Results 31 to 40 of about 16,467 (243)

Passive introduction of carrier fringes in real-time photo refractive interferometers for single interferogram analysis [PDF]

Journal of the European Optical Society-Rapid Publications, 2006
We propose a new technique to introduce carrier fringes in an holographic interferometric set-up for deformation or vibration analyses. This technique makes use of the anisotropic diffraction processes of photorefractive crystals.
Pauliat Gilles, Roosen Gérald, Georges Marc P., Pedrini Giancarlo   +3 more
doaj   +1 more source

A common-path digital holographic microscope with a rotatable birefringent prism for synthesizing high-quality quantitative phase images from multi-angle interferograms

Results in Physics, 2021
We propose a simple common-path off-axis interferometric system to perform high-quality quantitative phase imaging based on a rotatable birefringent prism that is placed at the output port of a conventional transmission or reflection microscope.
Hsiao-Ning Weng, Chu-Yu Huang
doaj   +1 more source

Dual-wavelength digital holographic interferometry for technical applications

Научно-технический вестник информационных технологий, механики и оптики
A method of dual-wavelength digital holographic interferometry for analyzing and controlling surface shape for technical applications, including surfaces exposed to high-temperature plasma in fusion reactors, is presented.
I. V. Alekseenko, A. M. Kozhevnikova
doaj   +1 more source

PhaseWare: Phase map retrieval for fringe projection profilometry and off-axis digital holographic interferometry

SoftwareX, 2021
Fringe projection profilometry and off-axis digital holographic interferometry are two techniques commonly used for non-contact optical surface measurement and movement tracking; however, they can be difficult to implement due to the complex software ...
Parsa Omidi, Lawrence C.M. Yip, Hui Wang, Mamadou Diop, Jeffrey J.L. Carson   +4 more
doaj   +1 more source

On the Digital Holographic Interferometry of Fibrous Material, I. Optical Properties of Polymer and Optical Fibers

, 2012
The digital holographic interferometry (DHI) was utilized for investigating the optical properties of polymer and optical fibers. The samples investigated here were polyvinylidene fluoride (PVDF) polymer fiber and graded-index (GRIN) optical fiber.
Barakat, C. von Kopylow, Chengand, de Angelis, El-Dessouky, El-Morsy, Gabor, H.M. El-Dessouky, Hamza, Hamza, Hamza, Hamza, Hibino, Hossain, K.M. Yassien, Kreis, Liu, M. Agour, Pluta, Pluta, Rappaz, Schnars, Schnars, Schnars, Simmens, Stetson, Surrel, Wahba, Yaroslavsky, Yassien, Zanger, Zhang   +31 more
core   +1 more source

Curvy Surface Reconstruction

Advanced Science, EarlyView.
This review introduces the concept of “general curvy surface reconstruction,” which incorporates both geometric and physical dimensions, representing an upgrade over conventional geometric reconstruction that focuses solely on spatial relationships. Particular emphasis is placed on the emerging opportunities enabled by advanced measurement techniques ...
Chen Shang, Haoyu Qi, Zhigang Wang, Keyu Meng, Zeye Liu, Zeng Meng, Yu Yang, Jianjun Wang, Shan Jiang   +8 more
wiley   +1 more source

Computational de-noising based on deep learning for phase data in digital holographic interferometry

APL Photonics, 2020
This paper presents a deep-learning-based algorithm dedicated to the processing of speckle noise in phase measurements in digital holographic interferometry.
Silvio Montresor, Marie Tahon, Antoine Laurent, Pascal Picart   +3 more
doaj   +1 more source

Verification of ESPI Stress Analysis by Means Of FEM [PDF]

Transactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2013
The main goal of this paper is verification of accuracy of ESPI strain sensor Dantec dynamics Q-100. ESPI is the digital holographic interferometry method for measuring small displacements and deformations.
Luboš PEČENKA, Matúš KALINA, Radim HALAMA   +2 more
doaj   +1 more source

Finite fringe hologram [PDF]

, 1970
In holographic interferometry a small movement of apparatus between exposures causes the background of the reconstructed scene to be covered with interference fringes approximately parallel to each other.
Heflinger, L. O.
core   +1 more source

Harmonically matched grating-based full-field quantitative high-resolution phase microscope for observing dynamics of transparent biological samples [PDF]

, 2007
We have developed a full-field high resolution quantitative phase imaging technique for observing dynamics of transparent biological samples. By using a harmonically matched diffraction grating pair (600 and 1200 lines/mm), we were able to obtain non ...
Heng, Xin, Wu, Jigang, Yang, Changhuei, Yaqoob, Zahid   +3 more
core   +1 more source