Regensburg 2004 – scientific programme
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HL: Halbleiterphysik
HL 12: Poster I
HL 12.30: Poster
Monday, March 8, 2004, 16:30–19:00, Poster A
Reflection from two- and three-dimensional Photonic Crystals — •Marcus Diem1, Suresh Pereira1,2, and Kurt Busch1,3 — 1Institut für Theorie der Kondensierten Materie, Universität Karlsruhe — 2Department of Physics, University of Toronto, Canada — 3School of Optics/CREOL & Department of Physics, University of Central Florida, Orlando, USA
We employ a Scattering-Matrix-Method [1] to calculate transmission- and reflection properties of two- and three-dimensional finite-sized Photonic Crystal structures. The angle and frequency dependent data can be directly compared with measurements [2] and allow one to investigate the quality and parameters of the sample. Peaks in the reflection spectra associated with different Bragg-orders can be used to determine the coupling to the modes of the periodic system. This coupling depends strongly on the surface termination of the Photonic Crystal illustrating certain complications when interpreting measurements using only the bandstructures of bulk systems.
In addidtion, we employ this method to determine mode losses in periodically structured planar waveguides based on optically active polymer films evaporated onto surface-relief gratings.
[1] D.M. Whittaker and I.S. Culshaw, Phys. Rev. B 60, 2610 (1999)
[2] G. von Freymann et.al, Appl. Phys. Lett 83, 614 (2003)