Image, spectrum and polarization state integration acquisition device and detection method
A technology for acquiring device and polarization state, applied in the field of imaging, can solve the problems of inability to remove by filtering algorithm, crosstalk phenomenon, affecting restored spectral resolution, etc. The effect of low noise ratio
Active Publication Date: 2017-11-21
XI AN JIAOTONG UNIV
7 Cites 12 Cited by
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The invention discloses an image, spectrum and polarization state integration acquisition device and detection method, along an incident light propagation direction, a front telescoping system, an achromatic lambda/4 wave plate array, a polarizer, a Savart polariscope, an analyzer, an imaging lens array and an area array CCD are arranged in sequence in a main optical axis direction, four kinds of modulation is performed on spectrum and polarization information through the achromatic wave plate array, then four intensity spectrum interference images after modulation are obtained through a polarized interferometer formed by the polarizer, Savart polariscope and analyzer, and a target image, and spectrum and polarization state information are precisely restored through Fourier transformation. The defects that the restored spectrum resolution is seriously reduced in measurement of a Stokes vector spectrum by a channel spectrum technology and error distortion exists in the restored spectrum are overcome. A polarization spectrum information restoration result has immunization to Gaussian noise and Poisson noise existing in an instrument, the signal-to-noise ratio of acquired interferogram data is improved, and the problems of low signal-to-noise ratio and poor timeliness in spectrum element time-sharing detection by a conventional measurement method are solved.
Application Domain
Interferometric spectrometryPolarisation spectroscopy
Technology Topic
Image
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- Experimental program(1)
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