  Considering the shortage of comparative studies on pulse temporal
characteristics between single-peaked short gamma-ray bursts (sGRBs) and
double-peaked sGRBs, we examine the pulse properties of a sample of 100 BATSE
sGRBs using the BATSE Time-Tagged Event (TTE) data with a 5-ms resolution. 243
individual pulses of the single-peaked, double-peaked and triple-peaked sGRBs
are fitted to get their statistical properties such as the pulse asymmetry,
amplitude, peak time, and pulse width, etc. For the double-peaked sGRBs,
according to the overlapping ratio between two adjacent peaks, we first define
two kinds of double-peaked sGRBs as M-loose and M-tight types and find that
most of the first pulses are similar to the single-peaked ones. We study the
dependence of the Full Width at Half Maximum (FWHM) on the photon energy among
different energy bands. Interestingly, it is found that a power-law relation
with an index of -0.4 does exist between the FWHM and the photon energy for the
single- and double-peaked sGRBs. More interestingly, we notice that the
power-law relation with a positive index also exist for several special short
bursts. In view of the three typical timescales of pulses, namely the angular
spreading timescale, the dynamic timescale, and the cooling timescale, we
propose that the diverse power-law indexes together with the profile evolution
of GRB pulse can be used as an effective probe to diagnose the structure and
evolution of the relativistically jetted outflows.
