All-fiber 2 μm mode-locked thulium-doped fiber laser with the graphene oxide film

An all-fiber passively mode-locked thulium-doped fiber laser (TDFL) that uses a graphene oxide (GO) film as a saturable absorber (SA) is reported. Stable pulses with a center wavelength of 1920.8 nm are generated at a repetition rate of 17.3 MHz. The pulse spectral width is 3.4 nm and the pulse dura...

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Bibliographic Details
Published inOptik (Stuttgart) Vol. 157; pp. 1292 - 1299
Main Authors Zhang, Rui, Li, Xing, Dai, Shenggan, Li, Junpeng, Cao, Liming, Wu, Duanduan, Dai, Shixun, Peng, Jian, Weng, Jian, Nie, Qiu hua
Format Journal Article
LanguageEnglish
Published Elsevier GmbH 01.03.2018
Subjects
Fiber lasers
Graphene-oxide
Mode-locking
Ultrashort pulse
Mode-locking
Ultrashort pulse
Graphene-oxide
Fiber lasers
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Summary:An all-fiber passively mode-locked thulium-doped fiber laser (TDFL) that uses a graphene oxide (GO) film as a saturable absorber (SA) is reported. Stable pulses with a center wavelength of 1920.8 nm are generated at a repetition rate of 17.3 MHz. The pulse spectral width is 3.4 nm and the pulse duration is about 1.14 ps. Production of stable and robust pulses indicates that the GO SA material is suitable for generation of 2 μm mode-locking pulses. Our GO-based TDFL can be used as a seed source for 2 μm high-power pulsed fiber amplifiers and thus represent a considerable step towards practical applications of these lasers, such as special materials processing, medical diagnosis and mid-infrared supercontinuum generation.
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2017.12.087