MoxTa(1-x)Se2 ultrafast fiber laser

Ternary transition metal chalcogenides (TTMCs) are emerging as a promising branch of two-dimensional (2D) materials due to their special layered structure as well as wide-range tunable bandgap properties, which permit the implementation of novel optoelectronic characteristics. The manifestation of nonlinear optical properties of MoxTa(1-x)Se2 nanosheets and their application in ultrafast erbium- doped fiber (EDF) laser is reported in this work. The Mo(x)Ta((1-x)S)e(2) nanosheets were fabricated by employing the liquid phase exfoliation technology. In addition, the saturable absorption property of MoxTa(1-x)Se2-based saturable absorber (SA) is illustrated by obtaining a large optical modulation depth of 32.01 (0.76)%. Furthermore, an operational ultrashort pulse fiber laser was demonstrated. The laser has the ability to emit ultrashort pulses of 377 (0.3) fs at 1532 nm while a maximum output power of 10.52 mW was delivered by the employed within the EDF cavity MoxTa(1-x)Se2-based SA. Our experimental results provide concrete pieces of evidence that the MoxTa(1-x)Se2 nanosheets exhibit third order optical nonlinearity and the significant potential in nonlinear optoelectronic devices.

Automated summary

TTMCs are promising in optoelectronic devices due to their special structure and tunable bandgap properties; MoxTa(1-x)Se2 nanosheets exhibit nonlinear optical properties and have the ability to fabricate saturable absorbers and achieve ultrashort pulse lasers; Experimental results demonstrate that MoxTa(1-x)Se2 nanosheets possess third order optical nonlinearity and significant potential in nonlinear optoelectronic devices.