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Gamma-ray polarimetry is a new powerful tool to study the processes responsible for the emission from astrophysical sources and the environments in which this emission takes place. Few successful polarimetric measurements have however been performed thus far in the gamma-ray energy band due to the difficulties involved. POLAR is a dedicated polarimeter designed to perform high precision measurements...
It's the first time to comprehensively and theoretically analyze the effect of the phase fluctuation on the shape of Brillouin phase spectrum, and the first time to design a new experimental setup to fully cancel phase fluctuation induced measurement errors.
The fast multipole algorithm (FMA) has been thought of as one of top ten algorithms in science and engineering in the 20th century and its multilevel variant (MLFMA) was first proposed in electromagnetics. The memory usage and CPU time for solving a dense matrix equation iteratively are of O(N2) complexity, where N is the number of unknowns, and this cost usually prevents one from solving large-scale...
Intensity modulated probe is utilized in coherent BOTDA sensor to reduce chromatic dispersion effect instead of phase modulated probe. Reduction of ∼6-MHz decoding error in Brillouin gain spectrum is achieved along 40-km sensing distance.
An analytical model of XPM induced nonlinear polarization crosstalk is proposed and experimentally verified. Based on this model, various polarization crosstalk mitigation methods including coherent receiver DSP and transmission system design are reviewed.
Stability of materials is of great technical importance for materials to be applied technologically. In this paper, a novel material-amorphous composite films of titanium and vanadium oxides films, which may have a very promising industrial application, were obtained by reactive dc magnetron co-sputtering deposition. The dependence of thermal resistance and square resistance stability of the samples...
Development of modern materials, including nanoclusters, cluster assembled materials and metamaterials is among the actual challenges for the development of future nanotechnologies. Here we discuss the peculiarities of far-field and near-field light scattering by plasmonic nanoparticles, and possible applications of weakly dissipating materials. Over the last few years many peculiarities of light...
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