A photodissociation study of HgI2
The photodissociation of jet-cooled HgI2 has been studied in the 244–323 nm region using a tunable ultraviolet (UV) laser. Dispersed emission, action, and multiphoton ionization spectra have bee...
The photodissociation of jet-cooled HgI2 has been studied in the 244–323 nm region using a tunable ultraviolet (UV) laser. Dispersed emission, action, and multiphoton ionization spectra have bee...
Dynamic solvent effects on activated chemical reactions. I. Classical effects of reaction path curvature
In gas phase reactions, dynamical recrossings across a phase space dividing surface induced by nonlinear reaction path curvature coupling leads to the breakdown of the fundamental dynamical approximat...
In gas phase reactions, dynamical recrossings across a phase space dividing surface induced by nonlinear reaction path curvature coupling leads to the breakdown of the fundamental dynamical approximat...
Molecular population transfer, alignment, and orientation using chirped pulse absorption
J. Chem. Phys. 97, 9107 (1992); doi:10.1063/1.463338
Issue Date: 15 December 1992
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We describe a technique for totally transferring the population of a molecular vibronic level to another optically accessible level by chirped pulse absorption. The method can be applied even for nonvanishing angular momentum states where the Rabi frequencies for the transitions depend on the magnetic quantum number M of the states. The population of a large J initial state can be totally transferred to a J![[script ']](http://scitation.aip.org/servlet/GetImg?key=JCPSA6000097000012009107000001%3A0%3A0%3A28&t=a&d=a)
=J+1 state by R branch transitions with linearly or circularly polarized light pulses with negative or positive frequency chirp if the bandwidth of the chirped pulse is sufficiently small. For an initial state with small J, having P(Q) and R transitions that are closely spaced in energy and within the chirped pulse bandwidth, the situation is complicated by the presence of transitions involving additional nearby J states which can participate in transitions induced by the chirped pulse. For positive frequency chirp, population can be totally transferred to the excited electronic state, whereas for the negative frequency chirp case the population distribution depends on the details of the energy levels and laser pulse. The technique can be employed to align and orient states in which not all the M states of the initial level are transferred to the same branch, but each M state is totally transferred from the initial state. Criteria for this type of population transfer and alignment and orientation are described and the conditions under which adiabatic passage is maintained are discussed.
The Journal of Chemical Physics is copyrighted by The American Institute of Physics.
| History: | Received 8 July 1992; accepted 10 September 1992 |
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0021-9606 (print)
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REFERENCES (16)
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