Results 21 to 30 of about 221,747 (248)

Transmission Characteristics and Spatial Coherence of Partially Coherent Light-Emitting Diode Array in the Ocean

open access: yesPhotonics, 2023
Underwater LED light sources are commonly implemented in array configurations with a wide-angle field of view, primarily catering to high-speed communication within a few meters.
Zhifang Miao   +4 more
doaj   +1 more source

Nonlinear generation of hollow beams in tunable plasmonic nanosuspensions

open access: yesAPL Photonics, 2023
We experimentally demonstrate that a probe beam at one wavelength, although exhibiting a weak nonlinear response on its own, can be modulated and controlled by a pump beam at another wavelength in plasmonic nanosuspensions, leading to ring-shaped pattern
Jingyan Zhan   +10 more
doaj   +1 more source

Efficient Switchable Common Path Interferometer for Transmission Matrix Characterization of Scattering Medium

open access: yesIEEE Photonics Journal, 2022
Transmission matrix can be used as an elegant tool to represent the light transmission characteristics of a scattering medium. In this paper, we propose a novel common path interferometer technique to measure the transmission matrix utilizing the ...
Han Gao   +4 more
doaj   +1 more source

Abnormally autofocusing vortex Swallowtail Gaussian vector beam with low spatial coherence

open access: yesNew Journal of Physics, 2023
The precondition for the application of light beams is the ability to devise light distribution with high precision. Controlling more dimensions for structured light fields is an effective method to improve the ability to devise light distribution.
Jingyi Shi   +5 more
doaj   +1 more source

Common operation metrics for storage ring light sources

open access: yesPhysical Review Accelerators and Beams, 2016
Storage ring light sources aim for high operational reliability. Very often beam availability is used as an operation metric to measure the reliability.
A. Lüdeke   +6 more
doaj   +1 more source

Beam Purity for Light Dark Matter Search in Beam Dump Experiments

open access: yesAdvances in High Energy Physics, 2015
This paper reviews the search for light dark matter in beam dump experiments with a special emphasis on the necessity of beam purity for precise background rejection at the sensitivities aimed at these experiments.
D. Banerjee, P. Crivelli, A. Rubbia
doaj   +1 more source

Beam Tailoring Devices Using Transmission-Type Subwavelength Grating

open access: yesPhotonics, 2023
Subwavelength gratings (SWGs) possess an excellent ability to manipulate the wavefronts of light waves. We investigated the beam tailoring mechanism of aperiodic SWGs in our current work, and a bifocal lens, a beam splitter, and a beam combiner based on ...
Gang Wu   +3 more
doaj   +1 more source

Understanding and measuring mechanical signals in the tumor stroma

open access: yesFEBS Open Bio, EarlyView.
This review discusses cancer‐associated fibroblast subtypes and their functions, particularly in relation to extracellular matrix production, as well as the development of 3D models to study tumor stroma mechanics in vitro. Several quantitative techniques to measure tissue mechanical properties are also described, to emphasize the diagnostic and ...
Fàtima de la Jara Ortiz   +3 more
wiley   +1 more source

Semi‐automated hippocampal avoidance whole‐brain radiotherapy planning

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Hippocampal avoidance whole‐brain radiotherapy (HA‐WBRT) is designed to spare cognitive function by reducing radiation dose to the hippocampus during the treatment of brain metastases. Current manual planning methods can be time‐consuming and may vary in quality, necessitating the development of automated approaches to streamline ...
Dong Joo Rhee   +9 more
wiley   +1 more source

Advantages and limitations of navigation‐based multicriteria optimization (MCO) in selectively sparing pharyngeal constrictor muscles in head and neck radiotherapy treatment planning

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Sparing pharyngeal constrictor muscles (PCMs) during radiotherapy improves patient‐reported swallowing function. This study aimed to explore the feasibility of integrating knowledge‐based planning (KBP) with multicriteria optimization (MCO) in Eclipse v18.0 to selectively spare PCM, quantify the required trade‐off in prophylactic ...
Laura K. Howard   +3 more
wiley   +1 more source

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