Results 41 to 50 of about 51,169 (250)
Digital Holographic Printing Methods for 3D Visualization of Cultural Heritage Artifacts
Digital Presentation and Preservation of Cultural and Scientific Heritage, 2014 Holography enables capture and reconstruction of the optical field scattered from three-dimensional (3D) objects. The hologram encodes both amplitude and phase of the field under coherent illumination, whereas photography records only the amplitude by ...
Hoonjong Kang +9 more
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Exploring shot noise and Laser Doppler imagery with heterodyne holography [PDF]
, 2012 Heterodyne Holography is a variant of Digital Holography, where the optical frequencies of signal and reference arms can be freely adjusted by acousto-optic modulators. Heterodyne Holography is an extremely versatile and reliable holographic technique, which is able the reach the shot noise limit in sensitivity at very low levels of signal.
arxiv +1 more source
Deep DIH : Statistically Inferred Reconstruction of Digital In-Line Holography by Deep Learning [PDF]
, 2020 Digital in-line holography is commonly used to reconstruct 3D images from 2D holograms for microscopic objects. One of the technical challenges that arise in the signal processing stage is removing the twin image that is caused by the phase-conjugate wavefront from the recorded holograms.
arxiv +1 more source
Digital holography with ultimate sensitivity [PDF]
Optics Letters 32, 8 (2007) 909, 2008 We propose a variant of the heterodyne holography scheme that combines the properties of off-axis and phase-shifting holography. This scheme makes it possible to filter off numerically the zero-order image alias and the technical noise of the reference.
arxiv +1 more source
Results in Optics, 2021 At present, there are few researches about telescopic digital holography (TDH) on the combination of digital holography and telescope technology. Because this technology generally cause low phase shift accuracy and large image reconstruction distance ...
YuCheng Li +4 more
doaj
IEEE Access, 2019 The presence of the auto correlation and twin cross correlation noises restrict the available spatial bandwidth of the holographic microscopy to much less than the available bandwidth of the digital sensor.
Behnam Tayebi +2 more
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PhotonicsIncoherent digital holography is a promising solution for acquiring three-dimensional information in the form of interference without a laser. Self-interference is the principal phenomenon of incoherent holography which splits the incident light wave ...
Youngrok Kim +3 more
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Photonics, 2023 During polarization holographic recording in azopolymer thin films, usually together with the volume anisotropic grating, a surface relief grating (SRG) is also formed.
Georgi Mateev +8 more
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Experimental Investigation of Mode Diversity Reception Using an Optical Turbulence Generator and Digital Holography [PDF]
arXiv, 2022 Mode diversity reception is experimentally investigated using an optical turbulence generator, off-axis digital holography, and digital demultiplexing. The results confirm improved fibre coupling efficiency when receiving the optical field using a multi-mode fibre instead of a single-mode fibre under turbulent conditions, specifically beam wander.
arxiv
Advanced Materials Interfaces, EarlyView.Surface topographical deformation is enhanced in liquid crystal polymer/oligomer network coatings by integrating nonreactive liquid crystal 5CB as a plasticizer, which facilitates the creation of dynamic polymer‐based solid optical devices. Abstract Surfaces with dynamic topographies play a pivotal role in modern technology by providing adaptable ...
Yuxin You +6 more
wiley +1 more source