1Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 2Graduate University of Chinese Academy of Sciences, Beijing 100049
The Improved Power of the Central Lobe in the Beam Combination and High Power Output
1Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 2Graduate University of Chinese Academy of Sciences, Beijing 100049
摘要In order to increase the power fraction of the central lobe in the coherent beam combination of lasers in an array, the effects of the distance factor of near-field distribution on far-field interference patterns are calculated and demonstrated experimentally. An improved beam array of interwoven distribution is demonstrated to enable the power in the central lobe to reach 41%. An optimized mirror array is carefully designed to obtain a high duty ratio, which is up to 53.3% at a high power level. By using these optimized methods and designs, the passive phase locking of eight Yb-doped fiber amplifiers with ring cavities are obtained, and a pleasing interference pattern with 87% visibility is observed. The maximum coherent output power of the system is up to 1066 W.
Abstract：In order to increase the power fraction of the central lobe in the coherent beam combination of lasers in an array, the effects of the distance factor of near-field distribution on far-field interference patterns are calculated and demonstrated experimentally. An improved beam array of interwoven distribution is demonstrated to enable the power in the central lobe to reach 41%. An optimized mirror array is carefully designed to obtain a high duty ratio, which is up to 53.3% at a high power level. By using these optimized methods and designs, the passive phase locking of eight Yb-doped fiber amplifiers with ring cavities are obtained, and a pleasing interference pattern with 87% visibility is observed. The maximum coherent output power of the system is up to 1066 W.
LIU Hou-Kang,XUE Yu-Hao,LI Zhen,HE Bing**,ZHOU Jun**,DING Ya-Qian,JIAO Meng-Li,LIU Chi,QI Yun-Feng,WEI Yun-Rong,DONG Jing-Xing,LOU Qi-Hong. The Improved Power of the Central Lobe in the Beam Combination and High Power Output[J]. 中国物理快报, 2012, 29(4): 44204-044204.
LIU Hou-Kang,XUE Yu-Hao,LI Zhen,HE Bing**,ZHOU Jun**,DING Ya-Qian,JIAO Meng-Li,LIU Chi,QI Yun-Feng,WEI Yun-Rong,DONG Jing-Xing,LOU Qi-Hong. The Improved Power of the Central Lobe in the Beam Combination and High Power Output. Chin. Phys. Lett., 2012, 29(4): 44204-044204.
[1] Jeong Y, Sahu J K, Payne D N and Nilsson J 2004 Opt. Express 12 6088[2] Jeong Y, Boyland A J, Sahu J K, Chung S, Nilsson J and Payne D N 2009 J. Opt. Soc. Korea 13 416[3] Richardson D J, Nilsspm J and Clarkson W A 2010 J. Opt. Soc. Am. B 27 B63[4] He B, Zhou J, Lou Q H, Xue Y H, Li Z, Wang W, Dong J X, Wei Y R and Chen W B 2010 Microwave Opt. Technol. Lett. 52 1668[5] O'Connor M, Gapontsev V, Fomin V, Abramov M and Ferin A 2009 CLEO paper CThA3[6] Dawson J W, Messerly M J, Beach R J, Shverdin M Y, Stappaerts E A, Sridharan A K, Pax P H, Heebner J E, Siders C W and Barty C P J 2008 Opt. Express 16 13240[7] Wirth C, Schmidt O, Tsybin I, Schreiber T, Eberhardt R, Limpert J, Tünnermann A, Ludewigt K, Gowin M, Have E T and Jung M 2011 Opt. Lett. 36 3118[8] Anderegg J, Brosnan S J, Cheung E, Epp P, Hammons D, Komine H, Weber E and Wickham M 2006 Proc. SPIE 6102 61020U[9] Shay T M, Baker J T, Sanchez A D, Robin C A, Vergien C L, Zeringue C, Gallant D, Chunte L A, Pulford B, Bronder T J and Lucero A 2009 Proc. SPIE 7195 71951M[10] Ma Y X, Wang X L, Leng J Y, Xiao H, Dong X L, Zhu J J, Du W B, Zhou P, Xu X J, Si L, Liu Z J and Zhao Y J 2011 Opt. Lett. 36 951[11] Zhou P, Liu Z J, Wang X L, Ma Y X, Ma H T and Xu X J 2009 Appl. Phys. Lett. 94 231106[12] Wang B S, Mies E, Minden M and Sanchez A 2009 Opt. Lett. 34 863[13] Bochove E J, Cheo P K and King G G 2003 Opt. Lett. 28 1200[14] Corcoran C J and Durville F 2005 Appl. Phys. Lett. 86 201118[15] He B, Lou Q H, Zhou J, Dong J X, Wei Y R, Xue D, Qi Y F, Su Z P, Li L B and Zhang F P Opt. Express 14 2721[16] Lhermite J, Desfarges Berthelemot A, Kermene V and Barthelemy A 2007 Opt. Lett. 32 1842[17] Wang W, Lou Q H, He B, Zhou J, Li Z, Xue Yuhao and Liu X 2010 Chin. Opt. Lett. 8 490[18] Xue Y H, He B, Zhou J, Li Z, Fan Y Y, Qi Y F, Liu C, Yuan Z J, Zhang H B and Lou Q H 2011 Chin. Phys. Lett. 28 054212
2012, Vol. 29 
