26 August 2015 Terahertz spectroscopy of low-dimensional nanomaterials: nonlinear emission and ultrafast electrodynamics
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Abstract
Nonlinear and non-equilibrium properties of low-dimensional quantum materials are fundamental in nanoscale science yet transformative in nonlinear imaging/photonic technology today. These have been poorly addressed in many nano-materials despite of their well-established equilibrium optical and transport properties. The development of ultrafast terahertz (THz) sources and nonlinear spectroscopy tools facilitates understanding these issues and reveals a wide range of novel nonlinear and quantum phenomena that are not expected in bulk solids or atoms. In this paper, we discuss our recent discoveries in two model photonic and electronic nanostructures to solve two outstanding questions: (1) how to create nonlinear broadband terahertz emitters using deeply subwavelength nanoscale meta-atom resonators? (2) How to access one-dimensional (1D) dark excitons and their non-equilibrium correlated states in single-walled carbon nanotubes (SWMTs)?
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Liang Luo, Liang Luo, Jigang Wang, Jigang Wang, } "Terahertz spectroscopy of low-dimensional nanomaterials: nonlinear emission and ultrafast electrodynamics", Proc. SPIE 9584, Ultrafast Nonlinear Imaging and Spectroscopy III, 958410 (26 August 2015); doi: 10.1117/12.2187130; https://doi.org/10.1117/12.2187130
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