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Master oscillator power-amplifier (MOPA) configuration was widely used in high-power laser system. In order to find the optimal ratio of oscillator to amplifier, influences of this ratio on the near-field intensity distribution and the output power were studied. Fast Fourier transform method was used to calculate the near-field intensity distribution and the powers at the ratios of 1:4, 1:1 and 2:1. The simulation results indicated that when the total volume of the gain is constant, the output power of the oscillator increases with the ratio. The results also showed that the diffraction influence increases with the length of the amplifier. It was noted that the ultimate output power of the laser system was affected by the ratio of oscillator to amplifier intensity, when the laser was run at the same gain distribution, saturable intensity, amplification of the unstable oscillator, size of the whole laser and various losses of the cavity.
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Keywords:
- master oscillator power-Amplifier /
- resonator /
- near field intensity /
- beam quality
[1] Sang F T, Zhou D Z, Jin Y Q, Zhuang Q 2000 Chemical Laser (Beijing: Chemical Industry Press) p2 (in Chinese) [桑凤亭, 周大正, 金玉奇, 庄琦 2000 化学激光 (北京: 化学工业出版社) 第2页]
[2] Li G F, Duo L P, Jin Y Q, Yu H J, Wang J, Wang D Z, Sang F T 2012 Acta Phys. Sin. 61 104204 (in Chinese) [李国富, 多丽萍, 金玉奇, 于海军, 汪建, 王德真, 桑凤亭 2012 物理学报 61 104204]
[3] Li G F, Duo L P, Jin Y Q, Yu H J, Wang D Z, Sang F T 2010 Acta Phys. Sin. 59 4672 (in Chinese) [李国富, 多丽萍, 金玉奇, 于海军, 王德真, 桑凤亭 2010 物理学报 59 4672]
[4] John W, Jacqueline G G 2000 Technology Review Journal-Millennium IssueFall/Winter 69
[5] Wilson L E 1980 J. de Phys. C9 1
[6] Hua W H, Jiang Z F, Zhao Y J 1997 Chinese Journal of Lasers 24 221 (in Chinese) [华卫红, 姜宗福, 赵伊君 1997 中国激光 24 221]
[7] Wade R C 1993 SPIE 1868 334
[8] Jin D H, Liu W G, Chen X, Lu Q S, Zhao Y J 2012 High Power Laser and Particle Beams 24 1015 (in Chinese) [靳冬欢, 刘文广, 陈星, 陆启生, 赵伊君 2012 强激光与粒子束 24 1015]
[9] Sentman L H, Carroll D, Gilmore J, Theodoropoulos P, Waldo R 1987 AIAA, Fluid Dynamics, Plasma Dynamics, and Laser conference 19th Honolulu HI June 8-10, 1987, p10
[10] Chen X, Liu W G, Jiang Z F, Jin D H 2011 High Power Laser and Particle Beams 23 885 (in Chinese) [陈星, 刘文广, 姜宗福, 靳冬欢 2011 强激光与粒子束 23 885]
[11] Chen X, Liu W G, Jiang Z F 2010 Chin. Opt. Lett. 8 764
[12] Chen X, Liu W G, Jiang Z F, Jin D H 2012 Optik- Int. J. Light Electron Opt. (in press)
[13] Zhang X, Liu W G 2012 High Power Laser and Particle Beams 24 1033 (in Chinese) [张骁, 刘文广 2012 强激光与粒子束 24 1033]
[14] Fox A G, Li T 1961 Bell System Technical Journal 40 453
[15] Sziklas E A, Siegman A E 1975 Applied Optics 14 1874
[16] Cheng Y Y, Jiang C, Wang Y Q, Hu J, Li J R 2005 Chinese Journal of Computational Physics 22 449 (in Chinese) [程愿应, 江超, 王又青, 胡进, 李家熔 2005 计算物理 22 449]
[17] Zhang X, Liu W G 2011 Electro-Optic Technology Application 26 1 (in Chinese) [张骁, 刘文广 2011 光电技术应用 26 1]
[18] Niu Z F, Guo J Z 2011 Applied Laser 31 200 (in Chinese) [牛志峰, 郭建增 2011 应用激光 31 200]
[19] Jin D H, Liu W G, Chen X, Lu Q S, Zhao Y J 2012 Acta Phys. Sin. 61 064206 (in Chinese) [靳冬欢, 刘文广, 陈星, 陆启生, 赵伊君 2012 物理学报 61 064206]
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[1] Sang F T, Zhou D Z, Jin Y Q, Zhuang Q 2000 Chemical Laser (Beijing: Chemical Industry Press) p2 (in Chinese) [桑凤亭, 周大正, 金玉奇, 庄琦 2000 化学激光 (北京: 化学工业出版社) 第2页]
[2] Li G F, Duo L P, Jin Y Q, Yu H J, Wang J, Wang D Z, Sang F T 2012 Acta Phys. Sin. 61 104204 (in Chinese) [李国富, 多丽萍, 金玉奇, 于海军, 汪建, 王德真, 桑凤亭 2012 物理学报 61 104204]
[3] Li G F, Duo L P, Jin Y Q, Yu H J, Wang D Z, Sang F T 2010 Acta Phys. Sin. 59 4672 (in Chinese) [李国富, 多丽萍, 金玉奇, 于海军, 王德真, 桑凤亭 2010 物理学报 59 4672]
[4] John W, Jacqueline G G 2000 Technology Review Journal-Millennium IssueFall/Winter 69
[5] Wilson L E 1980 J. de Phys. C9 1
[6] Hua W H, Jiang Z F, Zhao Y J 1997 Chinese Journal of Lasers 24 221 (in Chinese) [华卫红, 姜宗福, 赵伊君 1997 中国激光 24 221]
[7] Wade R C 1993 SPIE 1868 334
[8] Jin D H, Liu W G, Chen X, Lu Q S, Zhao Y J 2012 High Power Laser and Particle Beams 24 1015 (in Chinese) [靳冬欢, 刘文广, 陈星, 陆启生, 赵伊君 2012 强激光与粒子束 24 1015]
[9] Sentman L H, Carroll D, Gilmore J, Theodoropoulos P, Waldo R 1987 AIAA, Fluid Dynamics, Plasma Dynamics, and Laser conference 19th Honolulu HI June 8-10, 1987, p10
[10] Chen X, Liu W G, Jiang Z F, Jin D H 2011 High Power Laser and Particle Beams 23 885 (in Chinese) [陈星, 刘文广, 姜宗福, 靳冬欢 2011 强激光与粒子束 23 885]
[11] Chen X, Liu W G, Jiang Z F 2010 Chin. Opt. Lett. 8 764
[12] Chen X, Liu W G, Jiang Z F, Jin D H 2012 Optik- Int. J. Light Electron Opt. (in press)
[13] Zhang X, Liu W G 2012 High Power Laser and Particle Beams 24 1033 (in Chinese) [张骁, 刘文广 2012 强激光与粒子束 24 1033]
[14] Fox A G, Li T 1961 Bell System Technical Journal 40 453
[15] Sziklas E A, Siegman A E 1975 Applied Optics 14 1874
[16] Cheng Y Y, Jiang C, Wang Y Q, Hu J, Li J R 2005 Chinese Journal of Computational Physics 22 449 (in Chinese) [程愿应, 江超, 王又青, 胡进, 李家熔 2005 计算物理 22 449]
[17] Zhang X, Liu W G 2011 Electro-Optic Technology Application 26 1 (in Chinese) [张骁, 刘文广 2011 光电技术应用 26 1]
[18] Niu Z F, Guo J Z 2011 Applied Laser 31 200 (in Chinese) [牛志峰, 郭建增 2011 应用激光 31 200]
[19] Jin D H, Liu W G, Chen X, Lu Q S, Zhao Y J 2012 Acta Phys. Sin. 61 064206 (in Chinese) [靳冬欢, 刘文广, 陈星, 陆启生, 赵伊君 2012 物理学报 61 064206]
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