Forward-calculated analytical interferograms in pass-through photon-based biomedical transillumination [0.03%]
基于光子的生物医学透射成像中正向计算的干涉图分析方法研究
Paulino Vacas-Jacques,Marija Strojnik,Gonzalo Paez
Paulino Vacas-Jacques
Recently, we have introduced a transillumination technique for biomedical diagnosis. The technique, pass-through photon-based transillumination, relies on interferometric measurements to recover the information of interest. In this work, we...
Geometrical superresolved imaging using nonperiodic spatial masking [0.03%]
基于非周期孔径编码的几何超分辨率成像技术研究进展
Amikam Borkowski,Zeev Zalevsky,Bahram Javidi
Amikam Borkowski
The resolution of every imaging system is limited either by the F-number of its optics or by the geometry of its detection array. The geometrical limitation is caused by lack of spatial sampling points as well as by the shape of every sampl...
Rakesh Kumar Singh,P Senthilkumaran,Kehar Singh
Rakesh Kumar Singh
The tight focusing of vortex carrying beams is studied using the Debye-Wolf diffraction integral in the presence of primary astigmatism. The roles of topological charge, polarization distribution of the input beam, and handedness of the bea...
Nonuniform sampling, image recovery from sparse data and the discrete sampling theorem [0.03%]
非均匀采样、从稀疏数据恢复图像和离散采样定理
Leonid P Yaroslavsky,Gil Shabat,Benjamin G Salomon et al.
Leonid P Yaroslavsky et al.
In many applications, sampled data are collected in irregular fashion or are partly lost or unavailable. In these cases, it is necessary to convert irregularly sampled signals to regularly sampled ones or to restore missing data. We address...
Systematic study of the mirror effect in a poly-Si subwavelength periodic membrane [0.03%]
多晶硅亚波长周期膜镜像效应的系统研究
Tian Sang,Li Wang,Shiyin Ji et al.
Tian Sang et al.
By using the equivalent eigenvalue equation of a waveguide grating, the mirror effect (Deltalambda/lambda>15%) with very high reflectivity (R>99%) based on guided-mode resonance (GMR) effects in a poly-Si subwavelength periodic membrane is ...
Rebecca L Vincelette,Robert J Thomas,Benjamin A Rockwell et al.
Rebecca L Vincelette et al.
An ABCD beam-propagation method was used to build a first-order mathematical model of a thermal lens effect from a near-infrared laser beam in water and ocular media. The model was found to fit experimental z-scan data best when the thermo-...
Optical diffractometry [0.03%]
光学衍射计测法
M Taghi Tavassoly,Mohammad Amiri,Ahmad Darudi et al.
M Taghi Tavassoly et al.
Interference of light has numerous metrological applications because the optical path difference (OPD) can be varied at will between the interfering waves in the interferometers. We show how one can desirably change the optical path differe...
Shlomi Arnon,Debbie Kedar
Shlomi Arnon
The growing need for ocean observation systems has stimulated considerable interest within the research community in advancing the enabling technologies of underwater wireless communication and underwater sensor networks. Sensors and ad hoc...
Study on electromagnetic scattering from the time-varying lossy dielectric ocean and a moving conducting plate above it [0.03%]
时变损耗介质海洋及其上方运动导体板的电磁散射研究
R Wang,L-X Guo
R Wang
The problem of electromagnetic (EM) scattering between the time-varying lossy dielectric ocean and a moving target is always solved by using some numerical algorithm. However, the elements of the impedance matrix and the surface electric an...
Kurt Bernardo Wolf
Kurt Bernardo Wolf
When a continuous-signal field is sampled at a finite number N of equidistant sensor points, the N resulting data values can yield information on at most N oscillator mode components, whose coefficients should in turn restore the sampled si...