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10.1117/12.2284934ISTPDawson JW, 2008, OPT EXPRESS, V16, P13240, DOI 10.1364/OE.16.013240; Filippov V, 2010, OPT EXPRESS, V18, P12499, DOI 10.1364/OE.18.012499; Mochalov D., 2014, 2014 INT C LAS OPT; Gong ML, 2007, OPT EXPRESS, V15, P3236, DOI 10.1364/OE.15.003236; Kelson I, 1998, IEEE J QUANTUM ELECT, V34, P1570, DOI 10.1109/3.709573; Knight JC, 1996, OPT LETT, V21, P1547, DOI 10.1364/OL.21.001547; Koplow JP, 2000, OPT LETT, V25, P442, DOI 10.1364/OL.25.000442; Liao S, 2009, LASER PHYS, V19, P437, DOI 10.1134/S1054660X09030141; Limpert J, 2007, IEEE J SEL TOP QUANT, V13, P537, DOI 10.1109/JSTQE.2007.897182; Moreno I, 2005, OPT LETT, V30, P914, DOI 10.1364/OL.30.8.000914; Paschotta R, 1997, IEEE J QUANTUM ELECT, V33, P1049, DOI 10.1109/3.594865; Stutzki F, 2014, OPTICA, V1, P233, DOI 10.1364/OPTICA.1.000233; Tunnermann A, 2005, J PHYS B-AT MOL OPT, V38, pS681, DOI 10.1088/0953-4075/38/9/016; Wang Q, 2008, J LIGHTWAVE TECHNOL, V26, P512, DOI 10.1109/JLT.2007.915205; Wu Q, 2011, OPT EXPRESS, V19, P7937, DOI 10.1364/OE.19.007937; Zang ZG, 2010, IEEE PHOTONIC TECH L, V22, P721, DOI 10.1109/LPT.2010.2044994; Zhao X, 2017, J OPTICS, V1917Annual Conference of the Chinese-Society-for-Optical-Engineering (CSOE) on Applied Optics and Photonics China (AOPC) - Laser Components, Systems, and Applications639399510457Proc.SPIE2017Fiber optics amplifiers and oscillators; Lasers fiber; Lasers ytterbium; Multimode interferenceLASERS; POWERSESE141499145714572QTo suppress high order modes and improve the beam quality, an active self-imaging mode filter based on multimode interference and self-imaging effect is proposed in large mode area (LMA) fiber amplifier. With this filter structure, transverse mode competition and individual transverse mode power distributions in strongly pumped fiber amplifiers are theoretically demonstrated. Employing this mode selection technique in 30/400 LMA strongly pumped fiber amplifier, the percentage of the fundamental mode rises from 27.8% (without filter) to 96.3%. By the modal power decomposition, the M-2 parameter of beam quality decrease dramatically from 2.24 to 1.11 (0 relative phase) and from 3.01 to 1.24 (pi/2 relative phase). This study provides a new method to achieve single mode in LMA fiber amplifier and this filter would be extended to larger mode area fiber amplifier to improve the beam quality.AOPC 2017: LASER COMPONENTS, SYSTEMS, AND APPLICATIONSSuppression of high order modes employing active self-imaging mode filter in large mode area strongly pumped fiber amplifier会议论文EnglishZhao, Xiang; Bai, Gang; Zheng, Ye; Chen, Xiaolong; Yang, Yifeng; Qi, Yunfeng; He, Bing; Zhou, Jun42379104572Q WOS:000425186300097
外文题目: Suppression of high order modes employing active self-imaging mode filter in large mode area strongly pumped fiber amplifier
作者: Zhao, Xiang; Bai, Gang; Zheng, Ye; Chen, Xiaolong; Yang, Yifeng; Qi, Yunfeng; He, Bing; Zhou, Jun
刊名: Proc.SPIE
来源图书: AOPC 2017: LASER COMPONENTS, SYSTEMS, AND APPLICATIONS
年: 2017 卷: 10457 文章编号:104572Q
会议名称: Annual Conference of the Chinese-Society-for-Optical-Engineering (CSOE) on Applied Optics and Photonics China (AOPC) - Laser Components, Systems, and Applications
英文关键词:
Fiber optics amplifiers and oscillators; Lasers fiber; Lasers ytterbium; Multimode interference
LASERS; POWER
英文摘要:
文献类型: 会议论文
正文语种: English
收录类别: ISTP  
DOI: 10.1117/12.2284934
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