Results 11 to 20 of about 159,755 (262)
Multiplexed vortex beam-based optical tweezers generated with spiral phase mask [PDF]
iScience, 2023 Summary: The design and implementation of a multiplexed spiral phase mask in an experimental optical tweezers setup are presented. This diffractive optical element allows the generation of multiple concentric vortex beams with independent topological ...
Francisco M. Muñoz-Pérez +5 more
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Experimental Analysis of Bragg Reflection Peak Splitting in Gratings Fabricated Using a Multiple Order Phase Mask [PDF]
Sensors, 2019 We performed an experimental analysis of the effect of phase mask alignment on the Bragg grating reflection spectra around the wavelength of λB = 1560 nm fabricated in polymer optical fiber by using a multiple order phase mask.
Gabriela Statkiewicz-Barabach +3 more
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On the optimization of the geometric pattern for structured illumination based X-ray phase contrast and dark-field imaging: a simulation study and its experimental validation [PDF]
Journal of Synchrotron RadiationPhase contrast and dark-field imaging are relatively new X-ray imaging modalities that provide additional information to conventional attenuation-based imaging.
Clara Magnin +5 more
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Extended Depth-of-Field of a Miniature Optical Endoscope Using Wavefront Coding
Applied Sciences, 2020 Endoscopic imaging is an indispensable tool for visual inspection of surfaces in hard-to-access places. The conventional optical endoscope only enables imaging the regions that lie close to the focal plane, and therefore improving the depth of field (DOF)
Lei Yang +6 more
doaj +1 more source
Fourier phasing with phase-uncertain mask [PDF]
Inverse Problems, 2013 Fourier phasing is the problem of retrieving Fourier phase information from Fourier intensity data. The standard Fourier phase retrieval (without a mask) is known to have many solutions which cause the standard phasing algorithms to stagnate and produce wrong or inaccurate solutions.
Fannjiang, Albert, Liao, Wenjing
openaire +2 more sources
Fresnel Lens Array-Based Phase Mask Location Method for Adjustable Multi-Pass Cavity
Photonics, 2023 The modulation accuracy of Multi-Plane Light Conversion (MPLC) mainly depends on the positioning accuracy of the phase mask on the Spatial Light Modulator (SLM).
Ximing Wang +5 more
doaj +1 more source
St. Petersburg Polytechnical University Journal: Physics and Mathematics, 2020 In the paper, the influence of phase distribution over the objects’ space on resolution and depth of field of computer-generated holograms has been investigated.
Koreshev Sergey +3 more
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IET Image Processing, 2021 A novel asymmetric double image encryption technique is introduced to protect the algorithm from the interlopers by using hybrid chaotic structured phase masks in Arnold and Fresnel transforms.
Shivani Yadav, Hukum Singh
doaj +1 more source
Scientific Reports, 2023 Beam tracking X-ray Phase Contrast Imaging is a “Shack-Hartmann” type approach which uses a pre-sample mask to split the x-rays into “beamlets” which are interrogated by a detector with sufficient resolution. The ultimate spatial resolution is determined
G. Lioliou +7 more
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STUDY OF SIGNIFICANCE OF PHASE MASK IMAGE IN ACUTE STROKE PATIENTS
Malang Neurology Journal, 2021 Background: Phase images contains information regarding local susceptibility changes between the tissues, which can help measure the iron and other content which changes the local field.
Krishna Teja Nerella +2 more
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