A cascaded liquid crystal optical phased array antenna, its forming method and its application method

Abstract

A cascaded liquid crystal optical phased array antenna, forming and application method. First, the first glass substrate of the liquid crystal optical phased array antenna is used as a common substrate, and a conductive film is coated on one side of the common substrate as the third electrode layer. A glass substrate is installed on the same side as an inclined second glass substrate, and a conductive film is coated on the side of the second glass substrate close to the first glass substrate as the fourth electrode layer, and then canned between the third electrode layer and the fourth electrode layer The liquid crystal material is used as the second liquid crystal layer, and then a continuous voltage is applied to the fourth electrode layer to continuously deflect the incident beam, and a discrete voltage is applied to the first electrode layer of the liquid crystal optical phased array antenna to conduct a large-angle incident beam Discrete scanning, and finally apply a discrete voltage to the first electrode layer of the liquid crystal optical phased array antenna to perform large-angle discrete scanning of the incident beam, and apply a continuous voltage to the fourth electrode layer to continuously deflect the incident beam.

Description

technical field [0001] The invention relates to a cascaded liquid crystal optical phased array antenna, forming and application methods, and belongs to the technical fields of satellite laser communication and laser radar. Background technique [0002] At present, the laser communication system researched at home and abroad is a point-to-point single-link data transmission system, which uses a mechanical catch-and-follow mechanism. Due to the long distance of the satellite laser communication link and the limited laser emission power, the divergence angle of the laser beam needs to be as close as possible to the diffraction limit. Limited by the divergence angle of the laser beam, the space laser communication system using a mechanical scanning mechanism can only realize point-to-point laser communication. Laser communication terminals using a mechanical scanning mechanism are large in size and weight, and it is difficult to meet the miniaturization and light weight require...

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Problems solved by technology

[0004] The problem solved by the technology of the present invention is: aiming at the defect that the driving voltage of the liquid crystal optical phased array antenna is a discrete voltage and the beam cannot be continuously scanned in the prior art, a method for realizing the liquid crystal optical phased array antenna is proposed, which can realize the large beam The angle deflection control can also realize the continuous deflection control of the beam, which ensures the effective and continuous scanning of the scanning area by the space laser communication system

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