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Static Fourier-transform hyperspectral imaging full polarimetry

Li Jie Zhu Jing-Ping Qi Chun Zheng Chuan-Lin Gao Bo Zhang Yun-Yao Hou Xun

Static Fourier-transform hyperspectral imaging full polarimetry

Li Jie, Zhu Jing-Ping, Qi Chun, Zheng Chuan-Lin, Gao Bo, Zhang Yun-Yao, Hou Xun
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  • Abstract views:  1598
  • PDF Downloads:  1209
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Publishing process
  • Received Date:  05 July 2012
  • Accepted Date:  22 August 2012
  • Published Online:  05 February 2013

Static Fourier-transform hyperspectral imaging full polarimetry

  • 1. Shaanxi Key Laboratory of Information Photonic Technique, KeyLaboratory for Physical Electronics and Devices of the Ministry of Education, School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China;
  • 2. Department of Information and Communication Engineering, School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an710049, China
Fund Project:  Project supported by the China Postdoctoral Science Foundation (Grant No. 2012M510217) and the National Natural Science Foundation of China (Grant No. 61205187).

Abstract: Spectral imaging and polarimetric imaging are both advanced optical detection techniques. Owing to their wide potential in military and civil communities, these techniques have rapidly developed within the past two decades and become well-recognized tools in remote sensing. In recent years, these two techniques presented a new trend toward merging into the imaging spectropolarimetry, and make the optical remote sensing tend to multi-dimensional and multi-information fusion. However, in conventional imaging spectropolarimeters, rotating polarization elements, electrically controllable components, and microretarder or micropolarizer arrays are typically required. These apparatuses generally suffer from vibration, electrical noise, heat generation, and alignment difficulty. Consequently, the incorporation of mechanical components typically increases the complexity and reduces the reliability of the measurement system. To overcome these drawbacks, we propose a novel method of real-time measuring the spectrum, polarization and imaging of scenes with static birefringent crystal elements in 2010. In this paper, the concept and theory of a sensor based on the method are given. With specially aligned static birefringent retarders, different phase factors are modulated into the Stokes vector of incidence light. After passing through a static birefringent interferometer, the spectrally dependent Stokes parameters are distributed into several separated interferogram channels. With corresponding Fourier-transform demodulation, the wavelength-dependent polarization, spectral and 1-D spatial imaging of objects can be completely obtained with a single snapshot. The simulated and experimental demonstration of the sensor are also presented. This research gives a new way for spectropolarimetric imaging measurement, and provides theoretical and practical support for the development of new space remote sensors.

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