Author Affiliations
Abstract
1 The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, Teda Applied Physics Institute and
School of Physics, Nankai University, Tianjin 300457, China
2 College of Science, Tianjin Polytechnic University, Tianjin 300387, China
3 The Key Laboratory of Functional Polymer Materials and Center for Nanoscale Science & Technology,
Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
Pump-probe differential reflection and transmission spectroscopy is a very effective tool to study the nonequili-brium carrier dynamics of graphene. The reported sign of differential reflection from graphene is not explicitly explained and not consistent. Here, we study the differential reflection and transmission signals of graphene on a dielectric substrate. The results reveal the sign of differential reflection changes with the incident direction of the probe beam with respect to the substrate. The obtained theory can be applied to predict the differential signals of other two-dimensional materials placed on various dielectric substrates.
Thin films Thin films other properties other properties Nonlinear optics Nonlinear optics materials materials Optical properties Optical properties Ultrafast nonlinear optics Ultrafast nonlinear optics Photonics Research
2015, 3(2): 020000A1
