Polariton dispersion of periodic quantum well structures
A. V. Mintsev+, L. V. Butov+*, C. Ell , S. Mosor , G. Khitrova , H. M. Gibbs
+Institute of Solid State Physics, RAS, 142432 Chernogolovka, Russia *Materials Sciences Division, E. O. Lawrence Berkeley National Laboratory, 94720 Berkeley, California Optical Sciences Center, University of Arizona, 85721 Tucson, Arizona
PACS: 71.35.-y, 71.36.+c
Abstract
We studied polariton dispersion relations of a periodic
quantum well structure with a period in the vicinity of half the
exciton resonance wavelength, i.e. Bragg structure. We classified
polariton modes using an approximation of large quantum well
number. The polariton effective masses are found to be very small,
10-3 - 10-4 of the free electron mass.
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