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Zinc-cadmium borate polycrystal and producing method thereof

A technology of zinc borate and molecular formula, applied in the field of optical zinc cadmium borate polycrystal and its preparation, can solve the problems of small nonlinear optical coefficient, unclear application prospect, difficult crystal growth and the like, and achieve the effect of good mechanical properties

Inactive Publication Date: 2007-06-06
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

About CdO-ZnO-B 2 o 3 Research on ternary single crystals, Sun Tongqing et al. reported Cd 3 Zn 3 B 4 o 12 (Tongqing Sun, Feng Pan et al.Acta Cryst., 2003, C59: i107~i108) crystal structure, Cd 3 Zn 3 B 4 o 12 It is also a crystal with excellent nonlinear optical properties. Pan Feng and others have obtained the Chinese invention patent authorization for this crystal (patent number: ZL 02 1 24079.5); Yuan Xin and others synthesized a new crystal Cd 1.17 Zn 0.83 B 2 o 5 and Cd 0.02 Zn 0.98 (BO 2 ) 6 (Xin Yuan, Dezhong Shen et al.J.Cryst.Growth.2006, 292:485~463), but the growth of these two crystals is difficult, the nonlinear optical coefficient is not large, and the application prospect is not very clear

Method used

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  • Zinc-cadmium borate polycrystal and producing method thereof
  • Zinc-cadmium borate polycrystal and producing method thereof

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Experimental program
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Effect test

Embodiment 1

[0017] Chemically synthesized CdZn 2 B 2 o 6 For example, the raw material ratio used is CdO: ZnO: H 3 BO 3 =20:40:40 (molar ratio). Weigh CdO, ZnO and H according to the stoichiometric ratio 3 BO 3 , after careful grinding and mixing, the briquette was put into a platinum crucible, heated to about 800°C in a muffle furnace and sintered at a constant temperature for 60 hours to obtain a CZBO polycrystalline sample.

Embodiment 2

[0019] Chemically synthesized CdZn 2 B 2 o 6 For example, the raw material ratio used is CdO: ZnO: H 3 BO 3 =19:39:42 (molar ratio). Weigh CdO, ZnO and H according to the chemical molar ratio 3 BO 3 , after careful grinding and mixing, the briquette was put into a platinum crucible, heated to about 800°C in a muffle furnace and sintered at a constant temperature for 60 hours to obtain a CZBO polycrystalline sample.

Embodiment 3

[0021] At room temperature, using a YAG laser as a light source, using a laser with an incident wavelength of 1064nm, an intensity of 22.5mJ, a pulse width of 10ns, and a spot diameter of 7mm, the nonlinear optical coefficients of KDP (potassium dihydrogen phosphate) and CZBO samples were compared and tested. The frequency-doubling laser with an output wavelength of 532nm was obtained in the experiment, and the frequency-doubling coefficient of CZBO polycrystalline powder was measured to be 14.28 times that of KDP.

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Abstract

This invention discloses boric acid zinc cadmium polycrystal and its preparation method. The boric acid zinc cadmium polycrystal provided of the invention, whose molecular formula is CdZn2B2O6, for short is CZBO crystal. The CZBO's nonlinear optics modulus is 14.28 times than KDP in powder double frequency effect test. The crystal is not deliquescence in air, it has fine mechanical performance, can be applied in the nonlinear optics fields such as harmonic generator, optical parameter and the light amplifier document, electricity light modulator and the fiber waveguide component.

Description

technical field [0001] The invention relates to a nonlinear optical zinc-cadmium borate polycrystal and a preparation method thereof. Background technique [0002] Exploring new nonlinear optical crystals with high conversion efficiency, wide transmission band, large optical damage threshold, and stable physical and chemical properties has always been a hot topic in the field of laser frequency conversion. Since the 1970s, although a series of nonlinear optical crystals such as KDP, LN, BBO, KN, KTP, LBO, CBO, CLBO, etc. have been developed at home and abroad, these crystals have their own advantages when they are applied in the field of laser frequency conversion. The advantages and disadvantages of the crystals are also limited, so it has been a research hotspot to constantly search for new nonlinear optical crystals with better performance and more suitable for certain frequency conversion applications. So far, the nonlinear optical coefficients of borate crystals that c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/355
Inventor 张帆沈德忠沈光球王晓青
Owner TSINGHUA UNIV