Method and system for generating electromagnetic pulse radiation with superwide band ignited by optical fiber laser

Abstract

A method for forming ultra-broadband electromagnetic pulse radiation and a system for realizing the method, which uses an ultra-short pulse fiber laser to output an ultra-short laser pulse to trigger a light source, amplifies and triggers a photoconductive switch with a bias voltage, and the bias power pulse and the ultra-short pulse The short-pulse fiber laser triggers optical synchronization, and the photoconductive switch outputs ultra-short electrical pulses, which are sent to the ultra-broadband antenna to convert electrical energy into electromagnetic energy. The ultra-broadband antenna radiates in space to form ultra-broadband electromagnetic pulse radiation. The invention solves the technical problems of low integration and bulky volume in the background technology. The invention is easy to generate picosecond-level high-voltage electric pulses, and the frequency band of the output electromagnetic pulses can reach the range of hundreds of GHz to THz, and can be applied to the fields of electronic countermeasures, ultra-wideband radar target detection and the like.

Description

technical field [0001] The invention belongs to the technical field of ultra-broadband electromagnetic pulse radiation, and is mainly used for electronic countermeasures and target recognition. In particular, it relates to a fiber laser triggered ultra-broadband electromagnetic pulse radiation forming method and its realization system. Background technique [0002] UWB electromagnetic pulses usually refer to electromagnetic waves whose bandwidth to center frequency ratio is greater than 25%, that is, there are [0003] [(f h -f 1 ) / ( f h+f 1 ) / 2]>1 / 4 [0004] Where: f h and f 1 Respectively represent the upper and lower limit frequencies of electromagnetic waves. In the time domain, the ultra-broadband electromagnetic pulse is characterized as a pulse with a very steep rising edge and a very short duration, which can generally reach ps (10 -12 s) level; in the frequency domain, it has an extremely wide frequency band reaching GHz or even THz level. Ultra-wideban...

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a method for forming ultra-broadband electromagnetic pulse radiation and a fiber laser triggering ultra-broadband electromagnetic pulse radiation system, which solves the problem that it is difficult to obtain picosecond-level pulses or have poor insulation and stability in the background technology, or Technical issues with bulky size and poor mobility

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