| 主振荡功率放大装置中的放大自发辐射效应和能量提取效率 |
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| 引用本文： | 陈星,刘文广,姜宗福,靳冬欢.主振荡功率放大装置中的放大自发辐射效应和能量提取效率[J].强激光与粒子束,2011,23(4). |
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| 作者姓名： | 陈星 刘文广 姜宗福 靳冬欢 |
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| 作者单位： | 国防科学技术大学 光电科学与工程学院, 长沙 410073 |
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| 摘 要： | 建立了放大自发辐射(ASE)和相干激光能流耦合的模型，使用迭代算法，计算了长方体形状放大级中的ASE能流和相干激光能流的分布以及放大级出口0.5 m处的ASE分布,并讨论了入射光强、饱和光强对输出功率及能量提取效率的影响。对于增益区呈长方体、增益系数沿流场方向呈抛物线分布的放大级的计算结果表明：输入光的存在不仅会降低放大级中ASE光强的大小，而且将改变ASE的分布，使放大级中ASE能流的极大值向入口处移动；在饱和光强一定的情况下，输出功率和能量提取效率将随着入射功率的增大而增大；在入射光强一定的情况下，输出功率将随着饱和光强的增大而增大，而能量提取效率将随着饱和光强的增大而减小。
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| 关 键 词： | 放大自发辐射 放大器 输出功率 能量提取效率 |
| 收稿时间： | 1900-01-01; |
ASE effect and energy extraction efficiency in high-power DF laser systems with MOPA configuration |
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| Chen Xing,Liu Wenguang,Jiang Zongfu,Jin Donghuan.ASE effect and energy extraction efficiency in high-power DF laser systems with MOPA configuration[J].High Power Laser and Particle Beams,2011,23(4). |
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| Authors: | Chen Xing Liu Wenguang Jiang Zongfu Jin Donghuan |
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| Institution: | College of Opto-Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | The interaction of amplified spontaneous emission(ASE) flux and coherent laser flux as well as the effect of ASE in cuboid DF amplifiers are studied,by using a finite difference method and an iterative algorithm.The influence of input laser intensity and saturation light intensity on output power and energy extraction efficiency is discussed.The simulation of the amplifier whose gain zone is cuboid and gain coefficient is distributed as parabola indicate that the ASE intensity will decrease with the increas... |
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| Keywords: | amplified spontaneous emission amplifier output power energy extraction efficiency |
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