Calculation of collisionally narrowed coherent anti-Stokes Raman spectroscopy spectra

Journal Article · Tue Oct 01 00:00:00 EDT 1985 · Opt. Lett.; (United States)

DOI:https://doi.org/10.1364/OL.10.000478· OSTI ID:5239702

Koszykowski, M L; Farrow, R L; Palmer, R E

High-resolution coherent anti-Stokes Raman spectroscopy spectra of the N/sub 2/ 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.

• Research Organization: Combustion Research Facility, Sandia National Laboratories, Livermore, California 94550
• OSTI ID: 5239702
• Journal Information: Opt. Lett.; (United States), Vol. 10:10
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
NITROGEN
RAMAN SPECTRA
CALCULATION METHODS
LINE NARROWING
MATRICES
MEDIUM PRESSURE
MEDIUM TEMPERATURE
MOLECULE COLLISIONS
RAMAN SPECTROSCOPY
COLLISIONS
ELEMENTS
LASER SPECTROSCOPY
NONMETALS
SPECTRA
SPECTROSCOPY
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory