论文标题
基于被动增益的3 kW被动增益金属化的金属化拉曼纤维放大器
3 kW passive-gain-enabled metalized Raman fiber amplifier based on passive gain
论文作者
论文摘要
拉曼纤维激光器（RFL）目前是各种应用的有前途和多功能的光源。到目前为止，高功率和亮度增强的RFL的操作随着快速发展吸收了巨大的兴趣。然而，高功率水平的稳定拉曼激光仍受到热效应的挑战。为了实现高功率RFL的更有效的热管理，我们首次证明了全启动的RFA，该RFA采用金属涂层的无源纤维启用高功率激光。通过使用铝制到分级指数（Grin）被动纤维的覆层，激光设备的热抽象更为足以支持低温操作。最大输出功率在1130 nm处达到3.083 kW，转化效率为78.7％。据我们所知，这是基于金属涂层的被动纤维的第一次拉曼激光一代。同时，它也是基于非线性增益的各种拉曼激光器领域获得的最高功率。
Raman fiber lasers (RFLs) are currently promising and versatile light sources for a variety of applications. So far, operations of high power and brightness-enhanced RFLs have absorbed enormous interests along with rapid progress. Nevertheless, the stable Raman lasing at high power levels remains challenged by the thermal effects. In an effort to realize more effective thermal management in high power RFLs, here we demonstrate, for the first time, an all-fiberized RFA employing metal-coated passive fiber enabling high power lasing. By employing aluminum to the cladding of graded-index (GRIN) passive fiber, the thermal abstraction of the laser devices is more sufficient to support low-temperature operation. The maximum output power reaches 3.083 kW at 1130 nm with a conversion efficiency of 78.7%. To the best of our knowledge, this is the first Raman laser generation based on metal-coated passive fiber. Meanwhile, it is also the highest power attained in the fields of all kinds of Raman lasers based on merely nonlinear gain.
