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Simulation of wave propagation in dispersive media using FFT

 

作者: A. Albareda,   E. Toribio,   J. A. Gorri,   R. Pérez,  

 

期刊: American Journal of Physics  （AIP Available online 1990）
卷期: Volume 58, issue 9  

页码: 844-848

 

ISSN:0002-9505

 

年代: 1990

 

DOI:10.1119/1.16347

 

出版商: American Association of Physics Teachers

 

关键词: WAVE PROPAGATION;DISPERSIVE MEDIA;WAVE PACKETS;DISPERSION RELATIONS;FOURIER TRANSFORMATION;GROUP VELOCITY;PHASE VELOCITY

 

数据来源: AIP

 

摘要:

A method to show the temporal evolution of wavefunctions in linear lossless media is developed by using the inverse fast Fourier transform. Sequential images of the wave patterns are obtained by assuming simple phase functions for different dispersion relations, and for any given kind of spectra. The evolution of a wave packet shows the different group and phase velocities, and the deformation and spreading of the envelope in several dispersive media.

 

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