  We employ dual-probe 1-d fs/ps hybrid rotational coherent anti-Stokes Raman
spectroscopy to investigate simultaneous temperature, pressure, and O2/N2
measurements for gas-phase diagnostics. The dual-probe HRCARS technique allows
for simultaneous measurements from the time and frequency-domain. A novel
approach for measuring pressure, which offers high accuracy (<1%) and precision
(0.42%) is presented. The technique is first demonstrated in a chamber for a
range of pressures (1-1.5 bar). This technique shows an impressive capability
of resolving 1-d pressure gradients arising from a N2 jet impinging on a
surface, both in laminar and turbulent conditions. The technique is shown to be
capable of resolving single-shot pressure gradients (0.04 bar/mm) originating
from kinetic energy conversion to pressure, and resolves characteristic O2/N2
structures from laminar and turbulent mixing.
