High quality beaming and efficient free-space coupling in L3 photonic crystal active nanocavities Haddadi, S. ; Le-Gratiet, L. ; Sagnes, I. ; Raineri, F. ; Bazin, A. ; Bencheikh, K. ; Levenson, J. A. ; Yacomotti, A. M. Abstract Publication: Optics Express Pub Date: August 2012 DOI: 10.1364/OE.20.018876 Bibcode: 2012OExpr..2018876H