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The angle-polished side-pump coupler is fabricated by fused splicing angle-polished multimode fibers and 20/400 μm double-clad Yb-doped large mode area fiber together. The coupling efficiency of side-pumped coupler for 975 nm pumping light can reach up to 97%, and the leakage ratio of 1080 nm signal light is less than 2%. We analyze the performance of a single side-pumped coupler and also the influence of the distribution of cascade stage couplers on the efficiency of fiber amplifier. Using self-developed side-pumped couplers, we build a distributed side-pumped, ytterbium-doped double-clad all-fiber master oscillator amplifier, and an continuous and single mode laser of 1080 nm wavelength with a 303 W maximum output power is obtained. Finally, increasing the number of the side couplers to improve pump power, the output power of the amplifier becomes higher.
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Keywords:
- fiber amplifier /
- angle-polished side-pumped couplers /
- distributed side-pump /
- leakage ratio of signal light
[1] Jeong Y, Sahu J K, Payne D N, Nilsson J 2004 Opt. Express 12 6088
[2] Limpert J, Roser F, Klingebiel S, Schreiber T, Wirth C, Peschel T, Eberhardt R, Tunnermann A 2007 IEEE J. Sel. Top. Quant. Electron. 13 537
[3] Gapontsev V, Gapontsev D, Platonov N, Shkurikhin O, Fomin V, Mashkin A, Abramov M, Ferin S 2005 2 kW CW Ytterbium Fiber Laser with Record Diffraction-limited Brightness (IEEE: Conference on Lasers and Electro-Optics Europe) p508
[4] Duan K L, Zhao B Y, Zhao W, Wang Q S, Zhou L 2009 Chin. J. Lasers 12 3219 (in Chinese) [段开椋, 赵保银, 赵卫, 王屹山, 周良 2009 中国激光 12 3219]
[5] Yang W Q, Hou J, Song R, Liu Z J 2011 Acta Phys. Sin. 60 084210 (in Chinese) [杨未强, 侯静, 宋锐, 刘泽金 2011 60 084210]
[6] Zhu J J, Du W B, Zhou P, Xu X J, Liu Z J 2012 Acta Phys. Sin 61 064209 (in Chinese) [朱家健, 杜文博, 周朴, 许晓军, 刘泽金 2012 61 064209]
[7] Larsen J J, Vienne G 2004 Opt. Lett. 29 436
[8] Weber T, Lthy W, Weber H P 1996 Appl. Phys. B 63 131
[9] Ripin D J, Goldberg L 1995 Electron. Lett. 31 2204
[10] Wang D Z, Wang Y G, Liu S P, Ma X Y 2009 Acta Opt. Sin. 29 974 (in Chinese) [王大拯, 王勇刚, 刘素平, 马骁宇 2009 光学学报 29 974]
[11] Moore S W, Koplow J P, Hansen A, Kliner D A V, Wien G 2008 Conference on Quantum Electronics and Laser Science San Jose, USA, May 4-9, 2008 p1
[12] Zhang F, Wang C C, Ning T G, Liu C, Geng R, Lu Y C 2009 Opt. Commun. 282 3325
[13] Zhang F, Wang C C, Ning T G, Liu C, Geng R, Lu Y C 2010 J. Opt. 12 015501
[14] Jauregui C, Böhme S, Wenetiadis G, Limpert J, Tnnermann A 2010 Proc. SPIE 7580 75801E
[15] Ou P, Yan P, Gong M L, Wei W L 2004 Chin. Opt. Lett. 2 285
[16] Ou P, Yan P, Gong M L, Zhang C X 2008 Laser Technol. 32 8 (in Chinese) [欧攀, 闫平, 巩马理, 张春熹 2008 激光技术 32 8]
[17] Xiao Q, Yan P, Yin S, Hao J, Gong M L 2011 Laser Phys. Lett. 8 125
[18] Yan P, Gong M L, Li C, Ou P, Xu A A 2005 Opt. Express 13 2699
[19] Ou P, Yan P, Gong M L, Wei W L, Yuan Y Y 2004 Opt. Commun. 239 421
[20] Glick Y, Sintov Y, Koplowitch T, Nafcha Y 2007 Conference on Lasers and Electro-Optics Baltimore, USA, May 6-11, 2007 p1
[21] Sintov Y, Glick Y, Koplowitch T, Katz O, Nafcha Y, Shamir Y, Lavi R 2007 Proc. SPIE 6552 65520R
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[1] Jeong Y, Sahu J K, Payne D N, Nilsson J 2004 Opt. Express 12 6088
[2] Limpert J, Roser F, Klingebiel S, Schreiber T, Wirth C, Peschel T, Eberhardt R, Tunnermann A 2007 IEEE J. Sel. Top. Quant. Electron. 13 537
[3] Gapontsev V, Gapontsev D, Platonov N, Shkurikhin O, Fomin V, Mashkin A, Abramov M, Ferin S 2005 2 kW CW Ytterbium Fiber Laser with Record Diffraction-limited Brightness (IEEE: Conference on Lasers and Electro-Optics Europe) p508
[4] Duan K L, Zhao B Y, Zhao W, Wang Q S, Zhou L 2009 Chin. J. Lasers 12 3219 (in Chinese) [段开椋, 赵保银, 赵卫, 王屹山, 周良 2009 中国激光 12 3219]
[5] Yang W Q, Hou J, Song R, Liu Z J 2011 Acta Phys. Sin. 60 084210 (in Chinese) [杨未强, 侯静, 宋锐, 刘泽金 2011 60 084210]
[6] Zhu J J, Du W B, Zhou P, Xu X J, Liu Z J 2012 Acta Phys. Sin 61 064209 (in Chinese) [朱家健, 杜文博, 周朴, 许晓军, 刘泽金 2012 61 064209]
[7] Larsen J J, Vienne G 2004 Opt. Lett. 29 436
[8] Weber T, Lthy W, Weber H P 1996 Appl. Phys. B 63 131
[9] Ripin D J, Goldberg L 1995 Electron. Lett. 31 2204
[10] Wang D Z, Wang Y G, Liu S P, Ma X Y 2009 Acta Opt. Sin. 29 974 (in Chinese) [王大拯, 王勇刚, 刘素平, 马骁宇 2009 光学学报 29 974]
[11] Moore S W, Koplow J P, Hansen A, Kliner D A V, Wien G 2008 Conference on Quantum Electronics and Laser Science San Jose, USA, May 4-9, 2008 p1
[12] Zhang F, Wang C C, Ning T G, Liu C, Geng R, Lu Y C 2009 Opt. Commun. 282 3325
[13] Zhang F, Wang C C, Ning T G, Liu C, Geng R, Lu Y C 2010 J. Opt. 12 015501
[14] Jauregui C, Böhme S, Wenetiadis G, Limpert J, Tnnermann A 2010 Proc. SPIE 7580 75801E
[15] Ou P, Yan P, Gong M L, Wei W L 2004 Chin. Opt. Lett. 2 285
[16] Ou P, Yan P, Gong M L, Zhang C X 2008 Laser Technol. 32 8 (in Chinese) [欧攀, 闫平, 巩马理, 张春熹 2008 激光技术 32 8]
[17] Xiao Q, Yan P, Yin S, Hao J, Gong M L 2011 Laser Phys. Lett. 8 125
[18] Yan P, Gong M L, Li C, Ou P, Xu A A 2005 Opt. Express 13 2699
[19] Ou P, Yan P, Gong M L, Wei W L, Yuan Y Y 2004 Opt. Commun. 239 421
[20] Glick Y, Sintov Y, Koplowitch T, Nafcha Y 2007 Conference on Lasers and Electro-Optics Baltimore, USA, May 6-11, 2007 p1
[21] Sintov Y, Glick Y, Koplowitch T, Katz O, Nafcha Y, Shamir Y, Lavi R 2007 Proc. SPIE 6552 65520R
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