Systems and methods for high-speed, spectroscopic, gas-phase thermometry

A coherent anti-Stokes Raman scattering spectography system, comprising:

• a burst-mode laser for producing a combined pump and probe beam having a wavelength of 532+/−1 nm, an energy of 50-200 mJ/pulse, and a pulse duration of 50-200 ps,
• an OPG/OPA for receiving a portion of the combined pump and probe beam and thereby producing a Stokes beam having a wavelength of 680+/−1 nm, an energy of 2.3-2.7 mJ/pulse, a bandwidth of 150-250 cm−1, and a pulse duration of 55-100 ps,
• optics for directing the combined pump and probe beam and the Stokes beam into a probe region within an environment, thereby expressing an optical output from the environment,
• a 0.25-m spectrometer having at least a 2,400 groove/mm grating for receiving the optical output and producing a spectra,
• an electron multiplying charge coupled device camera for recording the spectra, and
• electronics for converting the recorded spectra into temperature measurements.