Results 21 to 30 of about 18,408 (262)
Average and statistical properties of coherent radiation from steady-state microbunching
Journal of Synchrotron Radiation, 2023 A promising accelerator light source mechanism called steady-state microbunching (SSMB) is being actively studied. With the combination of strong coherent radiation from microbunching and high repetition rate of a storage ring, high-average-power narrow ...
X. J. Deng +9 more
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Theory of AdaDelSPGD Algorithm in Fiber Laser-Phased Array Multiplex Communication Systems
Applied Sciences, 2022 Stochastic parallel gradient descent (SPGD) algorithm is one of the most promising methods for effective coherent beam combination. However, the algorithm also has some disadvantages, such as slow convergence speed and local extremum. This paper proposes
Jiayu Chen +6 more
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Effect of beam profile and partial coherence on coherent beam combining performance
Optics Communications, 2019 Abstract A numerical model of a coherent beam composed of a two-dimensional array of laser beams was developed; the model enables analysis of random phase mismatch in the combined system, as well as analysis of the influence of atmospheric turbulence.
Jan K. Jabczynski, Przemyslaw Gontar
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Optical Angular Momentum Beam Generation Using Coherent Beam Combination
Photonics(1) Background: The significant progress observed over the last two decades in coherent beam combining (CBC) technology has mainly focused on its applications in high-energy physics and laser weapons.
Przemyslaw Gontar +3 more
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Coherent beam combining of optical vortices
, 2023 We experimentally demonstrate the power scaling of optical vortices by the coherent beam combining, encompassing topological charges ranging from l=1 to l=5 realized on the basis of a Yb-doped fiber short-pulsed laser system. The combining efficiency varies from 83.2 to 96.9% depending on the topological charge and beam pattern quality generated by the
Fathi, Hossein +2 more
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Coherent beam combining of optical vortices
Optics LettersWe experimentally demonstrate the power scaling of optical vortices using the coherent beam combining technique, encompassing topological charges ranging from ℓ = 1 to ℓ = 5 realized on the basis of a Yb-doped fiber short-pulsed laser system. The combining efficiency varies from 83.2 to 96.9% depending on the topological charge and beam pattern quality
Hossein Fathi +3 more
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Simulation of incoherent ion effects in electron storage rings
Physical Review Accelerators and Beams, 2021 Ion trapping occurs when a negatively charged beam ionizes residual gas inside an accelerator vacuum chamber, and the resulting ions become trapped in the beam potential.
J. Calvey, M. Borland
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Echo-enabled harmonic generation free electron laser
Physical Review Special Topics. Accelerators and Beams, 2009 In this paper, we systematically study the echo-enabled harmonic generation (EEHG) free electron laser (FEL). The EEHG FEL uses two modulators in combination with two dispersion sections that allow one to generate in the beam a high harmonic density ...
Dao Xiang, Gennady Stupakov
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Mode attraction, rejection and control in nonlinear multimode optics
Nature Communications, 2023 Novel fundamental notions helping in the interpretation of the complex dynamics of nonlinear systems are essential to our understanding and ability to exploit them.
Kunhao Ji +5 more
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IEEE Photonics Journal, 2021 Coherent beam combination of fiber laser phased array is a promising technique to achieve high-brightness laser output. In this paper, we focus on central-lobe energy enhancement of the combined beam in the far-field by theoretically and experimentally ...
Jing Zuo +11 more
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