Results 51 to 60 of about 16,467 (243)

Holographic Beam Measurements of the Canadian Hydrogen Intensity Mapping Experiment (CHIME)

The Astrophysical Journal
We present the first results of the holographic beam-mapping program for the Canadian Hydrogen Intensity Mapping Experiment (CHIME). We describe the implementation of a holographic technique as adapted for CHIME, and introduce the processing pipeline ...
Mandana Amiri, Arnab Chakraborty, Simon Foreman, Mark Halpern, Alex S Hill, Gary Hinshaw, T. L. Landecker, Joshua MacEachern, Kiyoshi W. Masui, Juan Mena-Parra, Nikola Milutinovic, Laura Newburgh, Anna Ordog, Ue-Li Pen, Tristan Pinsonneault-Marotte, Alex Reda, Seth R. Siegel, Saurabh Singh, Haochen Wang, Dallas Wulf, The CHIME Collaboration   +20 more
doaj   +1 more source

Mechanical behavior study of laminate composite by three-color digital holography

Journal of the European Optical Society-Rapid Publications, 2017
A method for real time 3D measurements based on three-color digital holographic interferometry is presented and applied to the investigation of fracture mechanisms in laminate composite submitted to a three point flexural loading. A convolution algorithm
M Karray, C Poilane, M Gargouri, P Picart   +3 more
doaj   +1 more source

3D imaging using scanning diffractometry

Scientific Reports, 2021
Imaging of cells is a challenging problem as they do not appreciably change the intensity of the illuminating light. Interferometry-based methods to do this task suffer from high sensitivity to environmental vibrations.
Morteza J. Siavashani, Iman Naghedi, Vahid Abbasian, Ehsan A. Akhlaghi, Mohammad A. Charsooghi, Mohammad Taghi Tavassoly, Ali-Reza Moradi   +6 more
doaj   +1 more source

Techniques and Advances in Ultrafast Photography

Advanced Photonics Research, Volume 6, Issue 12, December 2025.
This review maps the fast‐growing field of ultrafast photography from early mechanical cameras to modern optical‐computational methods. It organizes techniques into four families (multishot passive/active; single‐shot passive/active), explains how they reach trillion‐frame‐per‐second speeds, compares capabilities and tradeoffs, and highlights ...
Chen Huang, Xin Zhang, Renjie Han, Jiaoyu Fan, Hui Jiang, Yiwen Zhang, Jinghua Yu, Jiamin Wang, Yi Chen, Junjie Sun, Fei Chen   +10 more
wiley   +1 more source

Special Issue on Digital Holographic 3D Imaging: Capture, Display, and Evaluation

ETRI Journal, 2019
Holography has been fascinating people for almost 70 years (since Gabor's invention in 1947) as a true three‐dimensional (3D) imaging technology that can replicate 3D scenes in free space.
Małgorzata Kujawińska, Byoungho Lee, Jinwoong Kim, Taegeun Kim   +3 more
doaj   +1 more source

Neutron optical beam splitter from holographically structured nanoparticle-polymer composites

, 2010
We report a breakthrough in the search for versatile diffractive elements for cold neutrons. Nanoparticles are spatially arranged by holographical means in a photopolymer. These grating structures show remarkably efficient diffraction of cold neutrons up
C. Pruner, C. V. Raman, H. Eckerlebe, H. Kogelnik, H. Lemmel, H. Rauch, H. Rauch, I. Drevenšek Olenik, J. Klepp, J. Kohlbrecher, M. A. Ellabban, M. Bichler, M. Fally, R. A. Rupp, R. Extermann, T. Nakamura, V. F. Sears, Y. Tomita   +17 more
core   +1 more source

Metasurfaces in Adaptive Optics: A New Opportunity in Optical Wavefront Sensing

Laser &Photonics Reviews, Volume 19, Issue 24, December 17, 2025.
Wavefront sensing constitutes a critical component of adaptive optics systems, aimed at quantitatively measuring distorted wavefronts and enabling closed‐loop correction in optical setups. Metasurfaces, as planar optical elements composed of nanoscale structures, provide exceptional freedom in modulating multiple dimensions of the light field.
Rundong Fan, Zichao Wang, Pei Li, Lei Huang   +3 more
wiley   +1 more source

Short-time Fourier transform laser Doppler holography [PDF]

, 2013
We report a demonstration of laser Doppler holography at a sustained acquisition rate of 250 Hz on a 1 Megapixel complementary metal-oxide-semiconductor (CMOS) sensor array and image display at 10 Hz frame rate.
Atlan, Michael, Samson, Benjamin
core   +4 more sources

Evidence of Power‐Law Scaling Regimes for Nanoscale‐Resolved Reaction Rates at Mineral‐Water Interfaces

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract We report the first quantitative analysis of statistical scaling of dissolution rates driving nanoscale self‐organization of the interface between a mineral and flowing water. Our study provides evidence of emergence of cross‐over between two power‐law scaling regimes characterized by distinct levels of persistence.
C. Recalcati, M. Riva, A. Guadagnini
wiley   +1 more source

Noise and aliases in off-axis and phase-shifting holography [PDF]

, 2008
We have compared the respective efficiencies of off-axis and phase-shifting holography in terms of noise and aliases removal. The comparison is made by analyzing holograms of an USAF target backlit with laser illumination, recorded with a charge-coupled ...
Ansari, Colomb, Creath, Cuche, Cuche, Gabor, Goodmann, Gross, Guo, Kato, Kreis, LeClerc, Leith, Marquet, Massatsch, Massig, Nomura, Pu, Schnars, Schnars, Tamano, Yamaguchi, Yamaguchi, Yamaguchi, Yamaguchi, Zhang, Zhang   +26 more
core   +2 more sources