Wavelength-tunable noise-like fiber laser based on PbS quantum dot saturable absorber film

A wavelength-tunable noise-like pulse (NLP) erbium-doped fiber laser incorporating PbS quantum dot (QD) polystyrene (PS) composite film as a saturable absorber (SA) is experimentally demonstrated. The wavelength tuning is implemented via a Lyot filter consisting of a segment of polarization-maintain...

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Bibliographic Details
Published in:Applied optics (2004) 2022-06, Vol.61 (17), p.5172
Main Authors: Gao, Chenyu, Dai, Lilong, Huang, Qianqian, Li, Kai, Fan, Meiduan, Song, Qingguo, Yan, Zhijun, You, Fen, Sun, Xiaolan, Mou, Chengbo
Format: Article
Language:English
Subjects:
Absorbers
Doped fibers
Erbium
Fiber lasers
Gratings (spectra)
Laser applications
Polarization
Polystyrene resins
Quantum dots
Tunable lasers
Tuning
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Summary:A wavelength-tunable noise-like pulse (NLP) erbium-doped fiber laser incorporating PbS quantum dot (QD) polystyrene (PS) composite film as a saturable absorber (SA) is experimentally demonstrated. The wavelength tuning is implemented via a Lyot filter consisting of a segment of polarization-maintaining fiber (PMF) and a 45° tilted fiber grating. By adjusting the polarization state of the ring cavity, the laser can deliver NLP with a continuous wavelength-tunable range from 1550.21 to 1560.64 nm. During continuous wavelength tuning, the output power varies between a range of 30.88–48.8 mW. Worthwhile noting is that the output power of 48.8 mW is the reported highest output power for wavelength-tunable NLP operation in an erbium-doped fiber laser using composite film as a saturable absorber.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.461063