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Pulse Propagation

by Adam Wyatt

14 Jan 2007 (Updated 16 Jul 2007)

Code covered by the BSD License

Electromagnetic pulse propagation in free space in 2 spatial dimensions.

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File Information

Description

This script simulates the propagation of an electromagnetic pulse in time and 2 spatial dimensions. The resulting movie is a map of the beam profile in the transverse direction (i.e. perpendicular to propagation) as a function of time at a given longitudinal position (i.e. along propagation axis).

The result uses plane wave solutions to the wave equation, integrating over all possible directions and frequencies, computed using fast fourier transforms.

The simulations can be used to help visualize how space-time-coupling (STC) affects pulse propagation.

The idea can easily be expanded into 3 spatial dimensions (although the computational cost can become excessive).

MATLAB release

MATLAB 7.2 (R2006a)

Other requirements

No restrictions

Tags for This File
Everyone's Tags	chemistry, electromagnetic pulse, free space, physics, propagation(2)
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Comments and Ratings (4)
16 Jan 2007	Zhijun Wang	The following information will be produced with the program ??? Undefined function or method 'chng_rng' for input arguments of type 'double'. Error in ==> pulse_prop at 39 wmin = chng_rng(1, c); Min w value
19 Jan 2007	Adam Wyatt	Error from Zhijun Wang has been fixed now.
11 Jul 2007	Athanasios Makris	The program does not run as is on 7.1.0.246 (R14) There are several problems with the vector dimensions and operations among them. I have the feeling that these errors are note related to matlab version (after R14)...
18 Jul 2007	Adam Wyatt	I made a slight typo on the function, which I have now fixed. Program runs without any problems.

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Updates
16 Jan 2007	Sorry - I forgot to add a couple of my home-made functions. These have now been added to the start of the file - all should work now!
16 Jul 2007	Slight typo - the gauss function should be 2.^(.....) which I have now changed.

Tag Activity for this File
Tag	Applied By	Date/Time
chemistry	Adam Wyatt	22 Oct 2008 08:57:00
physics	Adam Wyatt	22 Oct 2008 08:57:00
electromagnetic pulse	Adam Wyatt	22 Oct 2008 08:57:00
free space	Adam Wyatt	22 Oct 2008 08:57:00
propagation	Adam Wyatt	22 Oct 2008 08:57:00
propagation	ask Skazik	21 May 2009 03:49:44

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