中文摘要：

利用傅立叶变换,推导出脉冲光束全反射时的Goos-H·nchen位移和相应的时间延迟（即反射时间）,这个结果和静态位理论得到的结果完全一致。对于反射时间为负的情况,如果从能流的角度分析,并不违背相对论中的因果律。

英文摘要：

Goos-Hanchen shift and the associated time delay （or reflection time） is obtained by using the Fourier trans- form, which accord well with the results obtained from the stationary phase theory. From the viewpoint of energy flux, the negative time delay does not violate causality of relativity.