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Terahertz wave phase regulation and control method based on organic solvent

An organic solvent and terahertz wave technology, applied in the field of terahertz wave phase control, can solve the problems of restricting wide application, the difficulty of conductive electrodes to pass through terahertz, and the high price of liquid crystal materials, achieving good repeatability, wide application range, Inexpensive effect

Active Publication Date: 2021-03-09
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For such a large electric field, it is generally necessary to design a complex structure to make the distance between the electrodes close enough to generate a large enough electric field, but conductive electrodes are generally difficult to pass through terahertz, so a more complex design is required to achieve electric field regulation phase
In addition, the high price of liquid crystal materials, and the application of magnetic and electric fields have strict requirements on application scenarios, which limit the wide application of this method

Method used

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  • Terahertz wave phase regulation and control method based on organic solvent
  • Terahertz wave phase regulation and control method based on organic solvent
  • Terahertz wave phase regulation and control method based on organic solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A terahertz wave phase control method based on an organic solvent, comprising the following steps:

[0036] Step 1, disperse 0.2mg gold nanoparticle in 5mL toluene, obtain the gold nanoparticle solution that mass concentration is 0.04mg / mL, the particle diameter of gold nanoparticle is 6nm; Then, take 1.5mL gold nanoparticle solution, adopt glass The syringe is injected into the quartz cuvette, the cuvette optical path is 5mm, the wall thickness is 1.25mm, and the cuvette is sealed to avoid the volatilized toluene from diffusing into the air during the heating process;

[0037] Step 2, such as figure 1 As shown, the cuvette containing the gold nanoparticle solution obtained in step 1 is placed on the optical path of the terahertz spectroscopy system, so that the terahertz wave signal passes through the gold nanoparticle solution in the cuvette, and at the same time, a beam of A laser with a wavelength of 650 nm is irradiated on the cuvette;

[0038] Step 3. Adjust the...

Embodiment 2

[0040] The difference between embodiment 2 and embodiment 1 is that the control mode is replaced by electric heater from laser. The specific process is:

[0041] Step 1, is identical with embodiment 1;

[0042] Step 2. Place the cuvette containing the gold nanoparticle solution obtained in step 1 on the optical path of the terahertz spectroscopy system, let the terahertz wave signal pass through the gold nanoparticle solution in the cuvette, and at the same time, use electric heating The device is heated compared with the cuvette;

[0043] Step 3. Adjust the temperature of the electric heater to 21°C, 42°C, 55°C and 68°C respectively, and obtain the terahertz time-domain transmission spectra at different temperatures, as shown in image 3 As shown, its terahertz time-domain spectrum and figure 2 (a) Basically the same. It shows that by changing the temperature, it is also possible to control the phase of the terahertz wave.

Embodiment 3

[0045] Compared with Example 2, Example 3 differs in that only the gold nanoparticle solution is replaced with toluene, and the rest of the process is the same as that of Example 2.

[0046] The terahertz time-domain transmission spectra obtained under different temperatures tested in Example 3 are as follows: Figure 4 As shown, it is basically consistent with Example 2, indicating that the phase adjustment of the terahertz wave can also be realized by adjusting the temperature of the toluene solution.

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Abstract

The invention discloses a terahertz wave phase regulation and control method based on an organic solvent, and belongs to the field of terahertz wave phase regulation and control. The method comprisesthe following steps: 1) injecting an organic solvent into a cuvette; 2) putting the cuvette filled with the organic solvent into a light path of terahertz waves; and 3) adjusting the temperature of the organic solvent within the temperature range of 20-70 DEG C to realize phase regulation of terahertz waves. According to the terahertz wave phase regulation and control method based on the organic solvent, organic solvents such as benzene and methylbenzene are adopted, the price is low, and obtaining is easy; and the method is simple, easy to operate, good in repeatability and wide in application range, and phase regulation and control of terahertz waves can be achieved through temperature or light.

Description

technical field [0001] The invention belongs to the field of terahertz wave phase regulation, and in particular relates to a terahertz wave phase regulation method based on an organic solvent. Background technique [0002] Terahertz wave technology is rated as one of the "Ten Technologies that Will Change the Future World" by the United States, and is listed as the first among the "Ten Key Strategic Objectives of the National Pillar" by Japan. Among them, terahertz wave phase control refers to a control technology that delays or advances the transmission time of time-domain terahertz wave spectrum, which has great application prospects in terahertz wave communication, radar and other fields. When two beams of terahertz waves are transmitted at the same time, by adjusting the phase of one beam, cancellation or enhancement can be realized; Adjustment of the Hertzian beam direction. Therefore, a cheap, convenient and widely used terahertz wave phase modulation method is extre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/01
CPCG02F1/0147
Inventor 文天龙李远鹏钟智勇张岱南廖宇龙张怀武
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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