Flat-top mode from a 50 μm-core Yb-doped leakage channel fiber

被引:25
|
作者
Kong, Fanting [1 ]
Gu, Guancheng [1 ]
Hawkins, Thomas W. [1 ]
Parsons, Joshua [1 ]
Jones, Maxwell [1 ]
Dunn, Christopher [1 ]
Kalichevsky-Dong, Monica T. [1 ]
Wei, Kanxian [2 ]
Samson, Bryce [2 ]
Dong, Liang [1 ]
机构
[1] Clemson Univ, ECE COMSET, Anderson, SC 29625 USA
[2] Nufern, East Granby, CT 06026 USA
来源
OPTICS EXPRESS | 2013年 / 21卷 / 26期
关键词
IMPACT;
D O I
10.1364/OE.21.032371
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We demonstrate for the first time a flat-top mode from a 50 mu m-core Yb-doped leakage channel fiber (LCF). The flat intensity distribution leads to an effective mode area of similar to 1880 mu m(2) in the straight fiber, an over 50% increase comparing to that of regular LCF with the same core diameter. The flat-top mode was achieved by using a uniform Yb-doped silica glass in the core center with an index of similar to 2x10(-4) lower than that of the silica background. The fiber was also tested in a laser configuration, demonstrating an optical-to-optical efficiency of similar to 77% at 1026 nm with respect to the pump at 975 nm. (C) 2013 Optical Society of America
引用
收藏
页码:32371 / 32376
页数:6
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