Sergei Firstov

O+E Band BDFA with Flattop 116 nm Gain Bandwidth Pumped with 250 mW at 1256 nm

Aleksandr Khegai, Alexander Kharakhordin, Konstantin Riumkin, 2021, 2021 Optical Fiber Communications Conference and Exhibition (OFC).

Bismuth-doped fiber amplifier for the spectral region between 1630 and 1730 nm

Michal Nikodem, Aleksandr Khegai, Grzegorz Gomółka, 2021, Optics + Optoelectronics.

NALM-based bismuth-doped fiber laser at 1.7  μm.

Aleksandr Khegai, Konstantin Riumkin, Mikhail Melkumov, 2018, Optics letters.

Photobleaching effect in bismuth-doped germanosilicate fibers.

Mikhail Melkumov, Sergei Firstov, Sergey Alyshev, 2015, Optics express.

Formation of laser-active centers in bismuth-doped high-germania silica fibers by thermal treatment.

Alexander Kharakhordin, Konstantin Riumkin, Mikhail Melkumov, 2018, Optics express.