Stark effect induced microcavity polariton solitons

Abstract

This paper proposes a way of generating polariton solitons (PSs) in a semiconductor microcavity using Stark effect as the trigger mechanism. A Stark pulse performing as the writing beam is used to excite non-resonant fluctuations of polariton, which finally evolves into bright PSs. It is found that a branch of PS solutions versus pump parameters could be found through optimizing parameters of the Stark pulse, and polarization of the generated PS is dependent on the writing beam.

Dynamics of defect-induced dark solitons in an exciton-polariton condensate

“…In our work we modeled this effect introducing effective optical potential V (x, t) acting only on the polariton wave function, without additional excitation of the reservoir density. Perturbation of the polariton field caused by DSE is a possible method of dark or bright soliton generation [45]. The change in the spatial position of the laser spot responsible for the creation of the defect could be performed with a spatial light modulator (SLM) or a rapidly tilting mirror, which driven by a piezoelectric element or an electrically controlled screw.…”

AC Stark Effect on Vortex Spectra Generated by Circularly Polarized Pulses

“…In numerous textbooks, the Stark effect is discussed mostly for a static field or low-frequency pulse [2], [3]. But, if the frequency of a pulse becomes high, and under appropriate conditions, the eigenvalues of an atom will follow only the intensity envelope of the field instead of the instantaneous electric field, which will generate a quasistatic shift of the energy level, which is known as ac Stark effect (or dynamic Stark effect) [5]- [10]. In recent years, with the advent of ultrashort or few-cycle laser pulses, the ac Stark effect has demonstrated some novel features.…”