Bound states of solitons in a harmonic graphene-mode-locked fiber laser

Abstract MXene are a class of metal carbide and metal nitride materials with a two-dimensional layered structure. MXene Ti3C2Tx has the characteristics of good metal conductivity and adjustable chemical composition, which has attracted the attention of scientists. Recently, Mxene have shown strong nonlinear photonics and optoelectronic effect, which can be used to generate ultrashort pulsed laser. However, soliton molecules pulse in laser cavity based on Mxene have not been reported at present. In this article, MXene have been characterized systematically, and the nonlinear optical characters were measured. In addition, we combined MXene with taper fiber to make a saturable absorber device for an erbium-doped fiber laser. The modulation depth and saturation absorption intensity of MXene are 10.3% and 197.5 MW/cm2, respectively. Thanks to the outstanding character of MXene, a three-order soliton molecules pulse were generated in laser cavity. The center wavelength, pulse interval and spectral modulation period of soliton molecules are 1529.4 nm, 15.5 ps and 0.5 nm, respectively. The above experimental results show that MXene have broad application prospects in the fields of optical fiber communication, laser material processing and high-resolution optics.

Section: Introductionmentioning

confidence: 99%

MXene: two dimensional inorganic compounds, for generation of bound state soliton pulses in nonlinear optical system

Feng

Guo

et al. 2020

“…GO can be reduced back to graphene by hydrazine [163]. As reduction is never complete, this material is known as reduced GO (RGO), to distinguish from pristine graphene, which can also be used to make SAs [77][78][79][80][81][82].…”

Section: Exfoliation Methodsmentioning

confidence: 99%

“…[67]. The method of optical deposition is also used to transfer graphene to the fiber in laser cavity [78][79][80][81]162]. For instance, Fu et al reported a graphene-mode-locked Er-doped fiber laser based on optical deposition, where a fiber connector for physical contact (FC/PC) was immersed in graphene solution.…”

Section: Graphenementioning

confidence: 99%

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Solution-processed two-dimensional materials for ultrafast fiber lasers (invited)

Sun

Wang

et al. 2020

Self Cite

AbstractSince graphene was first reported as a saturable absorber to achieve ultrafast pulses in fiber lasers, many other two-dimensional (2D) materials, such as topological insulators, transition metal dichalcogenides, black phosphorus, and MXenes, have been widely investigated in fiber lasers due to their broadband operation, ultrafast recovery time, and controllable modulation depth. Recently, solution-processing methods for the fabrication of 2D materials have attracted considerable interest due to their advantages of low cost, easy fabrication, and scalability. Here, we review the various solution-processed methods for the preparation of different 2D materials. Then, the applications and performance of solution-processing-based 2D materials in fiber lasers are discussed. Finally, a perspective of the solution-processed methods and 2D material-based saturable absorbers are presented.

“…On the other hand, the Ag nanoparticles possess the properties of the highest electrical and thermal conductivities among metal materials, as well as large and ultrafast third-order optical nonlinearities [34,35,41], indicating the high potential as SAs in pulsed fiber lasers. Moreover, compared to other materials used as SAs [51][52][53][54][55][56][57][58][59][60], Ag nanoparticles are easy to fabricate with no need of purification, and particle size can be controlled. However, despite a few works reported on Ag nanoparticles as SAs for Q-switched pulses generation at 1.5-and 2-μm bands [48][49][50], the investigation of Ag nanoparticles is still insufficient to date, with no experimental report of Q-switched operation at the 1-μm Yb-doped fiber laser (YDFL).…”

Section: Introductionmentioning

confidence: 99%

Passively Q-switched Yb-doped all-fiber laser based on Ag nanoplates as saturable absorber

Wang

et al. 2020

Self Cite

We report on a Q-switched Yb-doped all-fiber laser based on a solution-processed Ag nanoplates saturable absorber. Optical deposition procedure is implemented to transfer the Ag nanoplates onto the fiber core area through the thermal effect. The saturable absorber is sandwiched between two fiber connectors, providing simplicity, flexibility, and easy integration into the laser oscillator. The modulation depth and saturation incident fluence are measured to be ~5.8% and ~106.36 μJ/cm2 at 1-μm region, respectively. Self-started stable Q-switched operation is achieved for a threshold pump power of 180 mW. The repetition rates of the pulse trains range from 66.6 to 184.8 kHz when the pump power scales from 210 to 600 mW. The maximum average output power is 10.77 mW, corresponding to the single-pulse energy of 58.3 nJ and minimum pulse duration of ~1.01 μs. To the best of our knowledge, it is the first time that the Ag nanoplates saturable absorbers are utilized in the 1-μm Yb-doped Q-switched fiber laser.