All-fiber Cylindrical Vector Beam Laser Based on Ring-core Yb-doped Fiber
2019
We propose and demonstrate an all-fiber laser generating cylindrical vector beams efficiently using a home-made ring-core Yb-doped fiber. In this fiber laser, annular doping and ring-type beam pump are realized simultaneously, which are beneficial for remarkably improving the efficiency of high-order mode. Thus this laser oscillates in high-order $\mathrm{LP}_{11}$ mode stably with a high slope efficiency of 54.3%.
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