Preparation method and application of barium-cesium borate nonlinear optical crystal

A technology of nonlinear optics and nonlinear crystals, applied in nonlinear optics, chemical instruments and methods, optics, etc., can solve the problems of low crystal transmittance, small birefringence, inability to perform nonlinear optical frequency conversion, etc.

Pending Publication Date: 2020-06-16
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

The main reason is that most nonlinear optical crystals can only be used in the visible and ultraviolet bands, and in the deep ultraviolet band, due to the low transmittance and small birefringen...

Method used

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  • Preparation method and application of barium-cesium borate nonlinear optical crystal
  • Preparation method and application of barium-cesium borate nonlinear optical crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Growth of CsBaB by crucible drop method 9 o 15 Crystal:

[0019] a. CsF, BaCO 3 and B 2 o 3 After weighing according to the molar ratio of 1:1:6, carefully grind and mix evenly, put the sample into a quartz tube to vacuumize and seal;

[0020] b. Place the quartz tube in step a in the crucible lowering furnace, raise the temperature to 650°C, keep it warm for 20 hours, adjust the position of the container so that the spontaneous nucleation temperature is at 630°C, and then slowly lower the container at a speed of 0.05mm / h, At the same time, keep the growth temperature constant. After the growth is over, reduce the temperature of the growth furnace to 30°C, take out the quartz tube, and obtain a CsBaB with a size of Φ4mm×5mm×8mm. 9 o 1 Nonlinear Optical Crystals.

Embodiment 2

[0022] Growth of CsBaB by crucible drop method 9 o 15 Crystal:

[0023] a. Add Cs 2 CO 3 、BaCO 3 and B 2 o 3 After weighing according to the molar ratio of 2:2:11, carefully grind and mix evenly, put the sample into a graphite crucible to evacuate and seal;

[0024] b. Place the graphite crucible in step a in the crucible lowering furnace, raise the temperature to 700°C, keep it warm for 22 hours, adjust the position of the container so that the inoculation temperature is at 680°C, and then slowly lower the container at a speed of 1 mm / h. At the same time, Slowly cool down at a rate of 1°C / h. After the growth is over, lower the temperature of the growth furnace to 30°C, take out the graphite crucible, and obtain CsBaB with a size of Φ5mm×7mm×8mm 9 o 15 Nonlinear Optical Crystals.

Embodiment 3

[0026] Growth of CsBaB by crucible drop method 9 o 15 Crystal:

[0027] a. CsF, BaCO 3 and H 3 BO 3 After weighing at a molar ratio of 1.5:1:10, carefully grind and mix evenly, put the sample into a platinum crucible to vacuumize and seal;

[0028] b. Place the platinum crucible in step a in the crucible lowering furnace, raise the temperature to 800°C, keep it warm for 30 hours, adjust the position of the container so that the spontaneous nucleation temperature is at 750°C, and then slowly lower the container at a speed of 0.5mm / h, At the same time, the temperature is slowly lowered at a rate of 2°C / h. After the growth is completed, the temperature of the growth furnace is lowered to 30°C, and the platinum crucible is taken out to obtain a CsBaB with a size of Φ6mm×9mm×15mm. 9 o 15 Nonlinear Optical Crystals.

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Abstract

The invention relates to a preparation method and application of a barium-cesium borate nonlinear optical crystal. The chemical formula of the crystal is CsBaB9O15, the molecular weight is 607.54, thecrystal belongs to a monoclinic system, the space group is Cc3; cell parameters are that a=6.4918(4) angstroms, b=11.4075(6) angstroms, c=17.2571(9) angstroms, beta=92.375(3), Z is equal to 4, and Vis equal to 1276.88 (12) angstrom<-3>. A Bridgman-Stockbarger method is adopted to grow the large-size cesium barium borate crystal, a powder frequency multiplication test method is adopted to measurethe phase matching ability of the CsBaB9O15 crystal, the powder frequency multiplication effect is 3KDP, and the ultraviolet absorption edge is close to 175 nm; the CsBaB9O15 crystal is a harmonic generator capable of realizing the quadruplicated frequency and the quintuplicated frequency of Nd:YAG(1064nm). In addition, the CsBaB9O15 crystal is colorless and transparent, does not deliquesce in the air, is stable in chemical performance, can be widely applied to various nonlinear optical fields, and can develop nonlinear optical application of an ultraviolet band.

Description

technical field [0001] The invention relates to a barium cesium borate nonlinear optical crystal, a preparation method and application. Background technique [0002] In the exploration of new materials for short-wavelength frequency-doubling crystals, guided by the anion group theory proposed by Chen Chuangtian et al., the research system has expanded from borate to carbonate, phosphate, silicate, nitrate and their Compound anion system of borate or halogen etc. Although nonlinear optical crystals have been greatly developed in terms of design synthesis, mechanism and performance, there are still huge challenges in this field. The main reason is that most nonlinear optical crystals can only be used in the visible and ultraviolet bands, and in the deep ultraviolet band, due to the low transmittance and small birefringence of the crystal, they cannot meet the requirements of deep ultraviolet transmission and phase matching, so that in the deep ultraviolet band The band is no...

Claims

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Application Information

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IPC IPC(8): C30B29/22C30B11/00G02F1/355
CPCC30B11/00C30B29/22G02F1/3551
Inventor 潘世烈杨云
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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