Analysis of the angular acceptance of surface plasmon Bragg mirrors

M. U. Gonzalez (1, 2) , A. L. Stepanov (3) , Jean-Claude Weeber (4) , A. Hohenau (3) , Alain Dereux (4) , Romain Quidant (2) , J. R. Krenn (3)

1 LPUB - Laboratoire de Physique de l'Université de Bourgogne
2 ICFO - Institut de Ciencies Fotoniques [Castelldefels]
3 Institute for Experimental Physics [Graz]
4 ICB - Laboratoire Interdisciplinaire Carnot de Bourgogne

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. (c) 2007 Optical Society of America.

Domaines: Micro et nanotechnologies/Microélectronique; Optique / photonique; Optique [physics.optics]

M. U. Gonzalez, A. L. Stepanov, Jean-Claude Weeber, A. Hohenau, Alain Dereux, et al.. Analysis of the angular acceptance of surface plasmon Bragg mirrors. Optics Letters, 2007, 32, pp.2704--2706. ⟨hal-00472373⟩