Results 1 to 10 of about 882,657 (175)
Demonstration of a beam loaded nanocoulomb-class laser wakefield accelerator [PDF]
Nature Communications, 2017 Higher beam quality and stability are desired in laser-plasma accelerators for their applications in compact light sources. Here the authors demonstrate in laser plasma wakefield electron acceleration that the beam loading effect can be employed to ...
J. P. Couperus +14 more
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X-ray beam quality checks of a magnetic resonance-guided linear accelerator with its on-board megavoltage imager [PDF]
Physics and Imaging in Radiation OncologyThis study presents a method for fast and low-cost X-ray beam quality checks of magnetic resonance-guided radiotherapy (MRgRT) linacs using the on-board megavoltage imager (MVI).
Guido C. Hilgers +6 more
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On beam quality and flatness of radiotherapy megavoltage photon beams. [PDF]
Australas Phys Eng Sci Med, 2016 Ratio of percentage depth dose (PDD) at two depths, PDD at a depth of 10 cm (PDD10), and beam flatness are monitored regularly for radiotherapy beams for quality assurance. The purpose of this study is to understand the effects of changes in one of these parameters on the other. Is it possible to monitor only the beam flatness and not PDD?
Hossain M, Rhoades J.
europepmc +4 more sources
Frontiers in Physics, 2023 Deformable mirrors (DMs) are widely used in high-power laser systems to improve the output beam quality. However, under high-power laser irradiation, the heat accumulates on the DM mirror surface and results in high-power laser induced distortions (LID),
Yamin Zheng +11 more
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Frontiers in Physics, 2021 The propagation characteristics of a Hermite-Gaussian correlated Schell-model (HGCSM) beam in the turbulence of biological tissue are analyzed. The average intensity, spectral degree of coherence, and the dependence of the propagation factors on the beam
Hanghang Zhang +4 more
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Impact of the central refractive index dip of fibers on high-power applications
Frontiers in Physics, 2023 Central refractive index dip is a common phenomenon in the fibers fabricated by the modified chemical vapor deposition (MCVD) technology, which is the main fabrication technique for high-power laser fibers.
Yi An +21 more
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Photonics, 2023 The Vertical Cavity Surface-Emitting Laser (VCSEL) has led to the rapid development of advanced fields such as communication, optical sensing, smart cars, and more. The accurate testing of VCSEL beam quality is an important prerequisite for its effective
Leilei Jia, Xin Qian, Lingyu Ai
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Fabrication of a Counter-Directional Pump/Signal Combiner with Built-In Mode Field Adapter
Photonics, 2023 This article introduces a novel counter-directional pump/signal combiner with a built-in mode field adapter. This combiner offers additional functionality to address the problem of mode field mismatch between the gain fiber and delivery fiber, which ...
Jiawei Wang +6 more
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Research on Adjustable Ring-Mode Fiber Signal Combiner
Photonics, 2023 Nowadays, fiber laser has been widely used in industrial processing, especially in welding, cutting and other fields, and the appearance of adjustable ring-mode fiber laser improves effectively the quality of processing.
Min Fu +5 more
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M2 factor for evaluating fiber lasers from large mode area few-mode fibers
Frontiers in Physics, 2023 Evaluating the laser quality accurately is one of the most important and fundamental physical issues for laser sources, and the beam quality of lasers from the large mode area few-mode fibers have been haunted by the presence of high order mode for many ...
Rumao Tao +7 more
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