Abstract

Niobium carbide (${{\rm Nb}_2}{\rm C}$), a novel two-dimensional MXene material, has attracted much attention due to its outstanding electronic and optical properties. In this work, a microfiber-based few-layer ${{\rm Nb}_2}{\rm C}$ saturable absorber (SA) is fabricated by the magnetron sputtering deposition technique. The reverse saturable absorption (RSA) response of few-layer ${{\rm Nb}_2}{\rm C}$ nanosheets is observed with I-scan measurements. The square-wave pulses (SWPs) are generated by using the as-prepared microfiber-based few-layer ${{\rm Nb}_2}{\rm C}$ SA in an erbium-doped fiber laser. The SWP width increases from 0.33 to 2.061 ns with the single pulse energy increases linearly up to 0.89 nJ while the amplitude remains as a constant. In addition, nonlinear polarization rotation mode-locking fiber lasers with different cavity lengths are constructed to explore the formation conditions of SWP. Our results indicate that the RSA effect of the few-layer ${{\rm Nb}_2}{\rm C}$ nanosheets plays a decisive role in the formation of the SWP.

© 2020 Optical Society of America

Few-layered W₂C nanosheets based on passively mode-locked fiber lasers

Guoru Li, Feifei Wang, Junting Liu, Hongkun Nie, Ruihua Wang, Kejian Yang, Baitao Zhang, and Jingliang He
Opt. Mater. Express 11(2) 299-309 (2021)

Few-layer Ta₂CT_x nanosheets-based mode-locked fiber lasers

Guoru Li, Qing Xu, Hongkun Nie, Chong Wang, Ruihua Wang, Kejian Yang, Jingliang He, and Baitao Zhang
Opt. Mater. Express 12(4) 1731-1740 (2022)

Few-layer GaSe nanosheet-based broadband saturable absorber for passively Q-switched solid-state bulk lasers

Bingnan Shi, Guanbai He, Kejian Yang, Baitao Zhang, and Jingliang He
Appl. Opt. 59(28) 8834-8838 (2020)

Soliton mode-locked pulse generation with a bulk structured MXene Ti₃AlC₂ deposited onto a D-shaped fiber

A. A. A. Jafry, A. H. A. Rosol, N. Kasim, A. R. Muhammad, R. Rulaningtyas, M. Yasin, and S. W. Harun
Appl. Opt. 59(28) 8759-8767 (2020)

Passively mode-locked fiber laser based on GeTe as a saturable absorber

Qiuyan Sheng, Shouqian Tang, Faming Ye, Yanjuan Wang, Si Chen, Caixun Bai, Cheng Lu, Huanian Zhang, Shenggui Fu, Guomei Wang, and Wenfei Zhang
Appl. Opt. 61(32) 9379-9385 (2022)