Graphene oxide mode-locked femtosecond erbium-doped fiber lasers

Abstract

We demonstrated the femtosecond erbium-doped all-fiber lasers mode-locked with graphene oxide, which can be conveniently obtained from natural graphite by simple oxidation and ultra-sonication process. With proper dispersion management in an all-fiber ring cavity, the laser directly generated 200 fs pulses at a repetition rate of 22.9 MHz and the average output power was 5.8 mW. With the variation of net cavity dispersion, output pulses with pulse width of 0.2~3 ps were obtained at a repetition rate of 22.9~0.93 MHz. These results are comparable with those of graphene saturable absorbers and the superiority of easy fabrication and hydrophilic property of graphene oxide will facilitate its potential applications for ultrafast photonics.

Mode-locked and Q-switched fiber lasers with graphene oxide based saturable absorber

“…Further investigation shows graphene oxide has ultrafast recovery time and strong saturable absorption, which is comparable to that of graphene [15,16]. As the result, passive mode-locked and Q-switched fiber lasers based on GO saturable absorbers have been reported frequently these days [17][18][19][20][21][22][23][24]. Here, we report femtosecond mode-locked erbium-doped fiber lasers, which adopted ring cavity configuration and self-assembled graphene oxide saturable absorber mirror.…”

Characterization of Graphene Oxide Coatings onto Optical Fibers for Sensing Applications

“…3. The Raman spectra reveals two prominent features of the GO, namely a band located at 1350 cm -1 assigned to the structural imperfections created by the attachment of hydroxyl and epoxide groups on the carbon basal plane [11] and the G band at 1600 cm -1 related with the ordered sp 2 bonded carbon [18]. There is a weak band at 2900 cm -1 , designed D + G, which is a combination band that reflects the defects concentration [19].…”

“…In the optical communications field, Xu et al developed a femtosecond graphene-oxide mode-locked erbium-doped fiber laser, demonstrating an improved performance when compared with the graphene based saturable absorbers, with the advantage of easy fabrication [11]. This was one of the first works combining this two research topics.…”

Eye-diagram and Q factor evaluation of fiber ring laser in lightwave transmission

“…Erbium doped fiber laser (EDFL) in C + L band have attracted great interest owing to their wide application, such as spectroscopy, sensing and optical coherence tomography [1][2][3]. EDFL also can be used in third harmonic generation (THG) green light generation, if lasing power is large enough [4,5].…”