Photosensitive Yb-Doped Germanophosphosilicate Artificial Rayleigh Fibers as a Base of Random Lasers
Andrey Rybaltovsky,
Sergei Popov,
Denis Lipatov,
Andrey Umnikov,
Alexey Abramov,
Oleg Morozov,
Dmitry Ryakhovskiy,
Viktor Voloshin,
Alexander Kolosovskii,
Igor Vorob’ev,
Oleg Butov,
Yuriy Chamorovskiy
Affiliations
Andrey Rybaltovsky
Kotelnikov Institute of Radioengineering and Electronics, Russian Academy of Sciences, St. Mokhovaya 11-7, 125009 Moscow, Russia
Sergei Popov
Kotelnikov Institute of Radioengineering and Electronics (Fryazino Branch), Russian Academy of Sciences, pl. Akad. Vvedenskogo 1, 141190 Fryazino, Russia
Denis Lipatov
G. G. Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences, St. Tropinina 49, 603951 Nizhny Novgorod, Russia
Andrey Umnikov
G. G. Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences, St. Tropinina 49, 603951 Nizhny Novgorod, Russia
Alexey Abramov
G. G. Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences, St. Tropinina 49, 603951 Nizhny Novgorod, Russia
Oleg Morozov
Department of Radiophotonics and Microwave Theory, Kazan National Research State University Named after A.N. Tupolev-KAI, 31/7 Karl Marx St., 420111 Kazan, Russia
Dmitry Ryakhovskiy
Kotelnikov Institute of Radioengineering and Electronics (Fryazino Branch), Russian Academy of Sciences, pl. Akad. Vvedenskogo 1, 141190 Fryazino, Russia
Viktor Voloshin
Kotelnikov Institute of Radioengineering and Electronics (Fryazino Branch), Russian Academy of Sciences, pl. Akad. Vvedenskogo 1, 141190 Fryazino, Russia
Alexander Kolosovskii
Kotelnikov Institute of Radioengineering and Electronics (Fryazino Branch), Russian Academy of Sciences, pl. Akad. Vvedenskogo 1, 141190 Fryazino, Russia
Igor Vorob’ev
Kotelnikov Institute of Radioengineering and Electronics (Fryazino Branch), Russian Academy of Sciences, pl. Akad. Vvedenskogo 1, 141190 Fryazino, Russia
Oleg Butov
Kotelnikov Institute of Radioengineering and Electronics, Russian Academy of Sciences, St. Mokhovaya 11-7, 125009 Moscow, Russia
Yuriy Chamorovskiy
Kotelnikov Institute of Radioengineering and Electronics (Fryazino Branch), Russian Academy of Sciences, pl. Akad. Vvedenskogo 1, 141190 Fryazino, Russia
Asingle-mode Yb-doped germanophosphosilicate fiber with ultra-low optical losses (less than 2 dB/km) was fabricated by means of the MCVD method utilizing an all-gas-phase deposition technique developed “in house”. The absorption and luminescent spectral properties of the fiber were thoroughly studied. The photosensitivity of the pristine (non-hydrogenated) fiber to 248 nm-laser radiation was confirmed by means of fiber Bragg grating (FBG) inscription directly during the drawing process. The random single-frequency lasing at the 1060-nm-wavelength obtained in the 21-m-long fiber with an array of weak FBG was reported. The developed laser slope efficiency in the backward-pumping scheme was measured as high as 32%.
