Continuous third harmonic generation in a terahertz driven modulated nanowire

Abstract

We consider the possibility of observing continuous third-harmonic generation using a strongly driven, single-band one-dimensional metal. In the absence of scattering, the quantum efficiency of frequency tripling for such a system can be as high as 93%. Combining the Floquet quasienergy spectrum with the Keldysh Green's function technique, we derive a semiclassical master equation for a one-dimensional band of strongly and rapidly driven electrons in the presence of weak scattering by phonons. The power absorbed from the driving field is continuously dissipated by phonon modes, leading to a quasi-equilibrium in the electron distribution. We use the Kronig-Penney model with varying effective mass to establish the growth parameters of an InAs/ InP nanowire near optimal for third harmonic generation at terahertz frequency range. V C 2015 AIP Publishing LLC. [http://dx

Floquet-theoretical formulation and analysis of high-order harmonic generation in solids

“…First, the correlation effects [23,[52][53][54] and the order parameters [55] have been neglected in our model. Second, the energy dissipation to the phonon thermal bath [56]. has not been considered either, which might be relevant if the driving frequency is as low as 1THz∼ 1ps −1 .…”

“…56) implies that, when 4|z k | > 1, the HHC spectrum I α,2A H (k, N ) shows a plateau for |N | 4|z k | and rapidly decays for larger |N | as understood as follows. Since we are considering |F | 1 and v n (k) ∝ J n (F ) rapidly decays as |n| increases, the sum over Mis dominated by M = N + M and Eq.…”

Plasmon effects in photoemission

“…Its space-dependence results from the interaction of the laser field with electrons in solids. Such conditions are met for example in semiconductor nanostructures [1][2][3] (like quantum wires or wells), photoemission from a metal tip [4,5], carbon nanotubes or graphene [6][7][8] or in surface physics [9][10][11][12][13][14][15]. To make our presentation as clear as possible we shall restrict ourselves to the one-space-dimensional case, although extension of the presented method to systems of higher dimensionality is possible (see, e.g.…”

The non-linear terahertz response of hot electrons in low-dimensional semiconductor superlattices: Suppression of the polar-optical phonon scattering

“…We would also mention the synthesis of extended graphdiyne wires that could allow one to investigate the non-linear electronic transport related to Bloch oscillations 45,46 , the proposal to realize the spin-dependent terahertz oscillator based on hybrid graphene superlattices 47 , the possibility of enhancing of spin injection in a spin-filter superlattice 48 , , theoretical investigation of the transport properties of superlattice nanowires for thermoelectric applications 48 , and proposal for the third harmonic generation in a terahertz driven modulated nanovires 50,51 .…”