Triple Wollaston-prism complete-Stokes imaging polarimeter.
Triple Wollaston-prism complete-Stokes imaging polarimeter.
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DOI：
10.1364/ol.38.003874
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发表时间：
2013-10
期刊：
影响因子：
3.6
通讯作者：
J. Perreault
中科院分区：
文献类型：
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作者：
J. Perreault
偏振成像技术是空间科学、地球科学、生物学、国防、国家安全和工业遥感的有力工具。偏振测量提供了关于可见光和红外波长的场景的补充信息。例如，表面纹理、材料成分和分子结构将影响反射、散射或发射光的偏振状态。我们展示了一个成像偏振计的设计，使用三个沃拉斯顿棱镜，解决了与移动遥感平台相关的几个技术挑战。这种紧凑的设计没有移动的偏振元件，并在光瞳（或傅立叶）平面中分离偏振分量，类似于光栅光谱仪的工作方式。此外，这一概念使同时表征非偏振，线性和圆形组件的光学偏振。从可见光波长的原型，这种成像偏振仪的结果，演示远程敏感性的材料特性。这项工作使新的遥感能力，并提供了一个可行的设计概念，扩展到红外波长。
Imaging polarimetry is emerging as a powerful tool for remote sensing in space science, Earth science, biology, defense, national security, and industry. Polarimetry provides complementary information about a scene in the visible and infrared wavelengths. For example, surface texture, material composition, and molecular structure will affect the polarization state of reflected, scattered, or emitted light. We demonstrate an imaging polarimeter design that uses three Wollaston prisms, addressing several technical challenges associated with moving remote-sensing platforms. This compact design has no moving polarization elements and separates the polarization components in the pupil (or Fourier) plane, analogous to the way a grating spectrometer works. In addition, this concept enables simultaneous characterization of unpolarized, linear, and circular components of optical polarization. The results from a visible-wavelength prototype of this imaging polarimeter are presented, demonstrating remote sensitivity to material properties. This work enables new remote sensing capabilities and provides a viable design concept for extensions into infrared wavelengths.