Abstract
The stimulated Raman scattering (SRS) in H2 gas above the dissociation energy limit was recorded using a 266-nm UV laser. All of the observed Stokes and anti-Stokes SRS lines showed a normal behavior except the third Stokes SRS lines at 397.8 nm, which showed a substantial intensity enhancement of about a 36%-conversion efficiency of the pump energy. This enhancement in the SRS line is attributed to the seeding of the SRS line into the Balmer H-ε line at 397 nm in molecular hydrogen. To the best of our knowledge, there is no report of any work on enhanced stimulated Raman scattering in H2 by the seeding of the H-ε Balmer line into the SRS line and attaining a very high intensity at the third Stokes SRS lines at 397.8 nm. The cell pressure and the laser pulse energy dependence of these SRS lines substantiate our explanation.
| Original language | English |
|---|---|
| Pages (from-to) | 1332-1336 |
| Number of pages | 5 |
| Journal | Laser Physics |
| Volume | 18 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 2008 |
Bibliographical note
Funding Information:ACKNOWLEDGMENTS We gratefully acknowledge support from the Physics Department and Deanship of Scientific Research (project no. 2005/11) of King Fahd University of Petroleum and Minerals.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Instrumentation
- Condensed Matter Physics
- Industrial and Manufacturing Engineering