Calculation of collisionally narrowed coherent anti-Stokes Raman spectroscopy spectra
- 1 October 1985
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 10 (10) , 478-480
- https://doi.org/10.1364/ol.10.000478
Abstract
High-resolution coherent anti-Stokes Raman spectroscopy spectra of the N2 Q branch at 294 K have been obtained at 1, 5, and 10 atm. Even at 1-atm pressure, disagreements with spectra calculated using the isolated line approximation were observed, indicating the importance of collisional narrowing effects in describing these spectra. A method of using the full G-matrix approach for the calculation of these spectra that is both exact and computationally efficient (requiring only one matrix diagonalization and inversion per spectrum) is discussed. Excellent agreement with experimental data is obtained using this method and a simple exponential gap model for the off-diagonal G-matrix elements.Keywords
This publication has 8 references indexed in Scilit:
- Line interference effects in the vibrational Q-branch spectra of N2 and COChemical Physics Letters, 1983
- Comparison between CARS and corrected thermocouple temperature measurements in a diffusion flameApplied Optics, 1982
- Application of the rotational diffusion model to gaseous N2 CARS spectraOptics Communications, 1982
- Cars spectroscopyProgress in Quantum Electronics, 1981
- Pressure-induced narrowing of the cars spectrum of N2Optics Communications, 1980
- Mechanism of Rotational RelaxationThe Journal of Chemical Physics, 1972
- Intermolecular Potentials and Infrared SpectraThe Journal of Chemical Physics, 1971
- Line Shapes in Molecular SpectraThe Journal of Chemical Physics, 1968