Continuous Wave Observation of Massive Polariton Redistribution by Stimulated Scattering in Semiconductor Microcavities

R. M. Stevenson, V. N. Astratov, M. S. Skolnick, D. M. Whittaker, M. Emam-Ismail, A. I. Tartakovskii, P. G. Savvidis, J. J. Baumberg, and J. S. Roberts
Phys. Rev. Lett. 85, 3680 – Published 23 October 2000
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Abstract

A massive redistribution of the polariton occupancy to two specific wave vectors, zero and 3.9×104cm1, is observed under conditions of continuous wave excitation of a semiconductor microcavity. The “condensation” of the polaritons to the two specific states arises from stimulated scattering at final state occupancies of order unity. The stimulation phenomena, arising due to the bosonic character of the polariton quasiparticles, occur for conditions of resonant excitation of the lower polariton branch. High energy nonresonant excitation, as in most previous work, instead leads to conventional lasing in the vertical cavity structure.

  • Received 5 July 2000

DOI:https://doi.org/10.1103/PhysRevLett.85.3680

©2000 American Physical Society

Authors & Affiliations

R. M. Stevenson1, V. N. Astratov1, M. S. Skolnick1, D. M. Whittaker2, M. Emam-Ismail1, A. I. Tartakovskii3,1, P. G. Savvidis4, J. J. Baumberg4, and J. S. Roberts5

  • 1Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
  • 2Toshiba Research Europe Ltd., Cambridge CB4 4WE, United Kingdom
  • 3Institute of Solid State Physics, RAS, 142432 Chernogolovka, Russia
  • 4Department of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, United Kingdom
  • 5Department of Electronic and Electrical Engineering, Sheffield S1 3JD, United Kingdom

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Vol. 85, Iss. 17 — 23 October 2000

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