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Application of Titanium Dioxide Array Films as Second-Order Nonlinear Optical Materials

A second-order nonlinear, titanium dioxide technology, applied in nonlinear optics, optics, instruments, etc., can solve the problems of complex optical path design and high preparation cost, and achieve the effects of good physical and chemical stability, low preparation cost and excellent comprehensive performance.

Inactive Publication Date: 2017-10-27
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing commercial second-order nonlinear optical crystal materials have remarkable macroscopic second harmonic generation performance, but the complex preparation process of cultivating large single crystals leads to relatively high preparation costs for second-order nonlinear optical crystal materials, and the phase matching The precise and strict requirements of the application process require complex optical path design

Method used

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  • Application of Titanium Dioxide Array Films as Second-Order Nonlinear Optical Materials
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  • Application of Titanium Dioxide Array Films as Second-Order Nonlinear Optical Materials

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Embodiment 1

[0023] The titanium dioxide array film is used as a second-order nonlinear optical material, and the titanium dioxide array film is composed of aligned titanium dioxide nanorods. The thickness of the aligned titanium dioxide nanorods is 20 microns, the diameter of the nanorods is 180-200 nm, and the crystal form of the titanium dioxide is rutile phase.

[0024] References for preparation methods of titanium dioxide nanorod arrays 【Zeng T, Tao HZ, Sui XT, Zhou XD, ZhaoXJ, Growth of free-standing TiO 2 nanorod arrays and its application in CdSquantum dots-sensitized solar cells, Chemical Physics Letters 2011, 508 (1-3) 130-133], using a hydrothermal synthesis method, the specific steps are as follows:

[0025] First take 3mlTiCl 4 , 25ml of distilled water, and 35ml of concentrated hydrochloric acid with a concentration of 37% are put into a hydrothermal kettle; 2 Put the glass slide of the seed crystal layer into a hydrothermal kettle, seal the hydrothermal kettle, and conduc...

Embodiment 2

[0029] The titanium dioxide array film is used as a second-order nonlinear optical material, and the titanium dioxide array film is composed of aligned titanium dioxide nanotubes. The thickness of the aligned titanium dioxide nanotubes is 20 microns, the outer diameter of the nanotubes is 130-150 nm, the thickness of the tube walls is 20-30 nm, and the crystal form of the titanium dioxide is anatase phase.

[0030] References for preparation methods of titanium dioxide nanotube arrays [Wang XL, Zheng J, Sui XT, Xie H, LiuBS, Zhao XJ, CdS quantum dots sensitized solar cells based on free-standing and through-hole TiO2nanotube arrays, Dalton Transactions, 2013, 42( 41) 14726-14732], using the anodic oxidation method, the specific steps are as follows:

[0031] First, clean the titanium substrate and put it into a 4 In the ethylene glycol solution of F, anodize at a voltage of 50V for 20 hours; take out the anodized titanium sheet and put it in an oven with a temperature set at ...

Embodiment 3

[0035] The titanium dioxide array film is used as a second-order nonlinear optical material, and the titanium dioxide array film is composed of aligned titanium dioxide nanorods. The thickness of the aligned titanium dioxide nanorods is 4 microns, the diameter of the nanorods is 40-50 nm, and the crystal form of the titanium dioxide is rutile phase.

[0036] The second-order nonlinear optical properties of the titania nanorod arrays prepared above are determined by figure 1 Shown is the microphone fringe method for nonlinear optical performance tester evaluation. The second harmonic generation intensity of the titanium dioxide array film is 2.5 times that of a Y-cut quartz crystal with a thickness of 1 mm.

[0037][Liu Bin, Eray S. Aydil, Growth of Oriented Single-Crystalline Rutile TiO2Nanorods on Transparent Conducting Substrates for Dye-Sensitized Solar Cells, J.AM.CHEM.SOC.2009,131,3985–3990] , using a hydrothermal synthesis method, the specific steps are as follows:

...

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Abstract

The invention belongs to the field of nonlinear optical materials, and in particular relates to the application of a titanium dioxide array film as a second-order nonlinear optical material. The titanium dioxide array film is composed of aligned titanium dioxide nanorods or nanotubes. Compared with the existing second-order nonlinear optical materials, the outstanding features of this material are: it has a large second harmonic generation performance; phase matching is easy to realize, and the optical path design can be simplified in the application process; the preparation process is simple, the raw materials are cheap, The preparation cost is low; the physical and chemical stability is good, and the comprehensive performance is excellent.

Description

technical field [0001] The invention relates to the application of a titanium dioxide array film as a second-order nonlinear optical material, which belongs to the field of nonlinear optical materials, and also belongs to the fields of inorganic chemistry and material science. Background technique [0002] As an important basic material in the field of optics, nonlinear optical materials play an important role in the design and development of optical functional devices. Since the frequency doubling effect was first discovered by Franken et al. in 1961, after years of theoretical and application development, nonlinear optics has gradually become an important branch of the optical field. a wide range of applications. [0003] Considering its important role in the fields of optical communication, optical storage and laser remote sensing, the research and development of second-order nonlinear optical materials is a research hotspot at home and abroad. The existing commercial s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/355G02F1/37
Inventor 陶海征田甜杨红波韩学才赵修建
Owner WUHAN UNIV OF TECH
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