Experimental evidence of spontaneous emission enhancement for quantum boxes in pillar microcavities

✍ Scribed by B. Gayral; J.-M. Gerard; B. Sermage; B. Legrand; V. Thierry-Mieg; E. Costard

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 59 KB
• Volume: 25
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1006/spmi.1998.0666

✦ Synopsis

We study, by time-resolved photoluminescence, the radiative lifetime of InAs quantum boxes (QBs) placed in the core of small volume and high finesse GaAs/AlAs pillar microresonators. The spontaneous emission rate of the QBs, which are on-resonance with a cavity mode, is found to be up to five time larger than for QBs which are off-resonance. We explain this effect by considering the modification of the vacuum electromagnetic field induced by the cavity.