1. Prokhorov General Physics Institute of RAS, 119991 Moscow, Russia
2. Institute of Photonics, University of Eastern Finland, 80101 Joensuu, Finland
3. St. Petersburg State University, 199034 St. Petersburg, Russia
4. Department of Physics and Engineering, ITMO University, 197101 St. Petersburg, Russia
5. Rzhanov Institute of Semiconductor Physics, 630090 Novosibirsk, Russia