Results 21 to 30 of about 180,863 (279)
Coherent combining of self-cleaned multimode beams [PDF]
Scientific Reports, 2020 AbstractA low intensity light beam emerges from a graded-index, highly multimode optical fibre with a speckled shape, while at higher intensity the Kerr nonlinearity may induce a spontaneous spatial self-cleaning of the beam. Here, we reveal that we can generate two self-cleaned beams with a mutual coherence large enough to produce a clear stable ...
Fabert, Marc +11 more
openaire +6 more sources
Optics Express, 2023 Based on Dammann vortex grating and adaptive gain stochastic parallel gradient descent algorithm, we theoretically proposed a phase control technology scheme of the coherent beam combining system for generating perfect vectorial vortex beams (VVBs).
Pei Ju +6 more
semanticscholar +1 more source
Dynamic focus shaping with mixed-aperture coherent beam combining. [PDF]
Optics Letters, 2021 A novel concept for dynamic focus shaping based on highly efficient coherent beam combining with micro-lens arrays (MLAs) as the combining element is presented.
Maike Prossotowicz +7 more
semanticscholar +1 more source
Scalable Acoustical Frequency Tagging Coherent Beam Combining Based on Digital Signal Processing
IEEE Access, 2023 We present the module of booster amplifier for coherent beam combining Master Oscillator Power Amplifier (MOPA) system to operate with a text narrow-linewidth seed laser. The goal was to achieve a highly modular system, manifested in the ease of changing
Pawel R. Kaczmarek +2 more
doaj +1 more source
Terahertz shaping technology based on coherent beam combining
Chinese Physics B, 2023 The generation of terahertz (THz) waves by focusing a femtosecond pulsed laser beam at a distance is able to overcome the strong absorption properties of air and has rapidly attracted the attention of industry. However, the poor directionality of the THz
Xiao-Ran Zheng +4 more
semanticscholar +1 more source
Discussion on Piston-Type Phase Ambiguity in a Coherent Beam Combining System
Photonics, 2022 Coherent beam combining (CBC) with closely arranged centrosymmetric arrays is a promising way to obtain a high-brightness laser. An essential task in CBC is to actively control the piston phases of the input beams, maintaining the correct phasing to ...
Haolong Jia +9 more
doaj +1 more source
IEEE Photonics Journal, 2022 The former reports of coherent beam combining (CBC) in the ultra-intense ultra-short laser field focus on the phase control technology and two-beam CBC.
Chun Peng +3 more
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Optics and lasers in engineering, 2022 In this manuscript, complex degree of coherence (CDC) is proposed to depict the spectral characteristics of narrow-linewidth fiber lasers in coherent beam combining (CBC) system. Both the theoretical and experimental demonstrations are shown that the CDC
Wenchang Lai +8 more
semanticscholar +1 more source
Non-Iterative Ring Beam Shaping Using Phase Control in Coherent Beam Combining [PDF]
EPJ Web of ConferencesWe propose a deterministic method for ring-shaped beam synthesis in coherent beam combining (CBC) systems using phase-only control. A calibrated propagation operator is inverted via a Tikhonov-regularized pseudoinverse to directly compute the required ...
Soni Khushboo, Kanagaraj Nithyanandan
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Far field energy distribution control using a coherent beam combining femtosecond digital laser.
Optics Express, 2022 We report on far field energy distribution control using a coherent beam combining femtosecond digital laser employing 61 tiled channels. Each channel is considered as an individual pixel where amplitude and phase are controlled independently. Applying a
I. Fsaifes +4 more
semanticscholar +1 more source