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Conferences > QELS > 1995 > QThG > QThG28
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1995),
  • paper QThG28

Picosecond dynamics of hot excitonic molecules in CdSe: energy relaxation and radiative decay

A. S. Vengurlekar, S. S. Prabhu, S. K. Roy, and Jagdeep Shah

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Abstract

We study the picosecond time evolution of luminescence due to excitons and hot excitonic molecules (biexcitons) at 8 К in CdSe. We find that from an initial (<50 ps) temperature of 40 K, the biexcitons cool to 15 K in about 250 ps with an average energy loss rate (ELR) of a few 107 eV/s, mainly from acoustic-phonon emission. We also deduce the biexciton and exciton lifetimes to be 10 and 600 ps, respectively.

© 1995 Optical Society of America

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