Analysis of the angular acceptance of surface plasmon Bragg mirrors.
We analyze an important aspect of the behavior of surface plasmon polariton (SPP) Bragg mirrors: the dependence of the angular acceptance for reflection on the incidence angle. By means of leakage radiation microscopy, both in direct and Fourier space, we observe that the angular acceptance diminishes for increasing incidence angles. This effect, which can considerably affect the design of devices based on these elements, is shown to be the consequence of the decrease of the bandgap width with increasing incidence angle.
González
María Ujué
MU
ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860, Castelldefels (Barcelona), Spain. maria-ujue.gonzalez@icfo.es
Stepanov
Andrey L
AL
Weeber
Jean-Claude
JC
Hohenau
Andreas
A
Dereux
Alain
A
Quidant
Romain
R
Krenn
Joachim R
JR
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D007909:Lenses; D008027:Light; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000295:instrumentation*