Observation of plasmonically induced transparency by the pump-probe technique
Center for Nonlinear Sciences, University of North Texas, 1155 Union Circle #311427, 76203, Denton, TX, USA
2 Department of Physics, University of North Texas, 1155 Union Circle #311427, 76203, Denton, TX, USA
3 IFFS, University of Engineering Science and Technology, Chengdu, China
Accepted: 8 January 2021
Published online: 21 May 2021
We have studied the pump-probe spectroscopy of graphene oxide quantum dots. In the presence of gold nanoparticles, strong modifications of pump-probe spectra have been observed. We develop a theoretical model to explain the observed features of the pump-probe spectra. The model takes into account self-consistently the interaction of exciton with surface plasmonic waves excited in the gold nanoparticles, and it provides a qualitative agreement with the observed pump-probe spectra. We have demonstrated that the using gold nanoparticles can increase sensitivity, and potentially to have a broader range of applications to both spectroscopy and microscopy.
© The Author(s), under exclusive licence to EDP Sciences, Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021