Terahertz electronic control beam scanning optical link

Abstract

The invention provides a terahertz electronic control beam scanning optical link. The optical link comprises a beam scanning feed source system, a primary reflection surface and a focusing lens. The beam scanning feed source system is used for emitting a conical scanned terahertz wave beam with wave beam scanning characteristics. The primary reflection surface enables the conical scanned terahertz wave beam to be converted into terahertz wave beams which are distributed in parallel in a space, and then enables the terahertz wave beams to be reflected to the focusing lens. The focusing lens achieves the scanning and focusing of the terahertz wave beams. The optical link can quickly obtain the information of an imaging plane through the focusing scanning of the imaging plane, and can be applied in the fields of terahertz imaging, regional monitoring radars, lossless detection and target quick recognition and tracking.

Description

technical field [0001] The invention relates to the technical field of security inspection equipment, in particular to a terahertz electronically controlled beam scanning optical link. Background technique [0002] Terahertz waves generally refer to electromagnetic waves with a frequency between 0.1THz and 10THz, which is a frequency band that people rarely study and use. Because terahertz waves have the advantages of high resolution and can penetrate non-polar materials, terahertz imaging systems have great application prospects in many fields such as security detection, anti-terrorism and stability maintenance, and have attracted great attention in the past decade. . [0003] Putting the terahertz imaging system at the entrance of airport security checks and important places can realize non-contact security detection, and can detect dangerous and prohibited items such as drugs, explosives, guns, and daggers hidden on people through clothing and other obstructions. At pre...

AI Technical Summary

Problems solved by technology

At present, in order to obtain higher spatial resolution and scan imaging on two-dimensional surfaces, existing terahertz imaging systems mostly use the rotation or swing of one or more reflective surfaces to realize two-dimensional beam scanning. Difficult to process and high cost

In addition, due to the use of mechanical scanning to image the two-dimensional surface, the imaging time is as long as several seconds or even tens of seconds, so the practical application value of the system is greatly reduced

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