Results 21 to 30 of about 11,983 (293)

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

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

Dynamic focus shaping with mixed-aperture coherent beam combining

open access: yes, 2021
A novel concept for dynamic focus shaping based on highly efficient coherent beam combining with microlens arrays (MLA) as combining element is presented.
Aleksander Budnicki (9757301)   +7 more
core   +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

Volume Bragg grating external cavities for the passive phase locking of high-brightness diode laser arrays : theoretical and experimental study [PDF]

open access: yes, 2011
We describe the theoretical modeling of the external-cavity operation of a phase-locked array of diode lasers in two configurations, the self-imaging cavity based on the Talbot effect and the angular-filtering cavity. Complex filtering functions, such as
Jun Lim   +19 more
core   +1 more source

Multiplexed emitting system for an energy-recovery-linac-based coherent light source

open access: yesJournal of Synchrotron Radiation, 2023
Recently, a novel approach has been proposed to produce ultrashort, fully coherent high-repetition-rate EUV and X-ray radiation by combining an energy recovery linac (ERL) with the angular-dispersion-induced microbunching methodology.
Lu Cao   +5 more
doaj   +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

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

HIBISCUS: Simulator for the development of control strategies for coherent beam combining lasers with PISTIL technique [PDF]

open access: yesEPJ Web of Conferences, 2023
CBC (Coherent Beam Combining) is a key technology for the realisation of intense lasers. In this context, PISTIL (PISton and TILt interferometry), a precise metrology tool for measuring segmented wave surfaces, has been developed and used in particular ...
Rousseaux Thomas   +4 more
doaj   +1 more source

Coherent beam combining techniques : an introduction

open access: yes, 2015
Séminaire, 23 janvier 2015, Leibniz Institut / Ferdinand Braun (Berlin)Introduction on coherent beam combining techniques for laser ...
Lucas-Leclin, Gaëlle
core   +3 more sources

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