KMS Shanghai Institute of Optics and Fine Mechanics, CAS
| Mode suppression employing periodical large-small-core (PLSC) filter in strongly pumped large mode area fiber amplifier | |
| Zhao, Xiang; Bai, Gang; Zheng, Ye; Chen, Xiaolong; Yang, Yifeng; Liu, Kai; Zhao, Chun; Qi, Yunfeng; He, Bing; Zhou, Jun; Peng, Biao; Li, Xiaojun; dreamer_7@siom.ac.cn; junzhousd@siom.ac.cn | |
| 2017 | |
| Source Publication | J. Opt.
 |
| Volume | 19Issue:6 |
| Abstract | Mode instability (MI) has become one of the main restrictions for further power scaling of large mode area (LMA) fiber systems. A periodical large-small-core (PLSC) filter in a strongly pumped LMA fiber amplifier based on multimode interference and self-imaging effect is proposed to suppress high order modes and improve the beam quality. An investigation on the modeling of light propagation within this filter structure is presented. Transverse mode competition and individual transverse mode power distribution in a strongly pumped fiber amplifier are theoretically analyzed. By employing this PLSC mode filter in the 30/400 strongly pumped LMA fiber amplifier, the percentage of the fundamental mode rises from 27.8% (without filter) to 95.6%, and the percentage of the high order modes correspondingly reduces from 72.2% (without filter) to 4.4%. By the modal power decomposition, the optical field pattern in free space is established and the M-2 parameter of beam quality decreases dramatically from 2.24 to 1.12 (0 relative phase) and from 3.01 to 1.28 (pi/2 relative phase). This study provides a new method to achieve high beam quality in LMA fiber amplifiers and this filter would be extended to larger mode area fiber amplifiers. |
| Subtype | Article |
| Department | 空间 |
| DOI | 10.1088/2040-8986/aa698f |
| Funding Organization | National Key Research and Development Program [2016YFB0402201]; NSAF Foundation of National Natural Science Foundation of China [U1330134]; National Natural Science Foundation of China [61308024]; Natural Science Foundation of Shanghai [16ZR1440100, 16ZR1440200]; Key Technologies R&D Program of Jiangsu [BE2014001] ; National Key Research and Development Program [2016YFB0402201]; NSAF Foundation of National Natural Science Foundation of China [U1330134]; National Natural Science Foundation of China [61308024]; Natural Science Foundation of Shanghai [16ZR1440100, 16ZR1440200]; Key Technologies R&D Program of Jiangsu [BE2014001] ; National Key Research and Development Program [2016YFB0402201]; NSAF Foundation of National Natural Science Foundation of China [U1330134]; National Natural Science Foundation of China [61308024]; Natural Science Foundation of Shanghai [16ZR1440100, 16ZR1440200]; Key Technologies R&D Program of Jiangsu [BE2014001] ; National Key Research and Development Program [2016YFB0402201]; NSAF Foundation of National Natural Science Foundation of China [U1330134]; National Natural Science Foundation of China [61308024]; Natural Science Foundation of Shanghai [16ZR1440100, 16ZR1440200]; Key Technologies R&D Program of Jiangsu [BE2014001] |
| Indexed By | SCI |
| Funding Organization | National Key Research and Development Program [2016YFB0402201]; NSAF Foundation of National Natural Science Foundation of China [U1330134]; National Natural Science Foundation of China [61308024]; Natural Science Foundation of Shanghai [16ZR1440100, 16ZR1440200]; Key Technologies R&D Program of Jiangsu [BE2014001] ; National Key Research and Development Program [2016YFB0402201]; NSAF Foundation of National Natural Science Foundation of China [U1330134]; National Natural Science Foundation of China [61308024]; Natural Science Foundation of Shanghai [16ZR1440100, 16ZR1440200]; Key Technologies R&D Program of Jiangsu [BE2014001] ; National Key Research and Development Program [2016YFB0402201]; NSAF Foundation of National Natural Science Foundation of China [U1330134]; National Natural Science Foundation of China [61308024]; Natural Science Foundation of Shanghai [16ZR1440100, 16ZR1440200]; Key Technologies R&D Program of Jiangsu [BE2014001] ; National Key Research and Development Program [2016YFB0402201]; NSAF Foundation of National Natural Science Foundation of China [U1330134]; National Natural Science Foundation of China [61308024]; Natural Science Foundation of Shanghai [16ZR1440100, 16ZR1440200]; Key Technologies R&D Program of Jiangsu [BE2014001] |
| WOS ID | WOS:000400913500001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.siom.ac.cn/handle/181231/28399 |
| Collection | 空间激光信息技术研究中心 |
| Corresponding Author | dreamer_7@siom.ac.cn; junzhousd@siom.ac.cn |
| Affiliation | 中国科学院上海光学精密机械研究所 |
| Recommended Citation GB/T 7714 | Zhao, Xiang,Bai, Gang,Zheng, Ye,et al. Mode suppression employing periodical large-small-core (PLSC) filter in strongly pumped large mode area fiber amplifier[J]. J. Opt.,2017,19(6). |
| APA | Zhao, Xiang.,Bai, Gang.,Zheng, Ye.,Chen, Xiaolong.,Yang, Yifeng.,...&junzhousd@siom.ac.cn.(2017).Mode suppression employing periodical large-small-core (PLSC) filter in strongly pumped large mode area fiber amplifier.J. Opt.,19(6). |
| MLA | Zhao, Xiang,et al."Mode suppression employing periodical large-small-core (PLSC) filter in strongly pumped large mode area fiber amplifier".J. Opt. 19.6(2017). |
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