Chinese Optics Letters, 2015, 13 (2): 020501, Published Online: Sep. 25, 2018   

Free space optical beam coupled to surface plasmonic polariton waves via designed grooves in metal film Download: 815次

Author Affiliations
1 Department of Physics, Guizhou University, Guiyang 550025, China
2 Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Science, Beijing 100190, China
Abstract
Surface plasmonic polariton (SPP) waves with complicated wavefronts have important implications in nanophotonic sciences and applications. The surface electromagnetic wave holography method is applied to designed grooves on a metal surface for coupling a plane wave in free space to complicated wavefront SPP waves. The grooves illuminated by the plane wave incident from free space serve as secondary SPP waves sources, that radiate cylindrical SPP waves. New controllable wavefronts originate from these secondary SPP waves interfering with each other, based on the Huygens–Fresnel principle. Several applications of the method are demonstrated, such as converting coupling waves in free space into focusing SPP waves on a metal surface.

Yuegang Chen, Zhiyuan Li. Free space optical beam coupled to surface plasmonic polariton waves via designed grooves in metal film[J]. Chinese Optics Letters, 2015, 13(2): 020501.

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