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Aming at the coherent superposition of laser pulse reflected from the cavity mirror in multi-pass amplification process, a physical model for describing the amplification of coherent superstition of the rising part and the falling part of the pulse in a gain medium is established. According to theoretical analysis, standing wave is formed by the coherent superposition of the rising part and falling part of the pulse. The inversion population density shows up the effect of hole-burning by the standing wave, and the gain and pulse shape are affected. Based on this physical model, three conditions, i.e., no superposition, coherent superposition, and incoherent superposition are compared. This study will provide the instructions for high power solid laser design.
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Keywords:
- multi-pass amplification /
- cavity mirror /
- coherent superposition /
- gain saturation
[1] Franzt L M, Nodvik J S 1963 J. Appl. Phys. 34 2346
[2] Shaw M, Williams W, House R, Haynam C 2004 Opt. Eng. 43 2885
[3] Strickland D, Mourou G 1985 Opt. Comm. 56 219
[4] Chuang Y H, Zheng L, Meyerhofer DD 1993 IEEE J. Quantum. Electron. 29 270
[5] Morice O 2003 Opt. Eng. 42 1530
[6] Xie S Y, Lu Y F, Ma Q L, Wang P Y, Shen Y, Zhong N 2010 Chin. Phys. B 19 064208
[7] Liu L Q, Su J Q, Luo B, Wang W Y, Jing F, Wei X F 2007 Acta Phys. Sin. 56 6749(in Chinese)[刘兰琴, 粟敬钦, 罗斌, 王文义, 景峰, 魏晓峰 2007 56 6749]
[8] Chu X L, Zhang B, Cai B W, Wei X F, Zhu Q H, Huang X J, Yuan X D, Zeng X M, Liu L Q, Wang X, Wang X D, Zhou K N, Guo Y 2005 Acta Phys. Sin. 54 4696(in Chinese)[楚小亮, 张彬, 蔡邦维, 魏晓峰, 朱启华, 黄小军, 袁晓东, 曾小明, 刘兰琴, 王逍, 王晓东, 周凯南, 郭仪 2003 强激光与粒子束 15 241]
[9] Liu L Q, Jing F, Peng Z T, Zhu Q H, Cheng X F, Jiang D B, Zhang Q Q, Liu H J 2003 High Power Laser and Particle Beams 15 241(in Chinese)[刘兰琴, 景峰, 彭志涛, 朱启华, 程晓峰, 蒋东镔, 张清泉, 刘红婕 2003 强激光与粒子束 15 241]
[10] Zhang B, L B D 1998 High Power Laser and Particle Beams 10 343(in Chinese)[张彬, 吕百达 1998 强激光与粒子束 10 343]
[11] Zhang Y, Liu L Q, Wang W Y, Xie X D, Zhu Q H 2013 Acta Phys. Sin. 62 064208(in Chinese)[张颖, 刘兰琴, 王文义, 谢旭东, 朱启华 2013 62 064208]
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[1] Franzt L M, Nodvik J S 1963 J. Appl. Phys. 34 2346
[2] Shaw M, Williams W, House R, Haynam C 2004 Opt. Eng. 43 2885
[3] Strickland D, Mourou G 1985 Opt. Comm. 56 219
[4] Chuang Y H, Zheng L, Meyerhofer DD 1993 IEEE J. Quantum. Electron. 29 270
[5] Morice O 2003 Opt. Eng. 42 1530
[6] Xie S Y, Lu Y F, Ma Q L, Wang P Y, Shen Y, Zhong N 2010 Chin. Phys. B 19 064208
[7] Liu L Q, Su J Q, Luo B, Wang W Y, Jing F, Wei X F 2007 Acta Phys. Sin. 56 6749(in Chinese)[刘兰琴, 粟敬钦, 罗斌, 王文义, 景峰, 魏晓峰 2007 56 6749]
[8] Chu X L, Zhang B, Cai B W, Wei X F, Zhu Q H, Huang X J, Yuan X D, Zeng X M, Liu L Q, Wang X, Wang X D, Zhou K N, Guo Y 2005 Acta Phys. Sin. 54 4696(in Chinese)[楚小亮, 张彬, 蔡邦维, 魏晓峰, 朱启华, 黄小军, 袁晓东, 曾小明, 刘兰琴, 王逍, 王晓东, 周凯南, 郭仪 2003 强激光与粒子束 15 241]
[9] Liu L Q, Jing F, Peng Z T, Zhu Q H, Cheng X F, Jiang D B, Zhang Q Q, Liu H J 2003 High Power Laser and Particle Beams 15 241(in Chinese)[刘兰琴, 景峰, 彭志涛, 朱启华, 程晓峰, 蒋东镔, 张清泉, 刘红婕 2003 强激光与粒子束 15 241]
[10] Zhang B, L B D 1998 High Power Laser and Particle Beams 10 343(in Chinese)[张彬, 吕百达 1998 强激光与粒子束 10 343]
[11] Zhang Y, Liu L Q, Wang W Y, Xie X D, Zhu Q H 2013 Acta Phys. Sin. 62 064208(in Chinese)[张颖, 刘兰琴, 王文义, 谢旭东, 朱启华 2013 62 064208]
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