1. CNRS Laboratory for Photonics and Nanostructures, Route de Nozay, 91460 Marcoussis, France
2. Tyndall National Institute, Lee Maltings, Dyke Parade, Cork, Ireland
3. Centre for Advanced Photonics and Process Analysis, Cork Institute of Technology, Cork, Ireland
4. III-V Lab, a Joint Lab of “Alcatel Lucent Bell Labs,” “Thales Research and Technology,” and “CEA Leti,” Route de Nozay, 91460 Marcoussis, France
5. National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia