Terahertz light guide antenna space power synthesizer

A technology of a photoconductive antenna and a composite device, which is applied in the application field of terahertz technology, can solve the problems that it is difficult to improve the radiation output of a single terahertz photoconductive antenna, and the power radiation of the photoconductive antenna is difficult to satisfy at the same time, so as to improve detection sensitivity, avoid multiple reflections, The effect of reducing reflection peaks

Inactive Publication Date: 2014-10-01
SOUTHWEAT UNIV OF SCI & TECH
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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 s

Method used

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  • Terahertz light guide antenna space power synthesizer
  • Terahertz light guide antenna space power synthesizer

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Embodiment Construction

[0030] A terahertz photoconductive antenna spatial power combining device of the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Such as figure 1 As shown, the femtosecond laser emitted by the femtosecond laser 1 in the terahertz photoconductive antenna space power combining device is divided into pump light and probe light after passing through the mirror 2, 1 / 2 wave plate 3 and beam splitter 4, and the probe light After mirror 5, mirror 6, mirror 7, mirror 8, polarizer 9, and focusing lens 10, it is focused on the ZnTe electro-optic crystal 36; the pumping light passes through the precision displacement platform 11, mirror 12, mirror 13. After the 1 / 2 wave plate 14, mirror 15, and beam splitter 16, it is divided into two beams of probe light, and one beam of pump light passes through the precision displacement platform 17, mirror 18, mirror 19, mirror 20, focusing The lens 21 and the reflector 22 are focused ...

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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...

Claims

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Application Information

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IPC IPC(8): G02F1/03
Inventor 尚丽平邓琥李小霞夏祖学陈俊学李占锋王顺利武志翔
Owner SOUTHWEAT UNIV OF SCI & TECH
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