Results 21 to 30 of about 38,273,342 (166)

Speckle-field digital holographic microscopy [PDF]

SPIE Proceedings, 2009
The use of coherent light in conventional holographic phase microscopy (HPM) poses three major drawbacks: poor spatial resolution, weak depth sectioning, and fixed pattern noise due to unwanted diffraction. Here, we report a technique which can overcome these drawbacks, but maintains the advantage of phase microscopy - high contrast live cell imaging ...
Park, Y Park, YongKeun, Choi, W Choi, Wonshik, Yaqoob, Z Yaqoob, Zahid, Dasari, R Dasari, Ramachandra, Badizadegan, K Badizadegan, Kamran, Feld, MS Feld, Michael S.   +5 more
openaire   +4 more sources

Digital holographic microscopy for 3D tracking of bacterial swimming

, 2023
Thesis describing the model behind in-line digital holographic microscopy with its application of tracking bacterial swimming in 3D.
Babenko (15192367)
core   +1 more source

Dynamic Speckle Illumination Digital Holographic Microscopy by Doubly Scattered System

Photonics, 2021
The coherent noise always exists in digital holographic microscopy due to the laser source, degrading the image quality. A method of speckle suppression using the dynamic speckle illumination, produced by double-moving diffusers, is presented in digital ...
Yun Liu, Peihua Bu, Mingxing Jiao, Junhong Xing, Ke Kou, Tianhong Lian, Xian Wang, Yumeng Liu   +7 more
doaj   +1 more source

Quantitative label-free cell imaging by means of digital holographic miscroscopy: a roadmap for a complete characterization of biological samples [PDF]

, 2011
The research activity, performed at the institute for Microelectronic and Microsystems, has been devoted to the study and the development of non-destructive optical techniques for morphological analysis of biological samples.
Di Caprio, Giuseppe
core   +1 more source

A holographic system for subsea recording and analysis of plankton and other marine particles (HOLOMAR) [PDF]

, 2003
We report here details of the design, development, initial testing and field-deployment of the HOLOMAR system for in-situ subsea holography and analysis of marine plankton and nonliving particles.
Player, M.A., P.R. Hobson, V. Chalvidan, J. Watson, Chalvidan, V., Hobson, PR, Alexander, S, Hendry, DC, Chalvidan, V, Nareid, H., Tipping, K, K. Tipping, Lampitt, R.S., J.J. Nebrensky, Player, MA, Tipping, K., A. Pescetto, A. Diard, M.A. Player, Pieroni, GG, S. Serpico, Trucco, A., Watson, J, Trucco, A, R.S. Lampitt, Serpico, S., Nebrensky, JJ, Saw, K, S. Alexander, G.G. Pieroni, Watson, J., S. Gentili, Alexander, S., Diard, A, Hendry, D.C., Saw, K., Hobson, P.R., Foresti, GL, Lampitt, RS, Nareid, H, Craig, G., Nebrensky, J.J., D.C. Hendry, G. Craig, G.L. Foresti, Diard, A., Pescetto, A., Foresti, G.L., Craig, G, Pieroni, G.G., Serpico, S, H. Nareid, A. Trucco, Gentili, S., Gentili, S, Pescetto, A, K. Saw, Nareid H., Tipping K., SERPICO, SEBASTIANO, Lampitt RS, Watson J, Foresti GL, Alexander S., Pescetto A., Hobson PR, Player MA, Saw K., Pieroni GG, Hendry DC, Nebrensky JJ, Craig G., Diard A., Chalvidan V., Gentili S., TRUCCO, ANDREA   +75 more
core   +1 more source

Linearity and Optimum-Sampling in Photon-Counting Digital Holographic Microscopy

Photonics, 2022
In the image plane configurations frequently used in digital holographic microscopy (DHM) systems, interference patterns are captured by a photo-sensitive array detector located at the image plane of an input object.
Nazif Demoli, Denis Abramović, Ognjen Milat, Mario Stipčević, Hrvoje Skenderović   +4 more
doaj   +1 more source

Characterization of microlenses by digital holographic microscopy [PDF]

Applied Optics, 2006
We demonstrate the use of digital holographic microscopy (DHM) as a metrological tool in micro-optics testing. Measurement principles are compared with those performed with Twyman-Green, Mach-Zehnder, and white-light interferometers. Measurements performed on refractive microlenses with reflection DHM are compared with measurements performed with ...
Charrière, Florian, Kühn, Jonas, Colomb, Tristan, Montfort, Frédéric, Cuche, Etienne, Emery, Yves, Weible, Kenneth, Marquet, Pierre, Depeursinge, Christian   +8 more
openaire   +4 more sources

Study on Quantitative Phase Imaging by Dual-Wavelength Digital Holography Microscopy

International Journal of Optics, 2018
A dual-wavelength digital holographic microscopy with premagnification is proposed to obtain the object surface measurements over the large gradient. The quantitative phase images of specimens are captured in high precision by the processing of filtering
Lin Hu, Yunxiu Shui, Yaohui Dai, Haiyu Wu, Gang Zhu, Yan Yang   +5 more
doaj   +1 more source

Image Contrast Improvement in Interference-Dark-Field Digital Holographic Microscopy

Photonics, 2021
Conventional dark-field digital holographic microscopy (DHM) techniques require the use of specialized optics, and, thus, obtaining dark-field images with high contrast has a high cost. Herein, we propose a DHM system that uses an interference-dark-field
Chi-Ching Chang, Yang-Kun Chew, Huang-Tian Chan, Mei-Fang Chou, Je-Chung Wang   +4 more
doaj   +1 more source

Digital Holographic Microscopy

Microscopy 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, Ichirou Yamaguchi, Hywel Morgan   +2 more
openaire   +1 more source