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To reduce the influence of thermal lensing and attain the high power laser with high beam quality, a laser diode stack dual-end-direct-pumped Nd:YVO4 slab laser with negative branch confocal folded hybrid cavity has been developed. Its maximum output power is 416 W, optical conversion efficiency is 54.3%, and slope efficiency is 61.6%. When the output laser power is 370 W, M2 values in the unstable resonator direction and stable resonator direction are 3.9 and 4.7, respectively.
[1] Zhang T L, Yao J Q, Wang P, Zhu X Y, Cai Z Q, Zhang B G 2007 Chinese Journal of Laser 34 1194 (in Chinese) [张铁犁, 姚建铨, 王鹏, 朱雪玉, 蔡志强, 张百钢 2007 中国激光 34 1194]
[2] Zhou S H, Zhao H, Tang X J 2009 Chinese Journal of Lasers 36 1605 (in Chinese) [周寿恒, 赵鸿, 唐小军 2009 中国激光 36 1605]
[3] Zhang Z L, Liu Q, Yan P, Xia P, Gong M L 2013 Chin.Phys.B 22 054206
[4] Zou J, Zhao S Z, Yang K J, Li G Q 2006 Laser Technology 30 422 (in Chinese) [邹晶, 赵圣之, 杨克建, 李桂秋 2006 激光技术 30 422]
[5] Lupeia V, Pavela N, Tairab T 2002 Opt. Commu. 201 431
[6] Hou J Y, Shu S J, Wang Y F, Huang F, Jia W W 2010 Optoelectronic Technology 30 45 (in Chinese) [侯军燕, 舒仕江, 汪岳峰, 黄峰, 贾文武 2010 光电子技术 30 45]
[7] Zhao Z G, Dong Y T, Pan S Q, Liu C, Xiang Z, Chen J 2011 Chinese Journal of Lasers 38 0902001 (in Chinese) [赵智刚, 董延涛, 潘孙强, 刘崇, 项震, 陈军 2011 中国激光 38 0902001]
[8] Jia J X, Wang C X, Feng J X, Zhang K S 2012 ActaSinica Quantum Optica 18 97 (in Chinese) [贾建勋, 王春香, 冯晋霞, 张宽收 2012 量子光学学报 18 97]
[9] Du K M, Wu N L, Xu J D, Giesekus J, Loosen P, Poprawe R 1998 Opt. Lett. 23 370
[10] Peng S, Li D J, Zhang H L, Wang Y D, Du K M 2004 Opt. Commu. 229 349
[11] Zhu P, Li D J, Hu P X, Schell A, Shi P, Haas C R, Wu N L, Du K M 2008 Optics Letter 33 1930
[12] Xu L, Zhang H L, He J L, Yu X L, Cui L, Mao Y F, Sun X, Lin X, Xing J C, Xin J G 2012 Applied Optics 51 2012
[13] Liu H Q, Guo Z, Wang S Y, Lin L, Guo L C, Li B B, Cai D F 2011 Acta Phys. Sin. 60 014212 (in Chinese) [刘海强, 过振, 王石语, 林林, 郭龙成, 李兵斌, 蔡德芳 2011 60 014212]
[14] Siegman A E 1990 SPIE 1224 2
[15] Innocenzi M E, Yura H T, Fincher C L, Fields R A 1990 Appl. Phys. Lett. 56 1831
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[1] Zhang T L, Yao J Q, Wang P, Zhu X Y, Cai Z Q, Zhang B G 2007 Chinese Journal of Laser 34 1194 (in Chinese) [张铁犁, 姚建铨, 王鹏, 朱雪玉, 蔡志强, 张百钢 2007 中国激光 34 1194]
[2] Zhou S H, Zhao H, Tang X J 2009 Chinese Journal of Lasers 36 1605 (in Chinese) [周寿恒, 赵鸿, 唐小军 2009 中国激光 36 1605]
[3] Zhang Z L, Liu Q, Yan P, Xia P, Gong M L 2013 Chin.Phys.B 22 054206
[4] Zou J, Zhao S Z, Yang K J, Li G Q 2006 Laser Technology 30 422 (in Chinese) [邹晶, 赵圣之, 杨克建, 李桂秋 2006 激光技术 30 422]
[5] Lupeia V, Pavela N, Tairab T 2002 Opt. Commu. 201 431
[6] Hou J Y, Shu S J, Wang Y F, Huang F, Jia W W 2010 Optoelectronic Technology 30 45 (in Chinese) [侯军燕, 舒仕江, 汪岳峰, 黄峰, 贾文武 2010 光电子技术 30 45]
[7] Zhao Z G, Dong Y T, Pan S Q, Liu C, Xiang Z, Chen J 2011 Chinese Journal of Lasers 38 0902001 (in Chinese) [赵智刚, 董延涛, 潘孙强, 刘崇, 项震, 陈军 2011 中国激光 38 0902001]
[8] Jia J X, Wang C X, Feng J X, Zhang K S 2012 ActaSinica Quantum Optica 18 97 (in Chinese) [贾建勋, 王春香, 冯晋霞, 张宽收 2012 量子光学学报 18 97]
[9] Du K M, Wu N L, Xu J D, Giesekus J, Loosen P, Poprawe R 1998 Opt. Lett. 23 370
[10] Peng S, Li D J, Zhang H L, Wang Y D, Du K M 2004 Opt. Commu. 229 349
[11] Zhu P, Li D J, Hu P X, Schell A, Shi P, Haas C R, Wu N L, Du K M 2008 Optics Letter 33 1930
[12] Xu L, Zhang H L, He J L, Yu X L, Cui L, Mao Y F, Sun X, Lin X, Xing J C, Xin J G 2012 Applied Optics 51 2012
[13] Liu H Q, Guo Z, Wang S Y, Lin L, Guo L C, Li B B, Cai D F 2011 Acta Phys. Sin. 60 014212 (in Chinese) [刘海强, 过振, 王石语, 林林, 郭龙成, 李兵斌, 蔡德芳 2011 60 014212]
[14] Siegman A E 1990 SPIE 1224 2
[15] Innocenzi M E, Yura H T, Fincher C L, Fields R A 1990 Appl. Phys. Lett. 56 1831
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