Abstract

This letter discusses the design of diffraction structures for the conversion and focusing of the plasmon modes (PMs) of a metal/dielectric interface and thin metal films. The calculation is based on the phase modulation of the PMs that accompanies transmission through a dielectric structure located immediately on the surface where the PMs propagate. Based on electromagnetic modelling, it is shown that the PMs can be phase-modulated by varying the height or length of the structure, as well as by simultaneously varying both parameters. As an example, we consider a trifocal lens for the focusing of PMs.

© 2010 Optical Society of America

Focusing anomalies with binary diffractive optical elements

O. Bouzid, S. Haddadi, M. Fromager, E. Cagniot, K. Ferria, A. Forbes, and K. Ait-Ameur
Appl. Opt. 56(35) 9735-9741 (2017)

Design and fabrication of a diffractive phase element for wavelength demultiplexing and spatial focusing simultaneously

Bi-Zhen Dong, Guo-Qing Zhang, Guo-Zhen Yang, Ben-Yuan Gu, Shi-Hai Zheng, De-Hua Li, Yan-Song Chen, Xiao-Ming Cui, Ming-Ling Chen, and Hong-Du Liu
Appl. Opt. 35(35) 6859-6864 (1996)

Vectorial analysis of a surface plasmon mode diffracted by a thick dielectric lens

Fahimeh Armin and Mir Mojtaba Mirsalehi
J. Opt. Soc. Am. B 34(9) 1872-1877 (2017)

Design of the diffractive optical elements for synthetic spectra

Guangya Zhou, Francis E. H. Tay, and Fook Siong Chau
Opt. Express 11(12) 1392-1399 (2003)

Effect of lens size on the focusing performance of plasmonic lenses and suggestions for the design

Yiting Yu and Hans Zappe
Opt. Express 19(10) 9434-9444 (2011)