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Novel terahertz dynamic adjustable grating and preparation method thereof

A terahertz and dynamic technology, applied in the field of terahertz wave regulation, can solve problems such as narrow working frequency band, complex manufacturing process of regulation devices, and inability to realize dynamic regulation, and achieve deflection control, good light-splitting effect, simple device preparation and modulation quick effect

Inactive Publication Date: 2020-05-08
NANJING UNIV
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Problems solved by technology

[0003] In recent years, terahertz beam control technology based on active control metamaterials has developed rapidly. The modulation of terahertz waves can be achieved by integrating tunable materials on metal resonant structures and changing the temperature, magnetic field or optical pump. Complex process and narrow working frequency band
The grating usually used for terahertz spectroscopy adopts a metal wire grid structure, and this kind of terahertz grating cannot be dynamically adjusted

Method used

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  • Novel terahertz dynamic adjustable grating and preparation method thereof
  • Novel terahertz dynamic adjustable grating and preparation method thereof
  • Novel terahertz dynamic adjustable grating and preparation method thereof

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of use of the present invention, after having read the present invention, those skilled in the art will understand each aspect of the present invention The modifications of all equivalent forms all fall within the scope defined by the appended claims of the present application.

[0018] 1. Design with VO 2 Material-based novel terahertz dynamically tunable grating

[0019] For design with VO 2 Materials-based novel terahertz dynamically tunable gratings, with a wide variety of grating structures studied. Most gratings are made of metal and are not tunable. VO 2 The material can undergo a phase transition near room temperature and produce a steep and repeatable insulating-metal phase transition, and the electrical conductivit...

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Abstract

The invention discloses a novel terahertz dynamic adjustable grating. The novel terahertz dynamic adjustable grating comprises a SiO2 substrate and a VO2 wire grating structure growing on the SiO2 substrate. The invention further discloses a preparation method and a modulation method of the terahertz dynamic adjustable grating. The structure is simple. The transition metal oxide vanadium dioxide (VO2) film is used and processed into the wire grid structure, and the function switching from the terahertz reflector to the grating is realized by utilizing the VO2 insulator-metal phase change characteristic. The device modulation is simple and fast, and the working band is wide.

Description

technical field [0001] The invention belongs to the technical field of terahertz wave regulation, and in particular relates to a novel terahertz dynamically adjustable grating and a preparation method thereof. Background technique [0002] Terahertz technology has developed rapidly in the past two decades, and has broad application prospects in high-speed wireless communication, terahertz imaging, security detection, astronomy and other fields. High-efficiency broadband terahertz beam steering and optical splitting devices are the core components in terahertz communication and spectral analysis systems. [0003] In recent years, terahertz beam control technology based on active control metamaterials has developed rapidly. The modulation of terahertz waves can be achieved by integrating tunable materials on metal resonant structures and changing the temperature, magnetic field or optical pump. The process is complex and the working frequency band is narrow. Usually, the gra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/18C23C14/58C23C14/35C23C14/08
CPCG02B5/1847G02B5/1857C23C14/35C23C14/083C23C14/5873
Inventor 吴敬波蔡佳成陈本纹张彩虹金飚兵陈健吴培亨
Owner NANJING UNIV
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