Results 31 to 40 of about 297,164 (259)
Sub-wavelength Coherent Imaging of a Pure-Phase Object with Thermal Light [PDF]
, 2006 We report, for the first time, the observation of sub-wavelength coherent image of a pure phase object with thermal light,which represents an accurate Fourier transform.
Bai, Yanfeng +6 more
core +2 more sources
Unusual Breathing Behavior of Optically Excited Barium Titanate Nanocrystals
Crystals, 2020 Coherent X-ray diffraction patterns were recorded by using an X-ray free-electron laser to illuminate barium titanate nanocrystals as a function of time delay after laser excitation.
Jiecheng Diao +10 more
doaj +1 more source
Nanoscale coherent imaging of photonic structures by PSTM [PDF]
, 2000 We present an alternative instrument to map local optical field distributions: a photon scanning tunneling microscope (PSTM). In a PSTM a near-field optical fiber probe is used to frustrate the evanescent field above an integrated optical device.
Balistreri, M.L.M. +4 more
core +2 more sources
Imaging Embryonic Stem Cell Dynamics Using Quantitative 3-D Digital Holographic Microscopy
IEEE Photonics Journal, 2011 Embryonic stem cells are very important for the development of cell-based therapeutic strategies. Since stem cell colonies are nonpigmented and relatively transparent, they do not produce appreciable variation to the amplitude of probe electromagnetic ...
A. Anand, V. K. Chhaniwal, B. Javidi
doaj +1 more source
Photon-Counting Security Tagging and Verification Using Optically Encoded QR Codes
IEEE Photonics Journal, 2014 We propose an optical security method for object authentication using photon-counting encryption implemented with phase encoded QR codes. By combining the full phase double-random-phase encryption with photon-counting imaging method and applying an ...
A. Markman, B. Javidi, M. Tehranipoor
doaj +1 more source
The Potential of EuPRAXIA@SPARC_LAB for Radiation Based Techniques
Condensed Matter, 2019 A proposal for building a Free Electron Laser, EuPRAXIA@SPARC_LAB, at the Laboratori Nazionali di Frascati, is at present under consideration. This FEL facility will provide a unique combination of a high brightness GeV-range electron beam generated in a
Antonella Balerna +34 more
doaj +1 more source
Coherent Diffraction Imaging of Single 95nm Nanowires
, 2008 Photonic or electronic confinement effects in nanostructures become significant when one of their dimension is in the 5-300 nm range. Improving their development requires the ability to study their structure - shape, strain field, interdiffusion maps ...
Joël Eymery +5 more
core +1 more source
Lateral and axial resolution criteria in incoherent and coherent optics and holography, near- and far-field regimes [PDF]
, 2019 This work presents an overview of the spatial resolution criteria in classical optics, digital optics and holography. Although the classical Abbe and Rayleigh resolution criteria have been thoroughly discussed in the literature, there are still several ...
Latychevskaia, Tatiana
core +1 more source
Information Limits of Optical Coherence Imaging Through Scattering Media
IEEE Photonics Journal, 2009 We develop an information-theoretic framework for the quantitative assessment of the maximum amount of information provided by optical coherence imaging through scattering media.
A. Bilenca +4 more
doaj +1 more source
Remote Sensing, 2023 Inverse synthetic aperture ladar (ISAL) can achieve high-resolution images for long-range moving targets, while its performance is affected by atmospheric turbulence.
Azezigul Abdukirim +6 more
doaj +1 more source