Author Affiliations

Amit Yadav,^1,5 Evgeny Zherebtsov,^2,5 Nikolay B. Chichkov,^1,5 Regina Gumenyuk,^3,5 Mikhail A. Melkumov,^4,5 Mikhail V. Yashkov,^3,5 Evgeny M. Dianov,^4,5 and Edik U. Rafailov^1,5

¹Aston Institute of Photonic Technologies, Aston University, B4 7ET, Birmingham, UK

²Optoelectronics and measurement techniques unit, University of Oulu, Oulu, 90014, Finland

³Laboratory of Photonics, Tampere University of Technology, Tampere, Finland

⁴Fiber Optics Research Center of the Russian Academy of Sciences, Moscow 119333, Russia

⁵Institute of Chemistry of High-Purity Substances of the Russian Academy of Sciences, Nizhny Novgorod 603600, Russia