The ultra-short half-life gives zaleplon a unique advantage over other hypnotics because of its lack of next day residual effects on driving and other performance related skills.
Truly broadband sources (such as ultra-short pulse lasers and the tunable vibronic lasers) will not see the same rotation across the whole wavelength band.
An important ingredient for this scenario is magnetic braking, which allows efficient angular-momentum loss from the orbit and hence a strong shrinkage of the orbit to ultra-short periods.
