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首页> 外文期刊>Optics Letters >Single-frequency laser oscillator with watts-level output power at 1.5 (mu)m by use of a twisted-mode technique
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Single-frequency laser oscillator with watts-level output power at 1.5 (mu)m by use of a twisted-mode technique

机译：采用扭曲模式技术的瓦特级输出功率为1.5μm的单频激光振荡器

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摘要

We report an all-fiber laser oscillator producing as much as 1.9 W of single-frequency direct output at 1.5 (mu)m. Spatial gain hole burning in the active fiber has been eliminated by use of a twisted-mode cavity approach. The two short pieces of a polarization-maintaining fiber that were spliced to the ends of the active fiber served as ultracompact quarter-wave plates. To our knowledge, the use of such a wave plate to manipulate the polarization state of light inside a fiber laser cavity is reported here for the first time. The laser output is linearly polarized and delivered through a polarization-maintaining fiber pigtail. We believe that the output power of our laser is the highest among all single-frequency fiber laser oscillators reported to date.
机译：我们报告了一种全光纤激光振荡器，它在1.5μm的波长下可产生高达1.9 W的单频直接输出。有源光纤中的空间增益孔燃烧已通过使用扭曲模式腔方法得以消除。拼接在有源光纤末端的两束保偏光纤的短片用作超紧凑四分之一波片。据我们所知，这里首次报道了使用这种波片来操纵光纤激光器腔内光的偏振状态。激光输出呈线性偏振状态，并通过保持偏振的光纤尾纤传输。我们相信，迄今为止，我们的激光器的输出功率是所有单频光纤激光振荡器中最高的。

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