We report what is to our knowledge the first demonstration of a continuous-wave singly resonant optical parametric oscillator based on potassium titanyl phosphate. The pump source used is a single-frequency resonantly doubled Nd:YAG laser. By double passing the pump through the crystal, we achieved a minimum oscillation threshold of 1.4 W. With 3.2 W of incident pump power, a maximum 1.07 W of ...

We report on the influence of the channel doping on dc, high frequency, and noise performance of GaN metal–semiconductor field-effect transistors ~MESFETs! grown on sapphire substrates. The devices with the channel thicknesses from 50 to 70 nm and doping levels up to 1.5310 cm were investigated. An increase in the channel doping results in the improved dc characteristics, higher cutoff, and max...

The influence of switching frequency on the low-frequency oscillation in the voltage-controlled buck-boost converter is studied in this paper. Firstly, the mathematical model of this system is derived. And then, a glimpse at the influence of switching frequency on the low-frequency oscillation in this system by MATLAB/Simulink is given. The improved averaged model of the system is established, ...

We study dipole-mode and scissors-mode oscillations of a harmonically trapped dipolar supersolid, composed droplets arranged on one-dimensional (1D) or 2D lattice, to establish the robustness its crystalline structure under translation rotation, using beyond-mean-field model including Lee-Huang-Yang interaction. The atoms are polarized in $z$ direction with supersolid lying $x\text{\ensuremath{...

By using electron beam lithography, we fabricated pairs of gold nanoparticles with varying interparticle separation. Double-beam femtosecond transient absorption spectroscopy was used to determine the coherent lattice oscillation frequency as a function of the interparticle separation in the presence of the plasmon field excited by the monitoring probe light. We found that the fractional shift ...

In the present paper, photoconductive and dielectric dependence oscillation characteristics of a single photorefractive ring resonator have been studied for the case of non-degenerate two-wave mixing in photorefractive materials by employing the plane-wave approximation method. The influence of photoconductivity and dielectric constant of photorefractive materials on frequency of oscillation an...

In the braneworld scenario, gravity and neutrino oscillation can both be used to detect the presence of an extra dimension. We argue that neutrino oscillation is particularly suitable if the size of the extra dimension is small, in which case the signature for the extra dimension is the disappearance of active neutrino fluxes into the bulk, caused by the destructive interference from the Kaluza...

Pancontinental droughts in North America, or droughts that simultaneously affect a large percentage of the geographically and climatically distinct regions of the continent, present significant on-the-ground management challenges and, as such, are an important target for scientific research. The methodology of paleoclimate-model data comparisons is used herein to provide a more comprehensive un...

The damping sensitivity analysis of interconnected power system low frequency oscillation is studied. The function of sensitivity analysis is implemented in the Small Signal Stability Analysis Package (SSAP). The paper mainly analyzes the sensitivities of oscillation modes with respect to the parameters of power system stabilizer (PSS) in the excitation systems of generators for a physical larg...