Narrow-linewidth all-solid large-mode-area photonic crystal fiber amplifier

被引:0
|
作者
Hauge, Jakob M. [1 ,2 ]
Papior, Sidsel R. [2 ]
Pedersen, Jens E. [2 ]
Christensen, Simon L. [1 ,2 ]
Bondu, Magalie [2 ]
Alkeskjold, Thomas T. [2 ]
Laegsgaard, Jesper [1 ]
机构
[1] Tech Univ Denmark, DTU Foton, DK-2800 Lyngby, Denmark
[2] NKT Photon AS, Blokken 84, DK-3460 Birkerod, Denmark
来源
FIBER LASERS XVI: TECHNOLOGY AND SYSTEMS | 2019年 / 10897卷
关键词
Photonic crystal fiber; fiber amplifier; narrow-linewidth; large-mode-area; all-solid fiber; high-power; FREQUENCY; LASER;
D O I
10.1117/12.2506246
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Large-mode-area (LMA) photonic crystal fiber (PCF) amplifiers are attractive for high-power amplification of single-mode (SM) narrow-linewidth light. Traditionally, LMA PCF designs include air holes but splicing and interfacing of fibers with air holes is complicated. Recently, this was addressed with the development of a LMA PCF amplifier fiber without air holes but with SM operation maintained. This all-solid fiber can be spliced with standard splicers and thus enables integration of PCFs into all-fiber monolithic laser systems. The new fiber, named DC-250/30-PM-Yb-FUD, is demonstrated in a free-space configuration for high-power amplification of 1064 nm light with a narrow linewidth of less than 20 kHz. A seed power of 380 mW is amplified to 40 W, corresponding to a single-stage gain of 20 dB, with an optical to optical efficiency of 69%. No indication of stimulated Brillouin scattering is observed, and the output is stable during frequency modulation of the seed laser.
引用
收藏
页数:5
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