Spectrally broadband channeled imaging polarimeter using polarization gratings
Spectrally broadband channeled imaging polarimeter using polarization gratings
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DOI：
10.1117/12.893771
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发表时间：
2011-09
期刊：
影响因子：
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通讯作者：
M. Kudenov;M. Escuti;E. Dereniak;K. Oka
中科院分区：
文献类型：
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作者：
M. Kudenov;M. Escuti;E. Dereniak;K. Oka
通过将两个相同的偏振光栅（pg）集成到剪切偏振干涉仪中，演示了一种快照通道线性成像（CLI）偏振仪。将PGs串联使剪切与波长成线性比例，从而在成像透镜的焦点处产生白光偏振条纹。这些条纹振幅调制入射Stokes参数对应于线偏振光（S0， S1和S2）。本文从理论上和实验上对CLI偏振仪进行了验证。通过对运动目标的室外测量对该技术进行了进一步验证，并从理论上证明了将系统的测量能力扩展到包括圆偏振光。
A snapshot channeled linear imaging (CLI) polarimeter is demonstrated by incorporating two identical polarization gratings (PGs) into a shearing polarization interferometer. Placing the PGs in series causes the shear to become linearly proportional to the wavelength, thereby generating white-light polarization fringes at the focal point of an imaging lens. These fringes amplitude modulate the incident Stokes parameters corresponding to linearly polarized light (S0, S1, and S2). In this paper, we theoretically and experimentally demonstrate the CLI polarimeter. Additional validation of the technique is conducted through outdoor measurements of moving targets, and extending the measurement capacity of the system to include circularly polarized light is theoretically demonstrated.