Title:
TUNABLE TERAHERTZ SIGNAL DEFLECTOR AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/088203
Kind Code:
A1
Abstract:
A tunable terahertz signal deflector (13) and a preparation method therefor, which relate to the field of optoelectric metering technology. The tunable terahertz signal deflector comprises: a first transparent substrate (1) and a second transparent substrate (6) which are opposingly arranged, as well as a liquid crystal layer (8), and further comprises transparent electrode layers (2, 5) and photo-alignment layers (3, 4); the photo-alignment layers (3, 4) have control patterns with molecule orientations in a periodic gradual distribution along a certain direction, and are used for controlling liquid crystal molecule orientations in the liquid crystal layer (8) to be in a periodic gradual distribution along a certain direction, forming a geometric phase-based blazed grating phase distribution, and when a circularly polarized terahertz signal is incident, said signal can be deflected at a specific angle. The deflector (13) can deflect a terahertz signal at a specified angle, and by adding electricity on a transparent electrode, switching of signal deflection and non-deflection functions can be achieved; said deflector has the characteristics of being suitable for a broad wave band, having a miniaturized form, being easy to integrate, and being low-cost, and has great application potential for terahertz communication, etc.
Inventors:
SHEN YANCHUN (CN)
WANG JINLAN (CN)
WANG JINLAN (CN)
Application Number:
PCT/CN2020/126014
Publication Date:
May 05, 2022
Filing Date:
November 03, 2020
Export Citation:
Assignee:
GUANGZHOU RAILWAY POLYTECHNIC (CN)
International Classes:
G02F1/29
Foreign References:
| CN106959547A | 2017-07-18 | |||
| CN109212796A | 2019-01-15 | |||
| CN109407420A | 2019-03-01 | |||
| CN103064226A | 2013-04-24 | |||
| US5193130A | 1993-03-09 | |||
| CN213042096U | 2021-04-23 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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