| 钕玻璃介质中强激光束传输特性的初步研究 |
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| 引用本文： | 景峰,张小民,朱启华,彭志涛,蒋东镔,程晓峰,陈波,陈远斌,刘华,刘兰琴,刘红婕,张清泉.钕玻璃介质中强激光束传输特性的初步研究[J].强激光与粒子束,2000,12(5):551-555. |
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| 作者姓名： | 景峰 张小民 朱启华 彭志涛 蒋东镔 程晓峰 陈波 陈远斌 刘华 刘兰琴 刘红婕 张清泉 |
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| 作者单位： | 中国工程物理研究院核物理与化学研究所，四川绵阳919信箱988分箱，621900 |
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| 基金项目： | 国家 8 63惯性约束聚变领域和中物院国防预研基金资助课题 |
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| 摘 要： | 由入射强激光束的强度或相位调制引起的小尺度纹波在经过非线性介质后，将产生强烈的自聚焦效应。在非线性相位延迟(B积分)超过一定值后，将严重影响光束的近场强度分布，甚至造成丝状破坏。数值模拟和实验研究了在一定强度调制下的光束经过钕玻璃介质发生自聚焦成丝效应的阈值条件，以及非线性传输的一般规律。可以通过模拟计算，给出高功率激光系统设计中的D-B判据。
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| 关 键 词： | 小尺度自聚焦效应 光传输 钕玻璃激光 |
| 收稿时间： | 1900-01-01; |
| 修稿时间： | 2000-05-22 |
Study on Characteristics of Intense Beam Propagation in Nd3+ Doped Glass Media |
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| JINGFeng,ZhANGXiao-min,ZHUQi-hua,PENGZhi-tao,JIANGDong-bin,CHENGXiao-feng,CHENBo,CHENYuan-bin,LIUHua,LIULan-qin,LIUHong-jie,ZHANGQing-quan.Study on Characteristics of Intense Beam Propagation in Nd3+ Doped Glass Media[J].High Power Laser and Particle Beams,2000,12(5):551-555. |
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| Authors: | JINGFeng ZhANGXiao-min ZHUQi-hua PENGZhi-tao JIANGDong-bin CHENGXiao-feng CHENBo CHENYuan-bin LIUHua LIULan-qin LIUHong-jie ZHANGQing-quan |
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| Institution: | Institute of Nuc |
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| Abstract: | Small-scale ripples in intense laser beams caused by intensity or phase modulations will grow fast due to self-focusing effect after passing through the nonlinear media. This lead to the change of the intensity distribution in the beam and can cause media damage by filamentations when the nonlinear phase retardation(B integral) reach to the restriction value which partly depends on the primary ripple level. The certain D B restriction of laser system was obtained by numerical simulations which were coincidence with experiments on beam propagation in a rod Nd3+:glass. |
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| Keywords: | small-scale self focusing effe ct beam propagation Nd- 3 :glass laser |
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