Strong nonlinear terahertz response induced by Dirac surface states in Bi2Se3 Topological Insulator

Abstract

Electrons with a linear energy/momentum dispersion are called massless Dirac electrons and represent the low-energy excitations in exotic materials like Graphene and Topological Insulators (TIs). Dirac electrons are characterized by notable properties like a high mobility, a tunable density and, in TIs, a protection against backscattering through the spin-momentum looking mechanism. All those properties make Graphene and TIs appealling for plasmonics applications. However, Dirac electrons are expected to present also a strong nonlinear optical behavior. This should mirror in phenomena like electromagnetic induced transparency (EIT) and harmonic generation. Here, we demonstrate that in Bi2Se3 Topological Insulator, an EIT is achieved under the application of a strong terahertz (THz) electric field. This effect, concomitant determined by harmonic generation and charge-mobility reduction, is exclusively related to the presence of Dirac electron at the surface of Bi2Se_3, and opens the road towards tunable THz nonlinear optical devices based on Topological Insulator materials.

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• Topological Insulators
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Cited by in corpus (41)

• Gate tunable third-order nonlinear optical response of massless Dirac fermions in graphene
• Hot carriers in graphene -- fundamentals and applications
• Efficient Terahertz Harmonic Generation with Coherent Acceleration of Electrons in the Dirac Semimetal Cd3As2
• Grating-graphene metamaterial as a platform for terahertz nonlinear photonics
• Non-perturbative high-harmonic generation in the three-dimensional Dirac semimetal Cd${}_3$As${}_2$
• Ultrafast Terahertz Conductivity Probes of Topologically Enhanced Surface Transport Driven by Mid-Infrared Laser Pulses in Bi${}_2$Se${}_3$
• Doping Induced Second Harmonic Generation in Centrosymmetric Graphene from Quadrupole Response
• Relativistic electron beam acceleration in a zero-slippage terahertz-driven Inverse Free Electron Laser scheme
• Large optical nonlinearity enhancement under electronic strong coupling
• Post-2000 Nonlinear Optical Materials and Measurements: Data Tables and Best Practices
• Roadmap for Photonics with 2D Materials
• Milliwatt terahertz harmonic generation from topological insulator metamaterials
• Tunable room temperature nonlinear Hall effect from the surfaces of elementary bismuth thin films
• Longitudinal phase-space manipulation with beam-driven plasma wakefields
• Terahertz signatures of ultrafast Dirac fermion relaxation at the surface of topological insulators at room temperature
• Terahertz tuning of Dirac plasmons in Bi${}_2$Se${}_3$ Topological Insulator
• Efficient generation of extreme terahertz harmonics in 3D Dirac semimetals
• Efficient high-harmonic generation in graphene with two-color laser field at orthogonal polarization
• Nonperturbative Topological Current in Weyl and Dirac Semimetals in Laser Fields
• Surface Phonons in the Topological Insulators Bi2Se3 and Bi2Te3
• Robust Topological Terahertz Circuits using Semiconductors
• Third-order optical conductivity of an electron fluid
• Engineering THz-frequency light generation, detection and manipulation through graphene
• Abnormal Surface Nonlinear Optical Responses in Topological Materials
• Observation of terahertz second harmonic generation from Dirac surface states in the topological insulator Bi${}_2$Se${}_3$
• Lateral plasmonic crystals: Tunability, dark modes, and weak-to-strong coupling transition
• Multiphoton excitation and high-harmonics generation in topological insulator
• Growth of Ultrathin Bi${}_2$Se${}_3$ Films by Molecular Beam Epitaxy
• A cascading nonlinear magneto-optical effect in topological insulators
• Strain-enhanced optical absorbance of topological insulator films
• Beyond the effective mass approximation: predictive theory of the nonlinear optical response of conduction electrons
• Influence of chirp and carrier-envelope phase on non-integer high-harmonic generation
• Magneto-optical properties of topological insulator thin films with broken inversion symmetry
• THz Photodetector using sideband-modulated transport through surface states of a 3D Topological Insulator
• Relaxation dynamics of the optically driven nonequilibrium states in the electron- and hole-doped topological-insulator materials $(B{i}_{1-x}S{b}_x{)}_{2}T{e}_3$
• Many-body effects on high-harmonic generation in Hubbard ladders
• Efficient Control of High Harmonic Generation in Carbon Nanotubes using the Aharonov-Bohm Effect
• Recent results at SPARC_LAB
• Ultrafast Spectroscopy of Bi2Se3 Topological Insulator
• Highly efficient broadband THz upconversion with Dirac materials
• Carbon nanotubes for polarization sensitive terahertz plasmonic interferometry