  We study strong field molecular ionization using few- (four to ten) cycle
laser pulses. Employing a supercontinuum light source, we are able to tune the
optical laser wavelength (photon energy) over a range of about $\sim$200 nm
(500 meV). We measure the photoelectron spectrum for a series of different
molecules as a function of laser intensity, frequency, and bandwidth and
illustrate how the ionization dynamics vary with these parameters. We find that
multiphoton resonances and nonadiabatic dynamics (internal conversion) play an
important role and result in ionization to different ionic continua.
Interestingly, while nuclear dynamics can be "frozen" for sufficiently short
laser pulses, we find that resonances strongly influence the photoelectron
spectrum and final cationic state of the molecule regardless of pulse duration
-- even for pulses that are less than four cycles in duration.
