Dissipative Soliton Resonance in a Wavelength-Tunable Thulium-Doped Fiber Laser With Net-Normal Dispersion

We demonstrate an all-fiber figure-eight mode-locked thulium-doped fiber laser with a wide tunable range in both pulsewidth and wavelength. A 45-m-long ultrahigh numerical aperture fiber is used to manage the cavity dispersion, and the net cavity dispersion is calculated to be 0.8585 ps 2 at 1900 nm...

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Bibliographic Details
Published in:IEEE photonics journal 2015-06, Vol.7 (3), p.1-7
Main Authors: Xu, Yi, Song, Yu-li, Du, Ge-guo, Yan, Pei-guang, Guo, Chun-yu, Zheng, Guo-liang, Ruan, Shuang-chen
Format: Article
Language:English
Subjects:
Cavity resonators
Fiber lasers
Laser mode locking
mode-locked lasers
Optical fiber amplifiers
Optical fiber dispersion
Optical fiber polarization
Pump lasers
tunable lasers and solitons
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Summary:We demonstrate an all-fiber figure-eight mode-locked thulium-doped fiber laser with a wide tunable range in both pulsewidth and wavelength. A 45-m-long ultrahigh numerical aperture fiber is used to manage the cavity dispersion, and the net cavity dispersion is calculated to be 0.8585 ps 2 at 1900 nm. With net-normal dispersion, the experimental laser, operating in a dissipative soliton resonance region, generates stable rectangular pulses. The pulsewidth varies from 480 ps to 6.19 ns with the increasing pump power, and its center wavelength has a 28.95-nm tunable range (from 1940.22 to 1969.17 nm) by properly adjusting the polarization controllers. The maximum of average output power and pulse energy is 60.73 mW and 19.51 nJ, respectively. The rectangular pulses have a clamped peak power of about 3.16 W. The wavelength-tunable fiber laser with high-energy output operating at 2 μm has great potential in various application fields.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2015.2424855