**Publications**(33)

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*T*is investigated systematically for light incident with linear polarization. First, one would not expect remarkable deviations from the stationary case. But also this simple system of an ideal aplanatic lens without any chromatic or monochromatic aberrations (of course only simple from the point of theory, but not at all from the point of practical realization) shows some remarkable results.

If the NA (in vacuum) tends to the limiting case of 1.0 the maximum value of |

*|*

**E**^{2}increases faster than expected from the scalar theory (Airy disc) with a maximum deviation of about 13%. The second effect really comes from very short pulses, i.e. very small values

*T*. Then, the value of |

*|*

**E**^{2}compared to the expected linear increase with 1/

*T*decreases slightly (only less than 2%), but systematically for all NAs.

Even more interesting is the dependence of the height of the first secondary maxima along the x-axis and y-axis on the NA and 1/

*T*. It can be seen that along both axes the first secondary maxima nearly vanish for very short pulses, i.e. large values 1/

*T*.

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