Passive static triangle common path interference imaging spectral full-polarization detecting device

Abstract

The invention relates to a passive static triangle common path interference imaging spectral full-polarization detecting device, which comprises a fronting optical telescopic system. The rear part of the fronting optical telescopic system is provided with a static all-optical modulating module; the rear part of the static all-optical modulating module is provided with a Sagnac static interference imaging spectrometer; the rear part of the Sagnac static interference imaging spectrometer is provided with an imaging mirror group; the rear part of the imaging mirror group is provided with a detector which is connected with a signal acquiring and processing system; after light which is emitted by a target source is collimated and then subjected to phase modulation, the modulated transmission light is changed into two beams of parallel polarized light; the two beams of light are converged on the detector after passing through the imaging mirror to form the image and generate interference; and then a signal received by the detector is sent to the signal acquiring and processing system to be processed. The device has the characteristics of simple and compact structure, no moving parts, large light quantity and capability of acquiring target two-dimensional space images, one-dimensional spectral information and complete polarization information once.

Description

technical field [0001] The invention relates to the technical field of optical instruments, in particular to a three-in-one passive static triangular co-channel interference imaging spectrum full polarization detection device capable of simultaneously obtaining target two-dimensional intensity, interference spectrum and full polarization characteristics. Background technique [0002] In the 1980s, the American Aerodynamics Laboratory (JPL) proposed the concept of an imaging spectrometer, which integrates an imager and a spectrometer, and can simultaneously obtain two-dimensional spatial information and one-dimensional spectral information of the target, which has attracted great attention from various countries. In more than 20 years, imaging has developed from a multi-channel dispersive imaging spectrometer to a hyperspectral interferometric imaging spectrometer, among which the static triangular co-channel interferometric imaging spectrometer represented by the Sagnac struc...

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Problems solved by technology

[0004] In view of the problem that the current Sagnac hyperspectral imager cannot obtain the full polarization characteristics of the target, the purpose of the present invention is to provide a simple and compact structure, no moving parts, large luminous flux, and one-time acquisition of the target two-dimensional space Passive static triangular co-channel interferometric imaging spectrum full polarization detection device with image, one-dimensional spectral information and complete polarization information

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