摘要
时域有限差分(FDTD)计算方法,已经被应用在解由飞秒脉冲激光器激励的THz电磁场辐射的Maxwell方程中,文中介绍了一种德拜模型,此德拜模型方法能准确地在一个较宽的频率带上,描述许多类型的生物组织。通过此模型,分析了THz脉冲通过色散介质时的传播情况。并经过对比说明THz成像(TPI)在物品检测,癌症判断以及其他应用的可能性。
The finite-difference time-domain （FDTD） calculation method has been adopted to solve Maxwell＇s equation for terahertz（THz） electromagnetic radiation from photoconductive materials pumped by femtosecond laser pulses. This paper develops a Debye model which can exactly describe various creatures on a wide frequency band. The propagation of a THz pulse in dispersive media is discussed by this model. Comparisons show the possibility of Terahertz Pulsed Imaging （TPI） in the detection of objects, diagnosis of cancer and other applications.
出处
《电子科技》
2009年第5期81-83,共3页
Electronic Science and Technology
