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Definition: pulses with a temporal intensity profile which has a Gaussian shape
German: gaußförmige Pulse
Ultrashort pulses from mode-locked lasers, for example, often have a temporal shape (i.e., shape of the curve showing optical power versus time) which can be approximately described with a Gaussian function:
where τ is the full width at half-maximum (FWHM) pulse duration.
which means that the time–bandwidth product is ≈ 0.44.
Compared with a sech2-shaped pulse, a Gaussian pulse with the same width at half-maximum has somewhat weaker wings:
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