Confined optical modes in monolithic II-VI pillar microcavities

Abstract

Monolithic II-VI pillar microcavities made of ZnSSe and MgS∕ZnCdSe supperlattices have been fabricated by molecular-beam epitaxy and focused-ion-beam etching. Discrete optical modes of the pillar microcavities are studied in photoluminescence measurements. The optical modes are identified by means of calculations based on an extended transfer matrix method. Achievable Purcell factors well above 10 can be estimated from the measured quality factors and calculated mode volumes.