In:
Applied Optics, Optica Publishing Group, Vol. 59, No. 36 ( 2020-12-20), p. 11240-
Abstract:
Niobium carbide ( N b 2 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 N b 2 C saturable absorber (SA) is fabricated
by the magnetron sputtering deposition technique. The reverse saturable absorption (RSA) response of few-layer N b 2 C nanosheets is observed with I-scan
measurements. The square-wave pulses (SWPs) are generated by using the as-prepared microfiber-based few-layer N b 2 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 N b 2 C nanosheets plays a decisive role in
the formation of the SWP.
Type of Medium:
Online Resource
ISSN:
1559-128X
,
2155-3165
Language:
English
Publisher:
Optica Publishing Group
Publication Date:
2020
detail.hit.zdb_id:
207387-0