Theoretical reexamination of the cross conversion between surface plasmon polaritons and quasi-cylindrical waves |
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| Authors: | Li Guangyuan Cai Lin Xiao Feng Xu Anshi |
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| Institution: | State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing, 100871, China. gyli_2008@hotmail.com |
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| Abstract: | The cross conversion between surface plasmon polaritons (SPPs) and quasi-cylindrical waves (CWs) is theoretically reexamined. Except for the CW-to-SPP conversion, we find the SPP-to-CW conversion, as well as the reflection and transmission of the CW, plays an indispensable role in the interaction between SPPs and light via periodic grooves. The completeness of the whole scattering coefficients is emphasized by an SPP-CW model proposed to quantitatively predict the SPP excitation efficiency for any number of periodic grooves. |
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