Abstract

N₂ coherent anti-Stokes Raman spectroscopy (CARS) thermometry over a pressure range 1 to 50 atm has been studied. The CARS profile at high pressure and high temperature was recorded by using the ignition inside a running engine cylinder. The observed Q-branch profile was theoretically fitted by incorporating the collisional narrowing effect, serving for the temperature determination at various pressures. Because of the narrowing effect, the apparent band width showed little change with pressure above 5 atm in general. It has been suggested that the band width at ⅕ of the maximum height can be a useful measure of temperature, while the usual half-width turns out to be hardly practicable at high pressures.

H₂ chirped-probe-pulse femtosecond coherent anti-Stokes Raman scattering thermometry at high temperature and pressure

Ziqiao Chang, Rohan M. Gejji, Mingming Gu, and Robert P. Lucht
Opt. Express 32(8) 13701-13719 (2024)

Development of high-resolution N₂ coherent anti-Stokes Raman scattering for measuring pressure, temperature, and density in high-speed gas flows

Mark A. Woodmansee, Robert P. Lucht, and J. Craig Dutton
Appl. Opt. 39(33) 6243-6256 (2000)

Picosecond time-resolved pure-rotational coherent anti-Stokes Raman spectroscopy for N₂ thermometry

Thomas Seeger, Johannes Kiefer, Alfred Leipertz, Brian D. Patterson, Christopher J. Kliewer, and Thomas B. Settersten
Opt. Lett. 34(23) 3755-3757 (2009)

Time-resolved CO₂ thermometry for pressures as great as 5 MPa by use of pure rotational coherent anti-Stokes Raman scattering

Martin Schenk, Thomas Seeger, and Alfred Leipertz
Appl. Opt. 44(31) 6526-6536 (2005)

Single-pulse broadband rotational coherent anti-Stokes Raman-scattering thermometry of cold N₂ gas

D. V. Murphy and R. K. Chang
Opt. Lett. 6(5) 233-235 (1981)