For the next generation of MeV range gamma-ray telescopes, position sensitive calorimeters based on a monolithic scintillator coupled to pixelated photodetector could be an important building block. In this paper, we present optimization reconstruction algorithms using machine learning, for detector 51×51×10mm3 CeBr3 crystal. that purpose, used automated test bench and collimated radioactive so...

Abstract 4D scanning transmission electron microscope (STEM) techniques have been increasingly featured among the microscopy characterization approaches, as they provide a perspective of improved information retrieval from samples overall. To make STEM experiments viable conventional image acquisition, recording diffraction patterns with pixelated detector at fast frame rates, sufficient sensit...

Digital Signal Processing Methods for Pixelated 3-D Position Sensitive Room-Temperature Semiconductor Detectors by Yuefeng Zhu

Scanning nano-beam electron diffraction with a pixelated detector was employed to investigate the orientation relationship of nanometer sized, irradiation induced G-phase (M6Ni16Si7) precipitates in an austenite matrix. Using this detector, faint spots originating from small particles could be resolved simultaneously as intense matrix reflections. The patterns were analyzed using two-stage temp...

The edge surfaces of single crystal CdTe play an important role in the electronic properties and performance of this material as an X-ray and γ-ray radiation detector. Edge effects have previously been reported to reduce the spectroscopic performance of the edge pixels in pixelated CdTe radiation detectors without guard bands. A novel Technology Computer Aided Design (TCAD) model based on exper...

In this paper we generalize the concept of $q$-plate, allowing arbitrary functions both radial and azimuthal variables, study their effect on uniformly polarized beams in near far-field regime. This gives a tool for achieving with hybrid states polarization (SoPs), alternative phase intensity distributions. We also implement an experimental device based liquid crystal silicon (LCoS) display emu...

We present a design for an omnidirectional transformation-optics (TO) cloak comprising thin lenses and glenses (generalized thin lenses) [J. Opt. Soc. Am. A33, 962 (2016)1084-7529JOAOD610.1364/JOSAA.33.000962]. It should be possible to realize such devices in pixelated form. Our design is a piecewise nonaffine generalization of piecewise affine pixelated-TO devices [Proc. SPIE9193, 91931E (2014...

Abstract In this work we demonstrate customized depolarization spatial patterns by imaging a dynamical time-dependent pixelated retarder. A proof-of-concept of the proposed method is presented, where liquid–crystal light modulator used as retarder that emulates controlled spatially variant depolarizing sample addressing phase pattern. We apply an Mueller polarimetric system based on polarizatio...