Abstract

We have compared high-resolution coherent anti-Stokes Raman spectroscopy measurements of the Q(1) transition of H₂ with theoretical line shapes incorporating both Doppler broadening and motional narrowing. Least-squares fits varying the motional narrowing coefficient for both the hard- and soft-collision model yielded line shapes that agreed well with observed spectra at 295 K for pressures between 50 and 3050 Torr. However, the narrowing coefficient for the hard-collision model was pressure dependent, whereas the narrowing coefficient for the soft-collision model was independent of pressure and yielded an optical diffusion coefficient that agreed with previously measured values.

© 1987 Optical Society of America

Coherent anti-Stokes Raman spectroscopy investigation of the anisotropic vibrational transitions of hydrogen

R. L. Farrow and G. O. Sitz
J. Opt. Soc. Am. B 6(5) 865-870 (1989)

Saturation effects in coherent anti-Stokes Raman scattering spectroscopy of hydrogen

Robert P. Lucht and Roger L. Farrow
J. Opt. Soc. Am. B 6(12) 2313-2325 (1989)

Calculation of collisionally narrowed coherent anti-Stokes Raman spectroscopy spectra

M. L. Koszykowski, R. L. Farrow, and R. E. Palmer
Opt. Lett. 10(10) 478-480 (1985)

High-resolution measurements of saturated coherent anti-Stokes Raman spectroscopy line shapes

R. L. Farrow and R. P. Lucht
Opt. Lett. 11(6) 374-376 (1986)

Effect of pump-laser linewidth on noise in single-pulse coherent anti-Stokes Raman spectroscopy temperature measurements

S. A. Barton and J. M. Garneau
Opt. Lett. 12(7) 486-488 (1987)