Electrodeless passive pulsed electric field detector

Abstract

The invention belongs to the electromagnetic field and microwave technological field and relates to an electrodeless passive pulsed electric field detector. The bias of the detector can be set, the probe of the detector is passive, the probe can be an electrodeless probe, and the problem of the application of the detector to environments such as nuclear electromagnetic pulses, lightning electromagnetic pulses and ultra-wideband environments can be solved. The structure of the detector comprises a light source and a front end probe; the light source is a tunable polarization narrow-spectrum light source; the front end probe comprises a tube shell and a crystal; the tube shell and the crystal are both cuboid; the crystal is encapsulated in the tube shell; a waveguide is prepared on the surface of the crystal by means of titanium diffusion, wherein the waveguide can be an x-cut y-transmission waveguide, a z-cut y-transmission waveguide, a y-cut x-transmission waveguide, or a z-cut x-transmission waveguide; two ends of the waveguide on the crystal are respectively used as an optical signal input end and an optical signal output end; the input end is coupled with a polarization-maintaining optical fiber; the polarization direction of input light is aligned with an o-optical main axis and an e-optical main axis in the direction of 45 degrees; the output end is at first in -45-degreecoupling with an analyzer, and then is in aligned coupling with the slow axis of the polarization-maintaining optical fiber.

Description

technical field [0001] The invention belongs to the field of electromagnetic field and microwave technology, and relates to a passive pulse electric field detector with an electrodeless structure. Background technique [0002] The high-altitude electromagnetic pulse (HEMP) has high field strength amplitude, wide frequency range, and wide coverage area, which poses a threat to electronic and electrical equipment and systems. At present, the electromagnetic pulse field environment mainly adopts the electric field peak value of 50kV / m, front edge of 2.5ns, and half-height width of 23ns specified in IEC6100-2-9. The corresponding nuclear electromagnetic pulse simulator is also constructed according to this standard. In recent years, with the development of various experiments under the HEMP simulation device, higher and higher requirements have been put forward for the measurement of the electric field. The electromagnetic pulse measurement in the HEMP environment requires the ...

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Problems solved by technology

[0004] In order to address the existing technical defects, in the present invention, a passive pulsed electric field detector based on an electrodeless structure of lithium niobate crystal is designed and formed, and the detector

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