Single-mode annular chirally-coupled core fibers for fiber lasers

Zhang, Haitao; He, Hao; He, Linlu; Gong, Mali

doi:10.1016/j.optcom.2017.10.003

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…[ 381,382 ] There are also some new side core design concepts to reduce the manufacturing difficulty of classic thin side core or achieve a stable orbital angular momentum for multiplexing communications. [ 383,384 ]…”

Section: High Power Fiber Amplifiersmentioning

confidence: 99%

High‐Power Laser Systems

Zuo

Xin

2022

Laser & Photonics Reviews

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High‐power laser sources are widely used in industrial precision processing and act as a new platform for strong‐field physics research using peak power over petawatt. This review focuses on realizing high‐energy solid‐state disk and slab systems and the nonlinear‐suppression strategies for high‐power fiber systems using the functional fibers. First, the implementations and enabling technologies of the solid‐state lasers for increasing peak power from gigawatt to petawatt are reviewed. Then the mechanisms and suppression strategies of the deterioration effects (including stimulated Raman scattering, stimulated Brillouin scattering, and transverse mode instability) in various fiber amplifiers are analyzed. At the same time, the mechanism and achievements of the current functional fibers are introduced. Finally, the challenges and perspectives of high‐power solid‐state and fiber amplifiers are summarized.

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Section: High Power Fiber Amplifiersmentioning

confidence: 99%

High‐Power Laser Systems

Zuo

Xin

2022

Laser & Photonics Reviews

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“…Modeling diagram based on the helical coordinate system. (a) Schematic diagram; (b) modeling of fluid domain; (c) " nn " of the screw; (d) initial section;(e) velocity relations.b,d, a helical coordinate system " sxy ", composed of the s -axis and a follow-up coordinate system " oxy ", was constructed on the upper helicoid of the nut[19,20]. The s -axis gone from point e along the pitch diameter helix of the helicoid, and " oxy " changed along the s -axis (tangent vector t ) to adapt to the normal and binormal vectors ( n and b ) of the Frenet frame of pitch diameter helix.…”

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confidence: 99%

Boundary-Adapted Numerical Modeling of Flow in a Hydrostatic Leadscrew

Feng

et al. 2021

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A new method is presented to model and predict the flow fields of the hydrostatic leadscrews with greater accuracy. It is different from those available methods, in which various bearings are assumed to be equivalent to the screw-nut pair within a pitch by various means. In this new method, a helical coordinate system adapting to the boundaries of the flow fields is constructed, which makes the screw-nut meshing clearance calculated more accurate. Based on the finite difference method (FDM), the meshing clearance is discretized into a number of flow fields, which are created by numerous couples of parallel-plate elements moving relatively along the helicoid. The numerical model is solved in MATLAB, and the analyses about the pressure fields demonstrate its favorable performances in reflecting the actual flow fields. Furthermore, the simulation results are compared with the experimental values, confirming the feasibility of the proposed method.

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