Graphene analogue BCN: femtosecond nonlinear optical susceptibility and hot carrier dynamics

Abstract

Third-order nonlinear absorption and refraction coefficients of a few-layer boron carbon nitride (BCN) and reduced graphene oxide (RGO) suspensions have been measured at 3.2 eV in the femtosecond regime. Optical limiting behavior is exhibited by BCN as compared to saturable absorption in RGO. Nondegenerate time-resolved differential transmissions from BCN and RGO show different relaxation times. These differences in the optical nonlinearity and carrier dynamics are discussed in the light of semiconducting electronic band structure of BCN vis-à-vis the Dirac linear band structure of graphene.

18 pages, 5 figures

References in corpus (2)

• Graphene photodetectors for high-speed optical communications
• Large nonlinear absorption and refraction coefficients of carbon nanotubes estimated from femtosecond Z-scan measurements

Cited by in corpus (4)

• Modeling electronic, mechanical, optical and thermal properties of graphene-like BC${}_6$N materials: Role of prominent BN-bonds
• Ultrafast photoinduced enhancement of nonlinear optical response in 15-atom gold clusters on indium tin oxide conducting film
• Probing ultrafast carrier dynamics and nonlinear absorption and refraction in core-shell silicon nanowires
• Optical and Terahertz Response of Carbon Nanostructures