Yb-doped large mode area fibers with depressed clad and dopant confinement

被引：7
|
作者：
Roy, Vincent [1 ]
Pare, Claude [1 ]
Laperle, Pierre [1 ]
Desbiens, Louis [1 ]
Taillon, Yves [1 ]
机构：
[1] Inst Natl Opt, 2740 Einstein, Quebec City, PQ G1P 4S4, Canada
来源：
FIBER LASERS XIII: TECHNOLOGY, SYSTEMS, AND APPLICATIONS | 2016年 / 9728卷
关键词：
Fiber amplifier; Large mode area; Ytterbium; Depressed-clad; Dopant confinement; Beam quality; OPERATION; LASERS;
D O I：
10.1117/12.2212770
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Large mode area fibers with depressed-index cladding layer and confinement of rare-earth dopants can provide effective suppression of high-order modes. A polarization-maintaining Yb-doped double-clad fiber with 35/250 mu m core/clad diameter has been fabricated from conventional methods according to this design. The fiber which has an effective mode area close to 500 mu m(2) yields near diffraction-limited output with beam quality factor M-2 close to 1.1 when tested as a power amplifier with a coherent seed light source. Beam pointing measurements provide further evidence for near single-mode behavior as the pointing fluctuations are shown to be negligible once the fiber is coiled to a given diameter.
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收藏
页数：7
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