Ray optics at a deep-subwavelength scale: a transformation optics approach.
We present a transformation optics approach for molding the light flow at the deep-subwavelength scale, using metamaterials with uniquely designed dispersion. By conformal transformation of the electromagnetic space, we develop a methodology for realizing subwavelength ray optics with curved ray trajectories. This enables deep-subwavelength-scale beams to flow through two- or three-dimensional spaces.
NSF Nanoscale Science and Engineering Center, University of California, Berkeley, California 94720, USA.
Seunghoon
S
Han
Yi
Y
Xiong
Dentcho
D
Genov
Zhaowei
Z
Liu
Guy
G
Bartal
Xiang
X
Zhang