Manipulation of Surface Plasmon Polaritons by Phase Modulation of Source Field with Inverse Problem Algorithm

The predetermined field distributions can be achieved the propagation of surface plasmon polaritons （SPPs） by phase modulation of the source field to manipulate The modulations of the radius of the circular slit are according to the phase distributions on the slit, which are calculated by using the...

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Bibliographic Details
Published inChinese physics letters Vol. 31; no. 5; pp. 152 - 156
Main Author 刘春香 梁国涛 张美娜 李振华 程传福
Format Journal Article
LanguageEnglish
Published 01.05.2014
Subjects
Algorithms
Circularity
Fluid flow
Plasmonics
Plasmons
Polaritons
Slits
Vortices
启发式方法
操作
相位调制
算法
表面几何形状
表面等离子体
表面等离子激元
逆问题
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/31/5/057306

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Summary:The predetermined field distributions can be achieved the propagation of surface plasmon polaritons （SPPs） by phase modulation of the source field to manipulate The modulations of the radius of the circular slit are according to the phase distributions on the slit, which are calculated by using the Gerchberg Saxton algorithm with the known field. We design the surface geometric shape of the radius-varied circular slit for exciting the SPP field with the linear, triangular, square and circular distribution characteristics, respectively. The slit structure designed for the circular field distribution is a plasmonic vortex lens that can be used to generate the vortex with the specified size of the primary ring, which shows that this heuristic method has the potential to devise plasmonic devices.
Bibliography:11-1959/O4
LIU Chun-Xiang, LIANG Guo-Tao, ZHANG Mei-Na, LI Zhen-Hua, CHENG Chuan-Fu（ 1 College of Physics and Electronics, Shandong NormM University, Jinan 250014 2 Qilu University of Technology, Jinan 250353）
The predetermined field distributions can be achieved the propagation of surface plasmon polaritons （SPPs） by phase modulation of the source field to manipulate The modulations of the radius of the circular slit are according to the phase distributions on the slit, which are calculated by using the Gerchberg Saxton algorithm with the known field. We design the surface geometric shape of the radius-varied circular slit for exciting the SPP field with the linear, triangular, square and circular distribution characteristics, respectively. The slit structure designed for the circular field distribution is a plasmonic vortex lens that can be used to generate the vortex with the specified size of the primary ring, which shows that this heuristic method has the potential to devise plasmonic devices.
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ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/31/5/057306