Open AccessFocussing light through a stack of toroidal channels in PMMA
Author(s) -
Tieh-Ming Chang,
Sébastien Guenneau,
Jérôme Hazart,
Stefan Enoch
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.016154
Subject(s) - optics , metamaterial , lithography , toroid , materials science , bandwidth (computing) , ranging , lens (geology) , transformation optics , stack (abstract data type) , electron beam lithography , physics , optoelectronics , telecommunications , computer science , resist , plasma , layer (electronics) , quantum mechanics , composite material , programming language
We propose a transformational design of an axi-symmetric gradient lens for electromagnetic waves. We show that a metamaterial consisting of toroidal air channels of diameters ranging from 23 nm to 190 nm in a matrix of Polymethylmethacrylate (PMMA) allows for a focussing effect of light over a large bandwidth i.e. [600-1000] nm. We finally propose a simplified design of lens allowing for a two-photon lithography implementation.