal alkali metal NH4Be2BO3F2

An alkali metal, acid ammonium salt technology, applied in nonlinear optics, chemical instruments and methods, optics, etc., can solve the problems of weakening, reduced birefringence, low group number density, etc., and achieves good chemical stability, dual Improved effect of refractive index and nonlinear effects

Inactive Publication Date: 2018-07-17
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared to KBBF (Δn=0.077), the c-axis of ABBF becomes longer, making its birefringence lower (Δn=0.055), which is unfavorable for deep-UV phase matching, and the (BO 3 ) 3- The group number density becomes smaller, resulting in a weaker nonlinear effect than KBBF (d eff =0.9348×KBBF)

Method used

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  • Nonlinear optical crystal alkali metal NH4Be2BO3F2 and preparation method and application of nonlinear optical crystal alkali metal NH4Be2BO3F2
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  • Nonlinear optical crystal alkali metal NH4Be2BO3F2 and preparation method and application of nonlinear optical crystal alkali metal NH4Be2BO3F2

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Growth by hydrothermal method (NH 4 ) 0.28 K 0.72 be 2 BO 3 f 2 single crystal

[0049] The crystal growth device is a resistance wire heating furnace, and the temperature control equipment is a 908PHK20 programmable automatic temperature controller.

[0050] Raw materials and mineralizers used:

[0051]

[0052]

[0053] The specific operation steps are as follows: choose H 3 BO 3 -NH 4F-KF mineralizer system, after weighing the above-mentioned raw materials and mineralizer according to the above-mentioned dosage in the operation box, put them into a hydrothermal kettle with a capacity of 1600ml, then pour 900ml of distilled water, and put the reaction kettle into the Slowly raise the temperature to 300°C / 350°C (upper temperature / lower temperature) in a resistance wire heating furnace, and keep the temperature constant for 30 days. Then cool down to 50°C at a rate of 5°C per hour, turn off the furnace, wash the sample with water and alcohol after coolin...

Embodiment 2

[0055] Growth by hydrothermal method (NH 4 ) 0.83 Rb 0.17 be 2 BO 3 f 2 single crystal

[0056] The crystal growth device is a resistance wire heating furnace, and the temperature control equipment is a 908PHK20 programmable automatic temperature controller.

[0057] Raw materials and mineralizers used:

[0058]

[0059] The specific operation steps are as follows: choose H 3 BO 3 -NH 4 For the F-RbF mineralizer system, after weighing the above-mentioned raw materials and mineralizers according to the above-mentioned doses in the operation box, put them into a hydrothermal kettle with a capacity of 1600ml, then pour 900ml of distilled water, and put the reaction kettle into the Slowly raise the temperature to 300°C / 350°C (upper temperature / lower temperature) in a resistance wire heating furnace, and keep the temperature constant for 30 days. Then cool down to 50°C at a rate of 5°C per hour, turn off the furnace, wash the sample with water and alcohol after cooling...

Embodiment 3

[0060] Growth by hydrothermal method (NH 4 ) 0.97 Cs 0.03 be 2 BO 3 f 2 single crystal

[0061] The crystal growth device is a resistance wire heating furnace, and the temperature control equipment is a 908PHK20 programmable automatic temperature controller.

[0062] Raw materials and mineralizers used:

[0063]

[0064] The specific operation steps are as follows: choose H 3 BO 3 -NH 4 F-CsF mineralizer system, after weighing the above raw materials and mineralizers according to the above dosage in the operation box, put them into a hydrothermal kettle with a capacity of 1600ml, then pour 900ml of distilled water, and put the reaction kettle into the Slowly raise the temperature to 310°C / 350°C (upper temperature / lower temperature) in a resistance wire heating furnace, and keep the temperature constant for 30 days. Then cool down to 50°C at a rate of 5°C per hour, turn off the furnace, wash the sample with water and alcohol after cooling, and obtain a (NH 4 ) 0....

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Abstract

The invention provides a novel nonlinear optical crystal alkali metal NH4Be2BO3F2 and a preparation method and an application of the nonlinear optical crystal alkali metal NH4Be2BO3F2. The general chemical formula of the crystal is (NH4)xM(1-x)Be2BO3F2, AMBBF for short, wherein the range of x is that x is more than 1 and less than 1, and M is chosen from K, Rb and Cs. The series of crystal has nosymmetric center, and belongs to a trigonal system, and the space group is R32. The crystal AMBBF has an excellent optical property, the hydrogen bond between the ion NH4<+> and F<-> in the crystal effectively strengthens the interlayer acting force, and the layered growth habit of the crystal is effectively alleviated; in addition, the c axis of the AKBBF, ARBBF and ACBBF is shortened in comparison with the ABBF, RBBF and CBBF, the nonlinear effect of the crystal is strengthened, the birefringence of the crystal is increased, so that the crystal AMBBF has the advantages of both ABBF and MBBF,particularly, the performance of the AKBBF is almost the same with that of the KBBF, and the interlayer acting force is also improved. The crystal AMBBF meets the use requirement of the nonlinear optical crystal from the infrared spectrum to the deep ultraviolet spectrum.

Description

technical field [0001] The invention relates to a series of novel optoelectronic functional materials and their growth methods and applications, in particular to a series of alkali metal ammonium fluoroborate beryllium salt nonlinear optical crystal materials and their preparation methods and applications. Background technique [0002] The nonlinear optical effect of crystal means that when a laser beam with a certain polarization direction passes through a nonlinear optical crystal (such as borate nonlinear optical crystal) in a certain incident direction, the frequency of the beam will change. [0003] Crystals with nonlinear optical effects are called nonlinear optical crystals. The use of nonlinear optical crystals for laser frequency conversion broadens the range of laser wavelengths and makes the application of lasers more extensive. Especially borate nonlinear optical crystals such as BaB 2 o 4 (BBO), LiB 3 o 5 (LBO), MBe 2 BO 3 f 2 (MBBF, M=K, Rb, Cs), Sr 2 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/12C30B7/10G02F1/355
CPCC30B29/12C30B7/10G02F1/3551
Inventor 叶宁彭广
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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