[Opt. Soc. America Technical Digest. Summaries of papers presented at the Quantum Electronics and Laser Science Conference. Conference Edition - Baltimore, MD, USA (6-11 May 2001)] Technical Digest. Summaries of papers presented at the Quantum Electronics and Laser Science Conference. Postconference Technical Digest (IEEE Cat. No.01CH37172) - Ultrafast spin relaxation of excitons in a self-organized quantum-well material