Results 41 to 50 of about 36,244,343 (204)

High resolution digital holographic synthetic aperture applied to deformation measurement and extended depth of field method [PDF]

open access: yes, 2010
This paper discusses the potential of the synthetic-aperture method in digital holography to increase the resolution, to perform high accuracy deformation measurement, and to obtain a three-dimensional topology map.
Claus, Daniel
core   +1 more source

Simulated holographic three-dimensional intensity shaping of evanescent-wave fields [PDF]

open access: yes, 2008
The size of bright structures in traveling-wave light fields is limited by diffraction. This in turn limits a number of technologies, for example, optical trapping.
Thomson, L.C.   +7 more
core   +1 more source

High-resolution digital holography utilized by the subpixel sampling method [PDF]

open access: yes, 2011
A novel (to our knowledge) approach for resolution improvement in digital holography is presented in this paper. The proposed method is based on recording the incoming interference field on a complementary metal-oxide semiconductor (CMOS) camera with ...
Fritzsche, Marco   +9 more
core   +1 more source

Digital Holographic Microscopy

open access: yesMicroscopy and Microanalysis, 1999
Abstract We applied phase-shifting digital holography to microscopy in this paper. At first lensless microscopy is proposed, in which no optical adjustment is necessary. Then, the method is applied to relax the limitation of focal depth in traditional optical microscopy.
Tong Zhang   +2 more
openaire   +1 more source

Possibilities of holographic techniques in laser scanning microscopy [PDF]

open access: yes, 2015
Holographic scanning microscopy-novel technique both in laser scanning microscopy and digital holographic microscopy allow multimodal approach to cell and tissue investigation in biomedical applications promising new advantages (quantitative phase ...
Muravyeva, M.   +4 more
core   +1 more source

Holographic mensuration of suspended particles in aquatic systems [PDF]

open access: yes, 1995
The distribution and dynamics of aggregates in the aquatic environment play an important role in the modelling of biogeochemical processes. Previous work on aggregates in the ocean (e.g.
Lampitt, RS   +4 more
core   +6 more sources

Tip Crack Imaging on Transparent Materials by Digital Holographic Microscopy

open access: yesJournal of Imaging, 2019
With this study, we propose a method to image the tip crack on transparent materials by using digital holographic microscopy. More specifically, an optical system based on Mach−Zehnder interference along with an inverted microscopy (Olympus CKX53 ...
Wen-Jing Zhou   +6 more
doaj   +1 more source

Blind digital holographic microscopy [PDF]

open access: yesSPIE Proceedings, 2017
A blind variant of digital holographic microscopy is presented that removes the requirement for a well-characterized, highly divergent reference beam. This is achieved by adopting an off-axis recording geometry where a sequence of holograms is recorded as the reference is tilted, and an iterative algorithm that estimates the amplitudes and phases of ...
Anderson, Patrick N.   +9 more
openaire   +1 more source

Photorefractive digital holographic microscopy: an application in the microdevices surfaces

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications
In this work, we present a Photorefractive Digital Holographic Microscopy (PRDHM) technique based on the writing-reading holographic process in photorefractive Bi12TiO20 (BTO) crystal using the numerical reconstruction of the phase and amplitude image ...
Marcos R. R. Gesualdi   +5 more
doaj   +1 more source

Two-step phase shifting differential-recording digital holographic microscopy

open access: yesScientific Reports, 2017
We present two-step phase-shifting differential-recording digital holographic microscopy (TPD-DH in microscopy) for phase imaging of microscopic transparent elements.
Jun-He Han   +4 more
doaj   +1 more source

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