利用多模干涉装置(MMI)中的自复制改善多芯光纤激光器的发射特性

P. Glas, D. Fischer, M. Leitner, T. Sandrock, M. Wrage, T. Pertsch, A. P. Napartovich, N. N. Elkin, A. G. Sukharev, V. N. Troshchieva, D. V. Vysotsky
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引用次数: 2

摘要

只有摘要形式。开发用于连续波或脉冲应用的高功率二极管泵浦光纤激光器需要良好的泵浦到光纤的激光传输,高斜率效率和热问题的管理。对于高功率孤立飞秒光纤激光器,啁啾参数应尽量小,并选择合适的群速度色散值。决定在一个大直径的普通泵芯内使用大量掺杂单模光纤(61)(多芯光纤)。研究表明,使用由阶跃折射率多模光纤与多芯光纤耦合而成的多模干涉器件(MMI),可以通过场重构来影响非相关发射。
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Improvement of the emission characteristics of a multicore fiber laser using self reproduction in a multimode interference device (MMI)
Summary form only. The development of high power diode-pumped fiber lasers for cw or pulsed applications requires a good transfer of pump-to-fiber laser radiation, a high slope efficiency and management of thermal problems. For high power solitary femtosecond fiber lasers the chirp parameter should be small combined with a proper value of the group velocity dispersion. To have decided to use a multitude of doped monomode fibers (61) confined within a common pump core of large diameter (multicore fiber). We show that using a multimode interference device (MMI) being made up of a step index multimode fiber coupled to the multicore fiber the uncorrelated emission may be influenced via field reconstruction.
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