Results 31 to 40 of about 841,302 (305)

Pre- and juxtapapillary arterial loops in eyes with tilted disc syndrome and inferior staphyloma

open access: yesAmerican Journal of Ophthalmology Case Reports, 2021
Purpose: To report and discuss the association between pre- or juxtapapillary arterial loops and tilted disc syndrome (TDS). Observations: Three patients, aged 43–59 years, with both conditions were examined in a tertiary referral center, and underwent ...
Salomon Yves Cohen, Sylvia Nghiem-Buffet
doaj   +1 more source

Sensitivity of synthetic aperture laser optical feedback imaging

open access: yes, 2012
In this paper we compare the sensitivity of two imaging configurations both based on Laser Optical Feedback Imaging (LOFI). The first one is direct imaging, which uses conventional optical focalisation on target and the second one is made by Synthetic ...
Aleksoff   +33 more
core   +2 more sources

THz QCL - Based active imaging applied to composite materials diagnostic [PDF]

open access: yes, 2010
This paper presents a CW raster-scanning THz imaging setup, used to perform Non-Destructive Testing of Kevlar and carbon fibre samples. The setup uses a 2.5 THz Quantum Cascade Laser as a source.
Barbieri, Stefano   +4 more
core   +1 more source

Pre-determining the location of electromigrated gaps by nonlinear optical imaging

open access: yes, 2014
In this paper we describe a nonlinear imaging method employed to spatially map the occurrence of constrictions occurring on an electrically-stressed gold nanowire.
A. Bouhelier   +5 more
core   +2 more sources

Wide-field optical sectioning for live-tissue imaging by plane-projection multiphoton microscopy [PDF]

open access: yes, 2011
Optical sectioning provides three-dimensional (3D) information in biological tissues. However, most imaging techniques implemented with optical sectioning are either slow or deleterious to live tissues.
Blake, Geoffrey A.   +7 more
core   +1 more source

Laser imaging of the retina [PDF]

open access: yesBritish Journal of Ophthalmology, 1999
The development of the scanning laser ophthalmoscope (SLO), first conceived by Webb et al in 19801 heralded the first widespread application of lasers for retinal imaging. A highly collimated beam from a laser is swept over the retina delivering all its energy to a very small spot for a very short time, typically of the order of some tens of ...
P F, Sharp   +3 more
openaire   +2 more sources

Dynamical density wave order in an atom–cavity system

open access: yesNew Journal of Physics, 2021
We theoretically and experimentally explore the emergence of a dynamical density wave (DW) order in a driven dissipative atom–cavity system. A Bose–Einstein condensate is placed inside a high finesse optical resonator and pumped sideways by an optical ...
Christoph Georges   +4 more
doaj   +1 more source

Sub-wavelength surface IR imaging of soft-condensed matter

open access: yes, 2010
Outlined here is a technique for sub-wavelength infrared surface imaging performed using a phase matched optical parametric oscillator laser and an atomic force microscope as the detection mechanism.
Aizpurua   +28 more
core   +3 more sources

Quantitative modeling of laser speckle imaging [PDF]

open access: yes, 2006
We have analyzed the image formation and dynamic properties in laser speckle imaging (LSI) both experimentally and with Monte-Carlo simulation. We show for the case of a liquid inclusion that the spatial resolution and the signal itself are both ...
Alfred Buck   +17 more
core   +3 more sources

THz QCL - Based active imaging applied to composite materials diagnostic [PDF]

open access: yes, 2009
This paper is a presentation of the recently developed researches at OLIMPES laboratory in the field of active imaging using THz Quantum Cascade Laser applied to composite materials ...
Barbieri, Stefano   +4 more
core   +1 more source

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