2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/122316The connection between the time-dependent physical spectrum of light and the phase space overlap of Wigner functions is investigated for optical pulses. Time and frequency properties of optical pulses with chirp are analyzed using the phase space Wigner and Ambiguity distribution functions. It is shown that optical pulses can exhibit interesting phenomena, very much reminiscent of quantum mechanical interference, quantum entanglement of wave packets, and quantum sub-Planck structures of the time and frequency phase space.To appear in the Special Issue of Laser Physics (Vol. 15, No. 10). Minor changesOpticsQuantum Physicstext