1. Quantum Electronics Division Department of Physics Lomonosov Moscow State University Moscow 119991 Russia
2. Advanced Organic Photonic Materials and Technology Laboratory School of Chemistry and Centre for Nanotechnology University of Hyderabad Prof. C. R. Rao Road, Gachibowli Hyderabad Telangana 500 046 India
3. Advanced Centre of Research in High Energy Materials University of Hyderabad Prof. C. R. Rao Road, Gachibowli Hyderabad Telangana 500 046 India
4. Landau Phystech School of Physics and Research Moscow Institute of Physics and Technology
5. School of Physics University of Hyderabad Prof. C. R. Rao Road, Gachibowli Hyderabad Telangana 500 046 India