Abstract
The experimental set-up consists of a heated sealed cell containing rubidium at 10−6 Torr pressure, in which two linearly-polarized overlapping beams copropagate. One of the beams, at frequency √1, from a Nd:YAG laser- pumped dye laser (5ns, 5Hz) is tuned over the 5s - nl two-photon transition with n = 14…19 and I = s,p and d. The second laser has a fixed frequency, √2, equal to 1.06μm. The directional forward output radiation is analyzed using a monocromator and appropriate filters to cut off the input beams. In the absence of the IR beam, we observe only the SH signal from s, p and d Rydberg states, which can be described by the third-order susceptibility, X(3), with a laser- induced static-electric field involved [1,2]. When the two beams are present, both SH and FWM signals can be observed by adjusting the monocromator to 300nm (SH frequency) or to 420nm (FWM frequency,√3 = 2 √1 - √2).
© 1996 Optical Society of America
PDF ArticleMore Like This
J. I. Dadap, X. F. Hu, M. H. Anderson, M. ter Beek, O. A. Aktsipetrov, N. M. Russell, J. G. Ekerdt, and M. C. Downer
FD.4 International Conference on Ultrafast Phenomena (UP) 1996
Jun Lin, Paul Sanchez, A. I. Ruberia, and Yifu Zhu
QThI4 Quantum Electronics and Laser Science Conference (CLEO:FS) 1996
J. Mihaychuk, J. Bloch, and H. M. van Driel
QFF1 Quantum Electronics and Laser Science Conference (CLEO:FS) 1996