1. Federal Research Center Institute of Applied Physics of the Russian Academy of Sciences (IAP RAS), 46 Ul'yanov Street, Nizhny Novgorod 603950, Russia
2. Institut National de la Recherche Scientifique–Énergie, Matériaux et Télécommunications (INRS-EMT), 1650, Boulevard Lionel Boulet, Varennes, J3X 1S2 Québec, Canada
3. The International Center for Zetta-Exawatt Science and Technology (IZEST), Ecole Polytechnique, Route de Saclay, F-91128 Palaiseau Cedex, France