Abstract
We analyze the Gaussian temporal envelope of pulses with a duration of 20fs and a carrier wavelength of 810nm at the paraxial focal plane of an achromatic doublet lens. The incident pulse beam is well-collimated and we use the Seidel aberration theory for thin lenses. In a set of cemented thin lenses with the stop at the lens, there is only spherical aberration, coma, astigmatism and field curvature. The distortion aberration introduced by the lens is zero. We analyze the effect of these aberrations in the focusing of ultrashort pulses for homogenous illumination.
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