  The prompt emission of short gamma ray bursts (sGRBs) with known redshifts
are analyzed using the model of multi-color blackbody which is interpreted as
the emission from a non-dissipative photosphere taking into account a power law
jet structure and the viewing geometry of the jet. We find nearly $69\%$ and
$26\%$ of the sample are consistent with multi-color blackbody and a pure
blackbody model, respectively. Using this interpretation, we infer that nearly
$57\% \, (18\%)$ of the sGRBs in our sample are observed within (or along the
edge of) the jet core. The sGRB jets are deduced to possess a narrow core with
a median $\theta_c \sim 3^{\circ}$. This suggests the rate of sGRBs that would
be viewed within the jet core to be $1.8 - 26 \, \rm Gpc^{-3} \, yr^{-1}$. The
power law index of the decreasing Lorentz factor profile of the jet structure
is deduced to be $1.3 - 2.2$. The intrinsic luminosity is found to range
between $10^{48} - 10^{53}\, \rm erg/s$. The average values of Lorentz factor
and nozzle radius of the sGRB jets are inferred to be $210\, (85)$ and
$10^{7.7} \, (10^{9.6}) \, \rm cm$ for the cases when the photosphere forms in
the coasting (accelerating) phase respectively. The viability of the inferred
values of the different parameters of the GRB outflow and viewing geometry
within this physical interpretation enhances the prospect of the photospheric
emission model to explain the observed GRB spectrum.
