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Hexagonal Lattice Photonic Crystal in Active Metallic Microcavity

Published online by Cambridge University Press:  01 February 2011

H. L. Tam ,
R. Huber ,
K. F. Li ,
W. H. Wong ,
Y. B. Pun ,
S. K. So ,
J. B. Xia  and
K. W. Cheah
H. L. Tam
Affiliation:
Department of Physics, Hong Kong Baptist University, Hong Kong SAR, PRC
R. Huber
Affiliation:
Physik-Department E11, TU München James-Franck-Strasse, 85748 Garching, Germany
K. F. Li
Affiliation:
Department of Physics, Hong Kong Baptist University, Hong Kong SAR, PRC
W. H. Wong
Affiliation:
Department of Electronic Engineering, City University of Hong Kong, Hong Kong SAR, PRC
Y. B. Pun
Affiliation:
Department of Electronic Engineering, City University of Hong Kong, Hong Kong SAR, PRC
S. K. So
Affiliation:
Department of Physics, Hong Kong Baptist University, Hong Kong SAR, PRC
J. B. Xia
Affiliation:
Department of Physics, Hong Kong Baptist University, Hong Kong SAR, PRC
K. W. Cheah*
Affiliation:
Department of Physics, Hong Kong Baptist University, Hong Kong SAR, PRC
*
# To whom all correspondence should be addressed to
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Abstract

A hexagonal lattice photonic crystal was fabricated inside the metallic microcavity. And a thin film of Alq3 was incorporated inside the textured cavity as an active medium. The microcavity is designed such that the modified photonic modes due to the textured structure can couple to the excited electronic states of Alq3. This leads to changes in the emission characteristics of Alq3. From the angle-resolved transmission (ARTR) results, the photonic bandgap was observed at all angles from normal incident to 60°. The presence of surface plasmon (SP) was observed in both TM and TE modes of the transmission. Compare to the bulk Alq3 photoluminescence spectrum, significant modification of the photoluminescence (PL) spectrum was observed in the angle-resolved photoluminescence (ARPL). The photoluminescence spectra showed clear suppression in luminescence intensity for the range inside the photonic bandgap. We use decouple approximation for the standing wave modes and derive the photonic waveguide characteristics for two-dimensional textured metallic microcavities. The theoretical result is in good agreement to the experimental result.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 797: Symposium W – Engineered Porosity for Microphotonics and Plasmonics , 2003 , W2.8
Copyright
Copyright © Materials Research Society 2004

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References

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