학술논문
High-Efficiency 2.09 μm Single-Oscillator Monolithic Thulium-Doped Fiber Laser
Document Type
Periodical
Author
Source
IEEE Photonics Technology Letters IEEE Photon. Technol. Lett. Photonics Technology Letters, IEEE. 35(10):553-556 May, 2023
Subject
Language
ISSN
1041-1135
1941-0174
1941-0174
Abstract
A single-oscillator monolithic thulium-doped fiber laser in which the 793 nm core absorption of 8.42 dB/m allows emitting 193 W (46 % of slope efficiency) at $2.09~\mu \text{m}$ is presented. An 8°-cleaved angle of the fiber facet suppresses the parasitic cavity that formerly limited the power scaling. The characteristics of the thulium laser operating at the uncommon 2.09- $\mu \text{m}$ long wavelength is compared to the power performances of a similar thulium-holmium codoped fiber laser.