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Femtosecond electron pulse compression by using the time focusing technique in ultrafast electron diffraction 期刊论文  OAI收割
chinese physics b, 2011, 卷号: 20, 期号: 11, 页码: 114102
作者:  Wen Wen-Long;  Lei Xiao-Hong;  Hu Xin;  Xu Xiang-Yan;  Wang Jun-Feng
收藏  |  浏览/下载：41/0  |  提交时间：2012/06/29
Analysis of a diffractive microlens using the finite-difference time-domain method (EI CONFERENCE) 会议论文  OAI收割
作者:  Liu Y.;  Liu H.;  Liu H.;  Liu H.;  Liu Y.
收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25
The finite-difference time-domain (FDTD) method is used as rigorous electromagnetic analysis model to calculate the field for a diffractive microlens (DML). The FDTD is used for the entire solution rather than using a near- to far-field propagation method to obtain the far-field energy distribution  thus  all the results are vector based. We derived a formula to calculate the magnitude of electric field  which is time dependent and can be used to graphically show the light wave propagation and focusing process through a DML. Both the comparison and the integral methods are presented to obtain wave amplitude in full solution space  and the distribution of light energy behind a DML is illustrated based on the wave amplitude. The formula of diffractive efficiency of the DML is derived from a time-averaged Ponyting vector  which can indicate the propagation direction of light energy. Application of these formulations in the analysis of a DML example demonstrates the high accuracy and efficiency of our method. 2010 Society of Photo-Optical Instrumentation Engineers.  
A time-dependent quasi-three-dimensional qef model of red sprites 期刊论文  iSwitch采集
Chinese journal of geophysics-chinese edition, 2005, 卷号: 48, 期号: 3, 页码: 480-486
作者:  Wu, ML;  Xu, JY
收藏  |  浏览/下载：24/0  |  提交时间：2019/05/10