Highly-photosensitive Er/Yb-codoped fiber for single-frequency continuous-wave fiber lasers with a short cavity for telecom applications

Bazakutsa, A. P.; Rybaltovsky, A A; Belkin, M.E.; Lipatov, Denis S.; Лобанов, А. С.; Абрамов, А. Н.; Butov, Oleg V.

doi:10.1016/j.optmat.2023.113669

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2023

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“…In most cases, this length of an active fiber is not enough to absorb a significant fraction of the pump, and as a result, the efficiency of such lasers is quite low. Only recent work has made it possible to improve the efficiency of such lasers by using heavily doped fibers [21,22].…”

Section: Introductionmentioning

confidence: 99%

An Ytterbium-Doped Narrow-Bandwidth Randomly Distributed Feedback Laser Emitting at a Wavelength of 976 nm

Davydov,

Rybaltovsky,

Aleshkina

et al. 2023

Photonics

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All-fiber, polarization maintaining, narrow-bandwidth, Yb-doped fiber lasers with randomly distributed feedback operated near 976 nm were realized for the first time. It was shown that the laser operated in a single, longitudinal mode regime during intervals of a few seconds. At other times, the laser generated a few longitudinal modes, but its bandwidth was always below the resolution of the optical spectrum analyzer (0.02 nm). The linewidth of each single longitudinal mode of the laser was estimated to be below 20 kHz. The reasons for this observed laser behavior were discussed and methods for achieving stable, continuous wave operation in the single-longitudinal-mode regime were proposed.

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Section: Introductionmentioning

confidence: 99%