Spread in Wavelength

Hello,
here is a poser for you how do you calculate the spread in wavelngth when a monochromatic light source of known wavlength is chopped by a shutter into a known pulse duration?
 

ZapperZ

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truth_hunter said:
Hello,
here is a poser for you how do you calculate the spread in wavelngth when a monochromatic light source of known wavlength is chopped by a shutter into a known pulse duration?
Take the signal in the time domain and do a fourier transform into the frequency domain. You'll obtain all the harmonics of that signal.

Zz.
 

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