Chubachi Tatsuya, Kozawa Yuichi, Sato Shunichi
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan.
Opt Lett. 2009 Mar 15;34(6):716-8. doi: 10.1364/ol.34.000716.
Amplification of a radially polarized laser beam is demonstrated by use of an Yb-doped double-clad fiber whose core cutoff wavelength for the LP11 mode is larger than the wavelength of the input beam. The beam power is amplified while maintaining the intensity and polarization distributions. The amplified spontaneous emission becomes negligible with increasing input power. The measured slope efficiency is 48%, and the output power is 1.1 W.
通过使用一种掺镱双包层光纤演示了径向偏振激光束的放大，该光纤的LP11模纤芯截止波长大于输入光束的波长。光束功率在保持强度和偏振分布的同时得到放大。随着输入功率的增加，放大的自发辐射变得可以忽略不计。测得的斜率效率为48%，输出功率为1.1W。
