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钕玻璃的热致断裂及泵浦极限
引用本文:王友文,唐益群,陈列尊,游开明,陆世专,张登玉.钕玻璃的热致断裂及泵浦极限[J].强激光与粒子束,2011,23(5):0-0.
作者姓名:王友文  唐益群  陈列尊  游开明  陆世专  张登玉
作者单位:1.国防科学技术大学 理学院, 长沙 41 0073;
基金项目:湖南省教育厅科研计划项目(08C176); 衡阳师范学院科学基金项目(08B03)
摘    要:以激光介质的第一主应力为评判标准,依据Griffith微裂纹理论作为断裂临界应力,基于已报道的断裂实验数据和3维、瞬态的有限元计算,建立了预测一定泵浦参数下钕玻璃断裂可能性的Weibull统计模型,同时分析了影响介质泵浦极限的其它因素。结果表明:材料的抛光工艺决定了介质的断裂应力;对于短脉冲大能量方式工作的钕玻璃介质,基于美国20世纪90年代的抛光水平,1 Hz以下低重频时应优先考虑18 kWcm-2的泵浦饱和极限,10 Hz以上高重频时应优先考虑介质的断裂极限。

关 键 词:热致断裂    固体激光器    热管理    泵浦极限    钕玻璃
收稿时间:1900-01-01;

Characteristics of spatial modulation in nonlinear propagation of broad-band lasers stacked by chirped pulses
Wang Youwen,Tang Yiqun,Chen Liezun,You Kaiming,Lu Shizhuan,Zhang Dengyu.Characteristics of spatial modulation in nonlinear propagation of broad-band lasers stacked by chirped pulses[J].High Power Laser and Particle Beams,2011,23(5):0-0.
Authors:Wang Youwen  Tang Yiqun  Chen Liezun  You Kaiming  Lu Shizhuan  Zhang Dengyu
Institution:1.College of Science,National University of Defense Technology,Changsha 410073,China;2.Research Center of Laser Fusion,CAEP,P.O.Box 919-988,Mianyang 621900,China
Abstract:To identify the potential risks of spatial modulation of broad-band laser beams stacked by chirped pulses on the safety of optics,this paper numerically investigated the effect of temporal modulation on the generation and growth of spatial modulation during its nonlinear propagation.When there is no additional spatial modulation and the B integral is limited in the practical working range(usually less than 2.0 rad),no spatial modulation will be generated for both normal dispersion and anomalous dispersion;w...
Keywords:nonlinear propagation  chirped pulses  broad-band lasers  temporal-spatial modulation  
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