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Opt Express. 2010 Aug 30;18(18):19087-94. doi: 10.1364/OE.18.019087.

CCD polarization imaging sensor with aluminum nanowire optical filters.

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  • 1Department of Computer Science and Engineering, One Brookings Drive, Box 1045, Washington University in St. Louis, St. Louis, MO 63130, USA. vgruev@wustl.edu


We report an imaging sensor capable of recording the optical properties of partially polarized light by monolithically integrating aluminum nanowire optical filters with a CCD imaging array. The imaging sensor, composed of 1000 by 1000 imaging elements with 7.4 μm pixel pitch, is covered with an array of pixel-pitch matched nanowire optical filters with four different orientations offset by 45°. The polarization imaging sensor has a signal-to-noise ratio of 45 dB and captures intensity, angle and degree of linear polarization in the visible spectrum at 40 frames per second with 300 mW of power consumption.

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