Terahertz light guide antenna space power synthesizer

Abstract

The invention discloses a terahertz light guide antenna space power synthesizer. The terahertz light guide antenna space power synthesizer comprises a femtosecond laser, a reflecting mirror, a 1 / 2 wave plate, a beam splitter, a precise displacement platform, a displacement platform controller, a polarizing film, a focusing lens, a photoconduction antenna, a terahertz lens, a zinc telluride electro-optical crystal, a 1 / 4 wave plate, a Wollaston prism, a photoelectric balance detector, a phase-locked amplifier, a high-voltage modulator and a data acquisition and processing system. The device can keep an ultra wide band of terahertz waves radiated by the photoconduction antenna, obtain terahertz waves higher than waves of a single photoconduction antenna in power and achieve power synthesis of terahertz waves radiated in a certain spatial point of two or more photoconduction antennae.

Description

technical field [0001] The invention belongs to the application field of terahertz technology, and in particular relates to a space power combining device of a terahertz photoconductive antenna. Background technique [0002] Terahertz wave is a precious electromagnetic resource that has not been fully developed and utilized by human beings. Its unique properties have brought profound impacts on broadband communication, radar, electronic countermeasures, electromagnetic weapons, astronomy, medical imaging, non-destructive testing, security inspection and other fields. All countries attach great importance to the development and research of terahertz. At present, the high-power ultra-broadband terahertz radiation source has become one of the hot issues in the terahertz field, and it has great application prospects in the fields of material analysis, medical imaging, non-destructive testing and safety inspection. [0003] There are two main ways to generate ultra-broadband ter...

AI Technical Summary

Problems solved by technology

According to the mechanism of terahertz radiation generated by photoconductive antennas, it is difficult to improve the radiation output of a single terahertz photoconductive antenna only by optimizing the structure of photoconductive antennas, so the power radiation of a single photoconductive antenna is difficult to meet the requirements of "ultra-broadband" and "high power" at the same time. Requirements, high-power ultra-broadband terahertz radiation must be achieved by means of spatial power combining of multiple photoconductive antennas

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