Abstract
Optical nutation at the Raman-active transition 6P 1/2−6P 3/2 of thallium atoms (ω R /2πc=7793 cm −1) under resonant Raman excitation by a biharmonic picosecond pulsed field, giving rise to substantial motion of the population, is detected. Optical nutation appears as an oscillatory behavior of the energy of the anti-Stokes scattering of probe pulses, which follow with a fixed delay, as a function of the product of the energies of the excitation pulses. As a result of the dynamic Stark effect, which decreases the frequency of the transition under study, resonance excitation conditions are satisfied for negative initial detunings of the Raman excitation frequency from resonance. The Raman scattering cross section for the transition under study is estimated by comparing the experimental data with the calculations.
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References
M. Bassini, F. Biraben, B. Gagnac, and C. Crynberg, Opt. Commun. 21, 263 (1977).
M. M. T. Loy, Phys. Rev. Lett. 36, 1454 (1976).
K. N. Drabovich, L. M. Kocharyan, and G. N. Slepchenko, Izv. Akad. Nauk SSSR, Ser. Fiz. 45, 1532 (1981).
L. A. Rahn, R. L. Farrow, M. L. Koszykowski, and P. L. Mattern, Phys. Rev. Lett. 45, 620 (1980).
M. Pealat, M. Lefebre, J.-P. Taran, and P. L. Kelley, Phys. Rev. A 38, 1948 (1988).
F. Sh. Ganikhanov, V. N. Kulyasov, I. G. Konovalov et al., Opt. Spektrosk. 70, 483 (1991) [Opt. Spectrosc. 70, 283 (1991)].
L. Allen and J. H. Eberly, Optical Resonance and Two-Level Atoms (Wiley, New York, 1975) [Russian translation, Mir, Moscow, 1978, p. 62].
V. I. Anikin, K. N. Drabovich, and A. N. Dubovik, Zh. Éksp. Teor. Fiz. 72, 1727 (1977) [Sov. Phys. JETP 45, 906 (1977)].
V. S. Butylkin, A. E. Kaplan, Yu. G. Khronopulo, and E. I. Yakubovich, Resonant Interactions of Light with Matter [in Russian] (Nauka, Moscow, 1977, p. 24).
N. B. Delone and V. P. Krainov, Atoms in Strong Light Fields (Springer-Verlag, New York, 1985) [Russian original, Énergoatomizdat, Moscow, 1984, p. 51].
V. M. Akulin and N. V. Karlov, Intense Resonant Interactions in Quantum Electronics (Springer-Verlag, New York, 1991) [Russian original, Nauka, Moscow, 1987, p. 210].
S. A. Akhmanov and N. I. Koroteev, Methods of Nonlinear Optics in Light Scattering Spectroscopy [in Russian] (Nauka, Moscow, 1981, p. 225).
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Pis’ma Zh. Éksp. Teor. Fiz. 70, No. 1, 7–12 (10 July 1999)