Electrical modulation of the complex refractive index in mid-infrared quantum cascade lasers Teissier, J. ; Laurent, S. ; Manquest, C. ; Sirtori, C. ; Bousseksou, A. ; Coudevylle, J. R. ; Colombelli, R. ; Beaudoin, G. ; Sagnes, I. Abstract Publication: Optics Express Pub Date: January 2012 DOI: 10.1364/OE.20.001172 Bibcode: 2012OExpr..20.1172T