Kanazawa Shinya, Kozawa Yuichi, Sato Shunichi
Opt Lett. 2014 May 15;39(10):2857-9. doi: 10.1364/OL.39.002857.
We demonstrated the amplification of a radially polarized beam by using an Yb-doped double-clad fiber. The output power of the amplified beam reached 21 W at pump power of 30 W. The generation of amplified spontaneous emission was suppressed by applying a seed beam with sufficient power. Although the intensity distribution of the seed beam was well maintained after the amplification, partial transformation of radial polarization to azimuthal polarization was observed.
我们通过使用掺镱双包层光纤展示了径向偏振光束的放大。在30瓦泵浦功率下，放大光束的输出功率达到了21瓦。通过施加具有足够功率的种子光束抑制了放大自发辐射的产生。尽管种子光束的强度分布在放大后得到了很好的保持，但观察到了径向偏振向角向偏振的部分转变。
