Pressure dependence of degenerate four-wave mixing in SO2: Effect of the thermal gratings

Authors
Shi, SM Chen, DY Zheng, Q Person, M Qin, QZ
Citation
Sm. Shi et al., Pressure dependence of degenerate four-wave mixing in SO2: Effect of the thermal gratings, LASER CHEM, 18(4), 2000, pp. 167-176
Citations number
9
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
LASER CHEMISTRY
ISSN journal
02786273 → ACNP
Volume
18
Issue
4
Year of publication
2000
Pages
167 - 176
Database
ISI
SICI code
0278-6273(2000)18:4<167:PDODFM>2.0.ZU;2-T
Abstract
The degenerate four wave mixing (DFWM) spectrum of the A((1)A(2))<-- X((1)A (1)) and B(B-1(1))<-- X((1)A(1)) transitions of SO2 in the 299.5 - 305 nm r egion is presented. It has been found that the DFWM signal intensities are proportional to the cube of laser intensity and the square of SO2 pressure. The DFWM signal increases dramatically with the pressure of N-2 as a buffe r gas. The enhancement of the DFWM signal can be mainly attributed to the t hermal grating contribution.