期刊
OPTICS LETTERS
卷 36, 期 13, 页码 2498-2500出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.36.002498
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- Defense Advanced Research Projects Agency (DARPA) [N66001-10-1-4008]
We propose a quarter-wave plate based on nanoslits and analyze it using a semianalytical theory and simulations. The device comprises two nanoslits arranged perpendicular to one another where the phases of the fields transmitted by the nanoslits differ by lambda/4. In this way, the polarization state of the incident light can be changed from linear to circular or vice versa. The plasmonic nanoslit wave plate is thin and has a subwavelength lateral extent. We show that the predictions for the phase shift obtained from a semianalytical model are in very good agreement with simulations by the finite difference time domain method. (C) 2011 Optical Society of America
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