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We demonstrate a thulium-doped fiber ring laser (TDFRL) integrated with an amplifier, which has a watt-level single-frequency output at 2 $\mu\text{m}$ with a 120-nm wavelength tunability. The TDFRL is constructed based on a hybrid ring-linear resonator configuration. An unpumped TDF is incorporated as a self-constructed saturable absorption grating. A blazed grating aligned in a Littrow configuration...
We present a tunable single longitudinal mode Tm-doped fiber ring laser incorporating a self-constructed saturable absorption grating and a blazed grating with wavelength tunability of over 100 nm. The spectral and temporal characteristics of the laser output are described.
Longitudinal modes of a tunable Tm-doped fiber ring laser with/without an unpumped Tm-doped fiber as a saturable absorption grating are analyzed using an all-fiber scanning ring resonator. Temporal characteristics of the laser are also discussed.
We report on the phase coherent operation of the singly resonant CW OPO based on self-guided operation in a MgO:PPLN crystal pumped at 532 nm via the optical injection-locking from the external cavity diode laser.
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