Abstract

Optoacoustic spectroscopy of the multiple-photon, two-frequency infrared-laser pumping of SF₆ shows that under certain conditions the absorption cross section can be increased by a factor of 40 or more over the single-frequency case. It is also shown that at a certain level of excitation, the cross section for absorption of the second laser frequency is independent of further excitation. Further, an enhancement was seen in the absorption at the ν₂ + ν₆ mode in SF₆ after excitation in the ν₃ mode.

© 1979 Optical Society of America

Photoionization study of multiphoton-excited SF₆ in a molecular beam

Aa. S. Sudbø, P. A. Schulz, D. J. Krajnovich, Y. T. Lee, and Y. R. Shen
Opt. Lett. 4(7) 219-221 (1979)

Optoacoustic measurements of energy absorption in CO₂ TEA-laser-excited SF₆ at 293 and 145 K

T. F. Deutsch
Opt. Lett. 1(1) 25-27 (1977)

Absorption of pulsed CO₂-laser radiation by SF₆ at 140 K

John L. Lyman, Robert G. Anderson, Robert A. Fisher, and B. J. Feldman
Opt. Lett. 3(6) 238-240 (1978)

Multiple-photon absorption of 16-μm radiation in UF₆ at 300 K

R. A. Lucht, J. S. Beardall, R. C. Kennedy, G. W. Sullivan, and J. P. Rink
Opt. Lett. 4(7) 216-218 (1979)

Collisional effects in the multiple infrared photon absorption in SF₆

G. P. Quigley
Opt. Lett. 3(3) 106-108 (1978)