期刊文献+

纳秒整形激光脉冲波形的高对比度诊断

High contrast temporal shape diagnostics for nanosecond laser reshaping pulse
下载PDF
导出
摘要 激光脉冲波形的精密诊断是大型激光装置运行控制和精密物理实验的前提,而动态范围的大小是衡量诊断系统的关键指标之一。为了满足高功率激光装置对纳秒级整形激光脉冲对比度控制及精密诊断的需求,采用双探测器与数字示波器四通道分组并行取样的诊断方法,通过将整形激光脉冲分解为不同的幅值区域并送入示波器的不同输入通道,每个通道采用不同的垂直灵敏度档位进行探测,最后利用共同的时基完成波形的对接重构。研究结果表明,采用的方法可以实现2 500:1的动态范围,在偏差为2%的测量精度内,可以实现对比度高达100:1的多台阶整形脉冲的全波形测量。 The ability of temporal pulse reshaping is an important content in high power laser facility operation and fusion ignition experiment. In order to verify reshaping effect, the diagnostic system was optimized by optical and electrical power splitting, the system detected laser pulse shapes with two high- speed vacuum biplanar photodiodes (VPD), coupled to a four-channels 8 GHz oscilloscope. The effective dynamic range of the diagnostic system for measurement of pulses with high-power contrast was increased by splitting the signal from every VPD evenly into two channels of the oscilloscope with different sensitivity setting, the detected pulse from the four channels was stitched back together to form the complete pulse. The result show that the detector and oscilloscope combination has a 10% to 90% rise time of 60 ps, the diagnostic reaches 2 500:1 dynamic range for contrast ratios up to 100:1 at an within 2% uncertainty.
出处 《红外与激光工程》 EI CSCD 北大核心 2016年第11期79-84,共6页 Infrared and Laser Engineering
基金 国家自然科学基金(61377102) 国防基础科研计划(B1520133010)
关键词 诊断 脉冲波形 示波器 动态范围 对比度 高功率激光 diagnostics temporal shape oscillograph dynamic range contrast high power laser
  • 引文网络
  • 相关文献

参考文献3

二级参考文献26

  • 1欧阳小平,张福领,张攀政,谢兴龙,朱健强.短脉冲激光的二阶自相关[J].中国激光,2009,36(3):742-745. 被引量:16
  • 2欧阳小平,竺庆春,朱宝强,马伟新.列阵透镜对能量测量影响的分析[J].中国激光,2005,32(8):1110-1112. 被引量:2
  • 3颜微子,孙力军,雒永太,熊红军.光纤延迟取样测量系统[J].半导体光电,2005,26(5):464-467. 被引量:3
  • 4Thomas S, Boyd B, Davis D T, et al. Temporal multiplexing for economical measurement of power versus time on NIF[C] //SP1E, 1997, 3047: 700-706.
  • 5Leclerc P, Allouche V. Temporal response diagnostic for the laser Megajoule[C]//SPIE, 1999, 3492: 843-850.
  • 6Akhmanov S A, Vysloukh V A, Chirkin A S. Optics of Femtosecond Laser Pulses[M]. New York: American Institute of Physics, 1992: 9-14.
  • 7Neumann E-G. Single-mode Fibers [M]. US: Springer- Verlag, 1988: 20-30.
  • 8Agrawal G P. Nonlinear Fiber Optics [M]. US: Academic Press, 1989: 15-20.
  • 9夏彦文,卢宗贵,唐军,等.高功率激光脉冲光纤耦合取样技术研究[J].计量学报,2009,30(6A):167-169.
  • 10Leclerc P, Allouche V. Temporal response diagnostic for the laser MegaJoule[C]//SPIE, 1999, 3492: 843-850.

共引文献9

;
使用帮助 返回顶部