In frequently studied two-band models for solid-state high-harmonic generation, interband harmonics in principle can range from the minimum to maximum bandgap. However, it is known that a laser-intensity dependent cutoff exists may be well below bandgap unless laser intensity so high electrons explore entire Brillouin zone. We show this formed by destructive interference of emission starting at...

Traveling Wave Tube (TWT) amplifiers, used in communication and ECM applications for their high power output, are nonlinear devices. This leads to harmonic and intermodulation distortion in the output spectrum which compromises the device performance. In communication systems, intermodulation products (IMPs) lead to adjacent channel interference while in ECM applications, harmonic generation ad...

Using the axially-symmetric Gross-Pitaevskii equation we study the phase coherence in a repulsive Bose-Einstein condensate (BEC) trapped by a harmonic and an one-dimensional optical lattice potential to describe the experiment by Cataliotti et al. [Science 293, 843 (2001)]. The phase coherence is maintained after the BEC is set into oscillation by a small displacement of the magnetic trap along...

Abstract: Electromagnetic interference (EMI) has a negative effect upon the performance of circuit communication systems. The present study considers the case of EMI and it is shown that the harmonic noise increases with an increasing interference amplitude and frequency. When electromagnetic interference takes place with the input pins of 555 Timer using as an Monostable Multivibrator it can c...

Fourth-order interference patterns of biphotons generated by type-I spontaneous parametric downconversion are examined for beams with partial angular and spectral entanglement, both for degenerate and nondegenerate constituent photons. Two-beam configurations using a single beam-splitter interferometer and a Mach-Zehnder interferometer are explicitly studied, as are four-beam configurations usi...

The aim of this study was to remove the two principal noises which disturb the surface electromyography signal (Diaphragm). These signals are the electrocardiogram ECG artefact and the power line interference artefact. The algorithm proposed focuses on a new Lean Mean Square (LMS) Widrow adaptive structure. These structures require a reference signal that is correlated with the noise contaminat...

This study examines linguistic influences on musical pitch processing and provides evidence for a form of language-selective interference with absolute-pitch (AP) memory. We show that voiced solfege syllables whose fundamental frequencies and harmonic structures are digitally shifted to precisely map onto a mismatched musical note can selectively interfere with pitch identification by some but ...

We experimentally observe longer than long trajectory influence in high-order harmonic generation (HHG) by varying the peak intensity of driving laser field either through direct attenuation or chirping pulse. Using a theoretical Gaussian beam model to simulate spatial interference resulting from quantum path interference, we show that measured patterns cannot be solely explained well-establish...

− This paper analyses the influence of interference from non-ideal laboratory environment on the resistance-bridge operation. Interference can be either the result of thermal emf, electromagnetically induced voltage or harmonic distortion of the power supply voltage. Interference is manifested as the increased measurement dispersion or even as non-negligible change in the measured resistance. T...