A double‐lined metasurface for plasmonic complex‐field generation. Issue 2 (29th January 2016)

• Record Type: Journal Article
• Authors: Song, Eui‐Young; Lee, Seung‐Yeol; Hong, Jongwoo; Lee, Kyookeun; Lee, Yohan; Lee, Gun‐Yeal; Kim, Hwi; Lee, Byoungho
• Is Part Of: Laser & photonics reviews. Volume 10:Issue 2(2016:Mar.)
• Page Start: 299
• Page End: 306
• Publication Date: 2016-01-29
• Subjects: Surface plasmon polaritons -- metasurfaces -- near‐field generation -- caustics -- Airy beam; Lasers -- Periodicals; Photonics -- Periodicals; Lasers -- Périodiques; Photonique -- Périodiques; 621.36
• DOI: 10.1002/lpor.201500245
• Languages: English
• ISSNs: 1863-8880

Abstract

Abstract : A novel method for generating a plasmonic complex field propagating with arbitrary curvatures is proposed. As a unit cell, two facing nanoslits are used for tuning both the amplitude and the phase of excited SPPs as a function of their tilted angles. For verification of the proposed design rule, we experimentally demonstrate some plasmonic caustic curves and Airy plasmons. Abstract: Since the surface plasmon polariton (SPP) has received a great deal of attention because of its capability of guiding light within the subwavelength scale, finding methods for arbitrary SPP field generation has been a significant issue in the area of integrated optics. To achieve such a goal, it will be necessary to generate a plasmonic complex field. In this paper, we propose a novel method for generating a plasmonic complex field propagating with arbitrary curvatures by using double‐lined distributed nanoslits. As a unit cell, two facing nanoslits are used for tuning both the amplitude and the phase of excited SPPs as a function of their tilted angles. For verification of the proposed design rule, we experimentally demonstrate some plasmonic caustic curves and Airy plasmons.