Terahertz Bloch oscillator with a modulated bias

Abstract

Electrons performing Bloch oscillations in an energy band of a dc-biased superlattice in the presence of weak dissipation can potentially generate THz fields at room temperature. The realization of such Bloch oscillator is a long-standing problem due to the instability of a homogeneous electric field in conditions of negative differential conductivity. We establish the theoretical feasibility of stable THz gain in a long superlattice device in which the bias is quasistatically modulated by microwave fields. The modulation waveforms must have at least two harmonics in their spectra.

5 pages

References in corpus (8)

• Semiconductor Superlattices: A model system for nonlinear transport
• Fluctuation Dominated Josephson Tunneling with a Scanning Tunneling Microscope
• Bloch gain in dc-ac-driven semiconductor superlattices in the absence of electric domains
• Suppressed absolute negative conductance and generation of high-frequency radiation in semiconductor superlattices
• Theory of parametric amplification in in superlattices
• Enhancement of Josephson phase diffusion by microwaves
• THz parametric gain in semiconductor superlattices in the absence of electric domains
• High-frequency absorption and gain in superlattices: Semiquasistatic approach

Cited by in corpus (17)

• Controlling and enhancing THz collective electron dynamics in superlattices by chaos-assisted miniband transport
• Model of the Influence of an External Magnetic Field on the Gain of Terahertz Radiation from Semiconductor Superlattices
• Effect of temperature on resonant electron transport through stochastic conduction channels in superlattices
• Josephson Flux Flow Oscillator: the Microscopic Tunneling Approach
• Controlling high-frequency collective electron dynamics via single-particle complexity
• Influence of the Constant Electric Field on the Mutual Rectification of the Electromagnetic Waves in Graphene Superlattice
• Potential and limits of superlattice multipliers coupled to different input power sources
• Synchronizing Bloch-oscillating free carriers in moiré flat bands
• Quasiperiodicity and suppression of multistability in nonlinear dynamical systems
• Theory of spatially inhomogneous Bloch oscillations in semiconductor superlattices
• Nonlinear dynamics and band transport in a superlattice driven by a plane wave
• Excitation of relaxation oscillations in a semiconductor superlattice by incident waves: efficient terahertz harmonics generation
• Semiconductor quantum well irradiated by a two-mode electromagnetic field as a terahertz emitter
• Spatially confined Bloch oscillations in semiconductor superlattices
• The momentum-resolved and time-resolved two-color optical coherence absorption spectrum in the scattering process
• Stability properties of periodically driven overdamped pendula and their implications to physics of semiconductor superlattices and Josephson junctions
• Rectification of THz-radiation in semiconductor superlattices in the absence of domains