Coherent Anti-Stokes Raman Scattering of Molecular Gases
Final rept. 1 Mar 1975-30 Apr 1977
SYSTEMS RESEARCH LABS INC DAYTON OH RESEARCH APPLICATIONS DIV
Pagination or Media Count:
An experimental system based upon a single-mode ruby laser and a ruby-pumped dye laser has been developed to investigate coherent anti-Stokes Raman scattering CARS of molecular gases. The CARS system is capable of both broad- and narrow-band operation. Theoretical and experimental results obtained using this system for such gases as H2, HF, CO, N2, and CH4 are given. In particular, real-time CARS spectra of these gases have been obtained for rotational temperature estimations and the pressure dependence of integrated CARS intensity has been determined. In addition, the effect of media turbulence upon laser-beam propagation and upon the CARS process has been investigated. Results of CARS measurements on a laboratory rocket-engine plume are also presented.
- Atomic and Molecular Physics and Spectroscopy
- Combustion and Ignition