Strong Purcell effect for quantum boxes in micropillars and microdisks

Summary form only given. In a founding paper, Purcell proposed to control the spontaneous emission (SE) rate of a dipole by using a cavity to tailor the dipole-field coupling. In spite of a major experimental effort motivated by the interest of this concept in optoelectronics, only minor SE rate enhancements could be observed in solid-state microcavities until recently. We report the fabrication of both GaAs-AlAs micropillars and GaAs microdisks displaying an improved optical quality by optimizing the reactive ion etching.