13 Spinoptics in Plasmonics
487
m
μ
2
a
x
y
500
600
700
800
900
1000
0.0
0.2
0.4
0.6
0.8
1.0
transmissivity (arb. units)
wavelength (nm)
m
μ
1
Λ
-2
-1
0
1
2
0.0
0.2
0.4
0.6
0.8
1.0
intensity (arb. units)
Δk, (2π/ )
σ in = -1
σ in = +1
σ out = -1
σ out = +1
(c)
(b)
(a)
a
Fig. 13.16 a Transmission spectra of the plasmonic chain consisting of coaxial nanoapertures with
inner/outer radii of 75/125 nm, with period of Φ = 470 nm and a length of 84.6 µm. The blue and red
lines/arrows correspond to transversal and longitudinal polarization excitations, respectively. The
inset shows SEM image of the chain. b SEM image of a curved chain whose local orientation τ is
varied linearly along the x-axis with a rotation period of a = 9 µm, and a structure length of 135 µm.
c The spin-dependent momentum deviation for the OSHE-LI, at a wavelength of 780 nm. The red
and blue lines stand for incident right- and left-handed circularly polarized light, respectively
(λ in = ±1). λ out denotes the spin state of the scattered light. Reprinted with permission from Ref.
[35]. Copyright 2011 American Chemical Society