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Light pulse propagation in three-dimensional photonic crystals

Published online by Cambridge University Press:  17 March 2011

H. Kitano ,
F. Minami ,
T. Sawada ,
S. Yamaguchi  and
K. Ohtaka
H. Kitano
Affiliation:
Department of Physics, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8551, Japan
F. Minami
Affiliation:
Department of Physics, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8551, Japan
T. Sawada
Affiliation:
National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
S. Yamaguchi
Affiliation:
Center for Frontier Science, Chiba University, Chiba 263-8522, Japan
K. Ohtaka
Affiliation:
Center for Frontier Science, Chiba University, Chiba 263-8522, Japan
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Abstract

The phase characteristics of transmitted optical pulses in three-dimensional photonic crystals were investigated in the frequency and time domain by using the spectrally resolved cross-correlation technique. The temporal evolution of femtosecond pulses passing through polystyrene colloidal crystals exhibits a large phase distortion near the stop bands. The phase discontinuity around the band gap was observed in the frequency-domain. The phase of the transmitted pulses is found to change by π across the band gap. The dispersion curve estimated from the phase shift shows good correspondence with those calculated from a photonic band calculation. The group velocity significantly slows down near the stop bands. A large change of the group velocity dispersion is also observed near the band edges. These results are in good agreement with the band theory.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 694: Symposium K – Microphotonics 2001–Materials, Physics and Applications , 2001 , K1.3
Copyright
Copyright © Materials Research Society 2002

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