Interference phenomena in two-photon transitions caused by laser-induced ac-Stark effect

Linskens, A.F.; Dam, NJ Nico; Reuß, J.; Sartakov, Boris G.

doi:10.1139/p94-163

Cited by 6 publications

(10 citation statements)

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“…In practice this means that both lasers are set to the 10P16 C 0 2 laser line center with a sum detuning of +348 MHz. The experimental setup has been described earlier in [13,20,21,23]. It consists of two high-power, single frequency C 0 2 waveguide lasers and a molecular-beam ap paratus that provides a large population of the 7 = 4 rotational state in the vibrational ground state of SF6.…”

Section: Methodsmentioning

confidence: 99%

Two-photon Rabi oscillations

et al. 1996

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Rabi oscillations reflect the existence of a coherent superposition of two molecular eigenstates during the interaction of molecules with a strong, resonant electromagnetic field. This phenomenon is not restricted to two-level systems. We demonstrate its occurrence in a three-level system where the radiation induces a two-photon absorption. The intermediate level is (slightly) detuned from resonance. For a theoretical descrip tion the dressed-state picture is adopted. The two-photon excitation is performed either by using one laser, yielding a one-color two-photon process, or by using two counterpropagating, spatially overlapping laser beams, yielding a two-color two-photon process. Rabi oscillations are produced by varying the fluence, i.e., by changing either the laser power or the molecule-laser interaction time. For the one-color case the two-photon transition dipole moment for an SF6 transition has been determined from the relation between laser fluence and number of Rabi oscillations.

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Section: Methodsmentioning

confidence: 99%

Two-photon Rabi oscillations

et al. 1996

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“…The symbols, as for all figures, denote the line center obtained from the FWHM. The straight (14,15).…”

Section: Up-up Spectral Featuresmentioning

confidence: 99%

“…The laser 2 detuning was chosen as indicated on the right y-axis in MHz also with respect to the 10P16 line center. The P(4) one-photon quadruplet ( ) is shaded in the trace for a laser 2 detuning of 160 MHz; from left to right, the A 1 , F 1 , E, and F 2 (14). For the dressing fields detuned to the red with respect symmetry components with an intensity ratio 1:3:4:3 are visible.…”

Section: Table 4 Observed Up-down Transitions and Resonances With Prementioning

confidence: 99%

Multiple-Photon Dynamics in Molecules: A New Approach to High Resolution Spectroscopy of Highly Excited Vibrational States

Linskens

Dam

Sartakov

et al. 1996

Journal of Molecular Spectroscopy

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“…6, using the dressed state picture for a molecular three level system with bare molecular states la,M"), Ih,M), and Ic,M') denoting the ground, intermediate, and final states (Fig. 1).…”

Section: Theorymentioning

confidence: 99%

Alignment and orientation of nonpolar molecules utilizing the laser-induced ac-Stark effect

Linskens

Dam

Reuß

et al. 1994

The Journal of Chemical Physics

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Progress on the motional Stark effect with laser-induced fluorescence diagnostic (invited) Rev. Sci. Instrum. 77, 10F311 (2006); 10.1063/1.2219432 Development of the motional Stark effect with laser-induced fluorescence diagnostic Rev. Sci. Instrum. 75, 3462 (2004); 10.1063/1.1779616 Influence of the ac Stark effect on multiphoton transitions in moleculesThe laser-induced ac-Stark effect influences the M sublevels of a molecule differently. This provides for a spectroscopical means of isolating individual M sublevels and thereby of producing aligned, or even oriented, excited molecules. We present an experimental study of this phenomenon in the .spherical top SF 6 using narrow bandwidth CO? lasers. One high power C0 2 1aser induces an IMI-dependent ac-Stark shift of the magnetic sublevels of the J=4 level of the vibrational ground state. A weak probe laser induces a two-photon transition starting from the same level and produces aligned, vibrationally excited molecules under appropriate experimental conditions. A theoretical description is provided in the dressed state picture. In principle, our triple-resonance technique is able to produce aligned or oriented molecules in a well-defined (vibrationally) excited state in any molecule possessing a similar three level system.

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Interference phenomena in two-photon transitions caused by laser-induced ac-Stark effect

Cited by 6 publications

References 0 publications

Two-photon Rabi oscillations

Two-photon Rabi oscillations

Multiple-Photon Dynamics in Molecules: A New Approach to High Resolution Spectroscopy of Highly Excited Vibrational States

Alignment and orientation of nonpolar molecules utilizing the laser-induced ac-Stark effect

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