High-Q whispering gallery modes in pillar microcavities Y.-R. Nowicki-Bringuier, J. Claudon, C. Böckler, S. Reitzenstein, M. Kamp, A. Forchel and J. M. Gérard Ann. Phys. Fr., 32 2-3 (2007) 123-126 Published online: 23 May 2008 DOI: 10.1051/anphys:2008023