Laser active coherence balancing detection polarization analyzer

Abstract

A laser active coherence balancing detection polarization analyzer comprises a laser, a vibration spectral module, a polarization generator module, an echo receiving optical antenna, an echo receiving optical antenna, an echo polarization dispersion prism, a horizontal vibration processing module, a vertical vibration processing module and a data processor. The vibration spectral module comprises a first spectroscopic prism, a second optical prism, a first half wave plate and a second half wave plate; the horizontal vibration processing module comprises a first 90 degree 2*4 a pace light bridge connector, a first left channel balance receiver, a first right channel balancing receiver and a first complexizer. The vertical vibration processing module comprises a second 90 degree 2*4 a pace light bridge connector, a second left channel balance receiver, a second right channel balancing receiver and a second complexizer. The laser active coherence balancing detection polarization analyzer has the advantages of high receiving sensitivity, high detection ability, high signal-to-noise ratio and wide operating range. The laser active coherence balancing detection polarization analyzer is an important technology improvement to obtain the target polarization information by active lighting.

Description

technical field [0001] The invention relates to the measurement of target polarization reflection characteristics, in particular to a laser active coherent balance detection polarization analyzer based on a 90° 2×4 space optical bridge. Background technique [0002] The active polarization detection technology using laser as the illumination light source has become a research hotspot at home and abroad in recent years. The Mueller matrix is ​​calculated by the change of the polarization state after the reflection of the target, and the characteristics of the reflected light intensity, polarization degree and depolarization of the target are analyzed, and then the target can be obtained. own characteristics. Traditional polarization detection systems often use direct detection methods, which are mostly used in industrial detection and medical biology. In the field of remote sensing detection and military target recognition, the requirements for the sensitivity, detection cap...

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Problems solved by technology

These imaging systems all use traditional direct detection methods to detect all Stokes parameters,

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