Results 31 to 40 of about 180,863 (279)

Investigation of the coherent combination of a 19-fiber laser beam characteristics to achieve a multi tens of kW at a distance of 10 km [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2019
In this paper, we used a coherent beam combination to design a 50 kW high power laser beam for energy applications. Because of the strong environmental turbulence, degrade the coherent beam combination advantages, low turbulence level is considered ...
S.H Ghasemi, A Haghparast
doaj   +1 more source

On-Demand Phase Control of a 7-Fiber Amplifiers Array with Neural Network and Quasi-Reinforcement Learning

open access: yesPhotonics, 2022
We report a coherent beam combining technique using a specific quasi-reinforcement learning scheme. A neural network learned by this method enables the tailoring and locking of a tiled beam array on any phase map.
Maksym Shpakovych   +6 more
doaj   +1 more source

The standard quantum limit of coherent beam combining

open access: yesNew Journal of Physics, 2019
Coherent beam combining refers to the process of generating a bright output beam by merging independent input beams of individually diffusing relative phases by locking them to each other.
C R Müller   +5 more
doaj   +1 more source

Intense vortical-field generation using coherent superposition of multiple vortex beams

open access: yesScientific Reports, 2023
Coherent beam combining technology applied to multiple vortex beams is a promising method to generate high-power vortex beams. We utilize the coherent combination of multiple Laguerre-Gaussian beams at the waist plane and propose theoretically a ...
Xinju Guo   +6 more
doaj   +1 more source

Power-scalable generation of high-order optical vortices via coherent beam combining [PDF]

open access: yesAPL Photonics
Structured light beams, such as optical vortices carrying orbital angular momentum, are essential for applications ranging from low power optical communications to high-intensity laser–matter interactions.
Hossein Fathi   +2 more
doaj   +1 more source

Phasing methods of tiled-aperture coherent beam combining for high peak power lasers [PDF]

open access: yesEPJ Web of Conferences, 2019
We demonstrate two type phasing methods for tiled-aperture coherent beam combining for high-power lasers based on the near and far field measurement techniques respectively, a comparison is made.
Peng Chun   +4 more
doaj   +1 more source

Continuous Tracking and Pointing of Coherent Beam Combining System via Target-in-the-Loop Concept

open access: yesIEEE Photonics Technology Letters, 2021
We demonstrate a technique to realize fine target tracking and pointing using target-in-the-loop (TIL) concept via a coherent beam combining (CBC) system.
Xu Yang   +6 more
semanticscholar   +1 more source

Effect of beam profile and partial coherence on coherent beam combining performance

open access: yesOptics 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
openaire   +1 more source

Passive Coherent Polarization Beam Combination of a Four-Fiber Amplifier Array

open access: yesIEEE Photonics Journal, 2013
We present what we believe to be a new architecture for coherent beam combination of a fiber amplifier array. Four polarization-maintained fiber amplifiers are passively coherent polarization beam combined by using an optical feedback in a ring cavity ...
P. F. Ma   +5 more
doaj   +1 more source

132 W 132 μJ Femtosecond Pulses from a Coherently Combined System of Two Rod-Type Photonic Crystal Fibers

open access: yesPhotonics, 2023
A coherent beam combination has the potential to revolutionize high-peak-power laser systems. However, achieving a high-average-power ultrashort pulse is difficult due to the accumulation of a nonlinear phase and gain narrowing.
Gehui Xie   +11 more
doaj   +1 more source

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