Author Affiliations +
Svetlana S. Aleshkina,1 Denis S. Lipatov,2 Mikhail Yu. Salgankii,2 Anton V. Tausenev,3 Denis V. Shepelev,3 Mikhail M. Bubnov,1 Alexey N. Guryanov,2 Mikhail E. Likhachev1
1Fiber Optics Research Ctr. (Russian Federation)
2Institute of High Purity Substances (Russian Federation)
3Avesta Project Ltd. (Russian Federation)