نتایج جستجو برای: polarization profile
تعداد نتایج: 285997 فیلتر نتایج به سال:
We report simultaneous control of the orbital angular momentum (OAM) and beam profile of vortex beams generated in two-mode polarization-maintaining optical fiber. Two higher-order eigenmodes of the fiber are combined to form optical vortices. Reduced coherence between the fiber modes decreases the mode purity. Varying the coherence of the fiber modes changes the average OAM while maintaining a...
Plasma spectral line broadening is an important tool for plasma diagnostic in both laboratory and astrophysical field. The neutral helium lines are used e.g., in industrial applications and to determine the properties of stellar atmospheres of hot stars. In local thermal equilibrium, the spectral line profile is related to the dipole autocorrelation function which is related to the two-particle...
The integrated profile of PSR B1641−45 can be decomposed into four Gaussian components. The sum of these Gaussian components can be made to replicate the total intensity, linear and circular polarization of the integrated profile, and the discontinuity in the swing of the position angle. Surprisingly, the single pulses from PSR B1641−45 can also be decomposed into these same Gaussian components...
We experimentally demonstrate optical trapping of Rb 87 atoms using a two-color evanescent field around an optical nanofiber. In our trapping geometry, a blue-detuned traveling wave whose polarization is nearly parallel to the polarization of a red-detuned standing wave produces significant vector light shifts that lead to broadening of the absorption profile of a near-resonant beam at the trap...
The collective response of electrons in an ultrathin foil target irradiated by an ultraintense (∼6 × 1020 W cm−2) laser pulse is investigated experimentally and via 3D particle-in-cell simulations. It is shown that if the target is sufficiently thin that the laser induces significant radiation pressure, but not thin enough to become relativistically transparent to the laser light, the resulting...
This paper presents a low profile dual polarized directional antenna composed of loop and dipole arrays mounted on a ground plane with each loops and dipoles being fed independently. Each loop antenna is paired with a reflector while each dipole antenna is paired with a director and a reflector. The proposed antenna is intended for an indoor base station (BS) with resonance frequency of 2.4 GHz...
Despite the extreme error-correction performance, amount of computation sequential decoding polarization-adjusted convolutional (PAC) codes is random. In codes, cutoff rate denotes region between rates whose average computational complexity finite and those which infinite. this paper, by benefiting from polarization guessing techniques, we prove that required in pre-transformed polar polarizes,...
Polarization for Au/Pb(Zr Ti )O /YBa Cu O ferroelectric capacitor has been studied and measured by pulse method. A sequence of pulses with amplitudes varying from 0 to 10 volts in 2 volt steps is applied and a conventional polarization curve is obtained by integrating the charge flow from the polarization switching induced by the voltage ramp. A value of 25?C/cm2 is measured for the satur...
Microstrip antennas are conformable to planar and nonplanar surfaces, simple and inexpensive to fabricate using modern printed-circuit technology. Circular polarization of low-profile microstrip patch with high bandwidth is achieved in this research through the use of a three-cross-arms branch-line coupler with sequential rotated arrays, another low-profile antenna of hollow cylinder is also pr...
Weconsidermultiple resonance scatteringwith complete frequency redistribution (CFR) in a semi-infinite conservative atmosphere (photon destruction probability εI = 0) with the sources at infinite depth. The polarization arising in resonance scattering is completely accounted for. The problemweconsider is the resonance-scattering counterpart of the ChandrasekharSobolev problem of Rayleigh scatte...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید