Results 1 to 10 of about 19,361 (300)

Single step phase optimisation for coherent beam combination using deep learning [PDF]

Scientific Reports, 2022
Coherent beam combination of multiple fibres can be used to overcome limitations such as the power handling capability of single fibre configurations. In such a scheme, the focal intensity profile is critically dependent upon the relative phase of each ...
Ben Mills, James A. Grant-Jacob, Matthew Praeger, Robert W. Eason, Johan Nilsson, Michalis N. Zervas   +5 more
doaj   +3 more sources

Single-step phase identification and phase locking for coherent beam combination using deep learning [PDF]

Scientific Reports
Coherent beam combination offers a solution to the challenges associated with the power handling capacity of individual fibres, however, the combined intensity profile strongly depends on the relative phase of each fibre. Optimal combination necessitates
Yunhui Xie, Fedor Chernikov, Ben Mills, Yuchen Liu, Matthew Praeger, James A. Grant-Jacob, Michalis N. Zervas   +6 more
doaj   +3 more sources

Deep learning for simultaneous phase and amplitude identification in coherent beam combination [PDF]

Scientific Reports
Coherent beam combination has emerged as a promising strategy for overcoming the power limitations of individual fibre lasers. This approach relies on maintaining precise phase difference between the constituent beamlets, which are typically established ...
Fedor Chernikov, Yunhui Xie, James A. Grant-Jacob, Yuchen Liu, Michalis N. Zervas, Ben Mills   +5 more
doaj   +3 more sources

Scaling potential of beam-splitter-based coherent beam combination

Optics Express, 2021
The impact of nonlinear refraction and residual absorption on the achievable peak- and average power in beam-splitter-based coherent beam combination is analyzed theoretically. While the peak power remains limited only by the aperture size, a fundamental average power limit is given by the thermo-optical and thermo-mechanical properties of the beam ...
Müller, Michael, Aleshire, Christopher, Buldt, Joachim, Stark, Henning, Grebing, Christian, Klenke, Arno, Limpert, Jens   +6 more
core   +6 more sources

Coherent beam combining with micro-lens arrays [PDF]

Optics Letters, 2020
A novel, to the best of our knowledge, concept for coherent beam combining is presented based on a simple setup with micro-lens arrays. These standard components are used in a proof-of-principle experiment for both coherent beam splitting and a combination of 5 × 5 beams. Here a combination efficiency above 90% is achieved.
Prossotowicz, Maike, Heimes, Andreas, Flamm, Daniel, Jansen, Florian, Otto, Hans-Jürgen, Budnicki, Aleksander, Killi, Alexander, Morgner, Uwe   +7 more
openaire   +4 more sources

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

IEEE 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, P. Zhou, R. T. Su, Y. X. Ma, X. L. Wang, Z. J. Liu   +5 more
doaj   +3 more sources

Low differential phase noise ytterbium-doped fiber amplifier system for coherent beam combination [PDF]

EPJ Web of Conferences
A two-channel ytterbium-doped fiber amplifier system with active phase-locking reaches a differential phase noise of only 40 mrad (X/160) at 200-W channel power.
Yu Weilong, Hou Changshun, Kerridge-Johns William R., Nilsson Johan   +3 more
doaj   +2 more sources

Passive Phase Locking Coherent Combination of Solid-State Lasers through Stimulated Brillouin Scattering Effect

Photonics, 2023
The stimulated Brillouin scattering (SBS) effect, a new approach to the combination of solid-state lasers, can be actualized via coherent synthesis. In this paper, a solid-state laser based on SBS passive phase locking, utilizing the master oscillator ...
Yu Yu, Kai Li, Changyu Song, Hengzhe Yu, Di Wu, Zhipeng Xu, Yulei Wang, Zhiwei Lu   +7 more
doaj   +2 more sources

Realization of large energy proportion in the central lobe by coherent beam combination based on conformal projection system [PDF]

Scientific Reports, 2017
In this paper, we experimentally validate a tiled-aperture conformal projection system with the largest array filling factor and element beam truncation factor to the best of our knowledge. The conformal projection system, which is made up of a hexagonal
Dong Zhi, Zhixin Zhang, Yanxing Ma, Xiaolin Wang, Zilun Chen, Wuming Wu, Pu Zhou, Lei Si   +7 more
doaj   +2 more sources

Electron beam profile imaging in the presence of coherent optical radiation effects

Physical Review Special Topics. Accelerators and Beams, 2012
High-brightness electron beams with low energy spread at existing and future x-ray free-electron lasers are affected by various collective beam self-interactions and microbunching instabilities. The corresponding coherent optical radiation effects, e.g.,
Christopher Behrens, Christopher Gerth, Gero Kube, Bernhard Schmidt, Stephan Wesch, Minjie Yan   +5 more
doaj   +2 more sources