We show that coherent anti-Stokes Raman lineshapes do not follow known
spectral profiles if the time asymmetry of realistic laser pulses is taken into
account. Examples are given for nanosecond and picosecond laser pulses commonly
employed in frequency-resolved coherent anti-Stokes Raman scattering. More
remarkably, the analysis suggests an effect of line narrowing in comparison to
the customary approach, based primarily on the Voigt lineshape.Comment: 8 pages, 3 short sections, 4 figure
