This paper presents an overview of active array antennas, system-level nonlinear effects in such antennas, and their modeling and simulation techniques. Influence of nonlinear distortions and interference in active antennas on the overall system performance is considered. Modeling and simulation techniques, which can be applied to active array antennas, are substantially different from those us...

An ab initio calculation of the photoabsorption spectrum of ground state LiF below the ionic Li 1 F threshold predicts a periodic modulation of the predissociation line shapes. Specifically, we predict a periodic reversal of Fano’s line shape asymmetry parameter q. In this case, reversal of the q parameter occurs because of the interference of vibrational wave functions propagating alternativel...

We show that engineering the cavity aspect ratio of AlGaAs micropillar resonator allows for two orders magnitude increase in efficiency second harmonic generation at telecom wavelengths.

The diffusion of nonlinear loads and power electronic devices in systems deteriorates the signal environment, increases difficulty measuring harmonic phasors. Considering accurate phasor information is necessary to deal with related issues, this paper focuses on realizing dynamic estimation when contaminated by certain interharmonic tones, i.e. out-of-band interference (OBI). Specifically, work...

Harmonic oscillators count among the most fundamental quantum systems with important applications in molecular physics, nanoparticle trapping, and information processing. Their equidistant energy level spacing is often a desired feature, but at same time challenge if goal to deterministically populate specific eigenstates. Here, we show how interference transition amplitudes bichromatic laser f...