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Terahertz wave modulator based on organic polymer film

A technology of polymer thin film and terahertz wave, which is applied in the field of communication, imaging and terahertz spectroscopy, can solve the problems of high device manufacturing cost, expensive manufacturing cost, narrow working bandwidth, etc., and achieve wide modulation bandwidth, mature manufacturing method, modulation high depth effect

Active Publication Date: 2014-08-27
CAPITAL NORMAL UNIVERSITY
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Problems solved by technology

Scientists in Japan and South Korea use Si as the substrate, and use a thermal evaporation method to attach a layer of nano-scale organic material (CuPc) film on the surface. The modulation depth of this modulator can reach more than 55%, but the production cost is very high. Expensive [Hyung Keun Yoo, APL, 99, 061108, 2011]
[0004] At present, terahertz modulators have the following problems: low operating frequency and narrow operating bandwidth, generally only a few GHz; low modulation depth, poor signal-to-noise ratio, generally around 55%; low modulation rate, generally on the order of MHz; Device manufacturing costs are high, material costs are high, and processing is complicated

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  • Terahertz wave modulator based on organic polymer film
  • Terahertz wave modulator based on organic polymer film

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Embodiment Construction

[0022] The invention provides a terahertz wave modulator based on an organic polymer film, the structure of which is as follows figure 1 As shown, it includes a dielectric substrate 2 and an organic polymer thin film 1 attached to the surface of the dielectric substrate 2. The thin film 1 is formed by uniformly spin-coating an organic polymer on the dielectric substrate 2 by a spin coating method. in:

[0023] The dielectric substrate 2 is a silicon material (abbreviated as Si) with high transmittance to terahertz waves, has a high impedance value of 10,000 ohms, and has a thickness of 0.1-2mm.

[0024] The organic polymer of the organic polymer film 1 is a conjugated polymer material, which can be selected from MEH-PPV, poly 2-(2-ethylhexyloxy)-5-methoxyphenylene vinylene; PFO, (poly(9 ,9-Di-n-octylfluorenyl-2,7-diyl)); F8BT, poly[(9,9-Di-n-octylfluorenyl-2,7-diyl)-alt-(benzo[2 ,1,3]thiadiazole-4,8-diyl)]; P3HT, poly(3-hexylthiophene-2,5-diyl) and so on. For example, in th...

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Abstract

The invention discloses a terahertz wave modulator based on an organic polymer film. The terahertz wave modulator comprises a dielectric substrate and the organic polymer film attached to the surface of the dielectric substrate. The dielectric substrate is made of silicon materials with a high resistance value, the thickness of the dielectric substrate ranges from 0.1 mm to 2 mm, the organic polymer film is formed in the mode that the dielectric substrate is coated with poly2-(2-ethyl oxethyl)-5-ethynylanisole in a spun mode, and the thickness of the organic polymer film ranges from 100 nm to 250 nm. The light-control terahertz wave modulator is easy to manufacture, low in manufacturing cost, high in modulation depth, stable and reliable.

Description

technical field [0001] The invention belongs to the field of terahertz spectroscopy, communication and imaging, and relates to a terahertz wave modulator based on an organic polymer film. Background technique [0002] Terahertz refers to electromagnetic radiation waves in the frequency range of 0.1THz to 10THz. This band is between microwave and light wave, and it is the intersection field of electronics and photonics. Due to the unique properties of transient, low energy and coherence, terahertz waves have great scientific value and broad application prospects in many fields such as nondestructive testing, wireless communication, military radar, medical and health care, etc. In recent years, many research groups have carried out research in the field of terahertz wireless communication. Due to the characteristics of the frequency band to which terahertz waves belong, terahertz wireless communication has the characteristics of rich frequency band resources, good confidenti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/01
Inventor 张波和挺沈京玲陈天霁臧梦迪
Owner CAPITAL NORMAL UNIVERSITY
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