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Fully-structured light — light with non-uniform intensity, phase and polarisation — lies at the heart of an emerging and extremely promising field of research, with applications in high-resolution imaging, optical trapping and manipulation of nanoparticles, plasmonic lithography, and optical communication. We show that the interplay of polarisation structure and nonlinearity can be used as a means...
From the perspective of diversity, spectrum utilization, and the hybrid processing in time domain and in frequency domain, this paper takes a general look and new perspectives on time-modulated antenna array. Some novel ideas, such as the synthesis of 4-D beampattern through 4-D source and the combination of retrodirective technique and the optimization of time-modulated frequency offset, are presented...
A novel technique which combines the ultra-wide band characteristic basis function method (UCBFM) and the adaptive multi-point expansion algorithm for asymptotic waveform evaluation (AWE) method is proposed. The UCBFM and the AWE method are two kinds of model order reduction (MOR) methods, and their proposed combination can be applied for fast evaluation of wide band scattering problems. In the proposed...
An efficient technique which combines the ultra-wide band characteristic basis function method (UCBFM) and the improved adaptive model-based parameter estimation (IA-MBPE) is introduced for analyzing the wide band electromagnetic scattering problems. The ultra-wide band characteristic basis functions (UCBFs) are generated from characteristic basis functions at the highest frequency in the range of...
We derive an analytical form of the Schmidt modes of spontaneous parametric down-conversion (SPDC) biphotons in both Cartesian and polar coordinates. We show that these correspond to Hermite-Gauss (HG) or Laguerre-Gauss (LG) modes only for a specific value of their width, and we show how such value depends on the experimental parameters. The Schmidt modes that we explicitly derive allow one to set...
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