High power Yb-doped photonic bandgap fiber oscillator at 1178 nm

Fan, Xinyan; Chen, Meishin; Shirakawa, Akira; Ueda, Ken–ichi; Olausson, Christina B.; Lyngsø, Jens K.; Broeng, Jes

doi:10.1364/oe.20.014471

Cited by 29 publications

(18 citation statements)

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“…They are showing a promising solution for new wavelength sources which have never been possible by conventional step-index type active fibers [1][2][3][4][5][6][7][8]. In PBGFs, highindex inclusions arranged periodically in the cladding create photonic bandgap guidance in the low-index rare-earth doped signal core.…”

Section: Introductionmentioning

confidence: 99%

Single-frequency ytterbium doped photonic bandgap fiber amplifier at 1178 nm

et al. 2012

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Section: Introductionmentioning

confidence: 99%

Single-frequency ytterbium doped photonic bandgap fiber amplifier at 1178 nm

et al. 2012

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“…Specially designed solid photonic band gap fiber has been introduced to suppress ASE, relying on its spectral filtering property based on bulk optical configuration [21]- [24]. Besides, heating the Yb-doped fiber has been proved to be another feasible way because the absorption cross-section of Yb ions can be increased with rising temperature [25], especially in spectral range of 1070-1100 nm where ASE occurs most possibly.…”

Section: Introductionmentioning

confidence: 99%

Diode-Pumped 1178-nm High-Power Yb-Doped Fiber Laser Operating at 125 C

et al. 2016

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We demonstrate a high-power Yb-doped fiber laser operating at 1178 nm based on commercial silica double-cladding fiber and laser diode (LD) pumping regime at 976 nm. It is experimentally proved that heating the active fiber is an efficient way to suppress amplified spontaneous emission (ASE) and to increase the parasitic lasing threshold in long-wavelength Yb-doped fiber lasers. By adopting output coupling fiber Bragg grating (OC FBG) with high reflectivity and heating the Yb-doped fiber to 125 C, a record output power of 31 W is obtained, and the corresponding slope efficiency is $44% with respect to the pump power. To the best of our knowledge, it is the highest output power of Yb-doped fiber lasers, which adopt commercial double-cladding active fiber and operate in the range beyond 1160 nm. Furthermore, it is first experimentally proved that the parasitic lasing threshold is related to the power of the backward ASE and the length of the active fiber.Index Terms: Yb-doped fiber laser, long wavelength, high temperature.

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“…However, until now, the output power of Bismuth-doped fiber lasers is still low, which can be attributed to that the active fiber is not as mature as Yb or Er doped ones [24]. Besides, with Yb-doped solid-core photonic bandgap fibers, the output power of L-band lasers can reach 100 W-class [21], [22] based on bulk optics configuration. Apart from this, we also can achieve L-band fiber lasers by tandem pump.…”

Section: Introductionmentioning

confidence: 99%