Three-dimensional plot of transfer peaks from <em>v</em> = 7 to <em>v</em> = 8 for different pulse durations in the λ/I plane
A Jaouadi
M Desouter-Lecomte
R Lefebvre
O Atabek
10.6084/m9.figshare.1012227.v1
https://iop.figshare.com/articles/figure/_Three_dimensional_plot_of_transfer_peaks_from_em_v_em_7_to_em_v_em_8_for_different_pulse_durations_/1012227
<p><strong>Figure 4.</strong> Three-dimensional plot of transfer peaks from <em>v</em> = 7 to <em>v</em> = 8 for different pulse durations in the λ/I plane. The colour code applies to P_{8,7}^{{\rm WP}}(T_{{\rm max}})/P_{7,7}^{{\rm WP}}(T_{{\rm max}}). The position of the EP(7,8) as calculated from the Floquet formalism, is indicated by the red solid rectangle at λ<sup>EP</sup> = 363 nm , I^{{\rm EP}}=0.58\times 10^{13} \rm \ \rm \ W\,cm^{-2}.</p> <p><strong>Abstract</strong></p> <p>Laser control schemes for selective population inversion between molecular vibrational states have recently been proposed in the context of molecular cooling strategies using the so-called exceptional points (corresponding to a couple of coalescing resonances). All these proposals rest on the predictions of a purely adiabatic Floquet theory. In this work we compare the Floquet model with an exact wavepacket propagation taking into account the accompanying non-adiabatic effects. We search for signatures of a given exceptional point in the wavepacket dynamics and we discuss the role of the non-adiabatic interaction between the resonances blurring the ideal Floquet scheme. Moreover, we derive an optimal laser field to achieve, within acceptable compromise and rationalizing the unavoidable non-adiabatic contamination, the expected population inversions. The molecular system taken as an illustrative example is H_{2}^{+}.</p>
2013-06-26 00:00:00
Floquet formalism
max
wavepacket propagation
transfer peaks
vibrational states
population inversion
pulse durations
Floquet scheme
adiabatic Floquet theory
proposals rest
ep
laser field
coalescing resonances
Floquet model
population inversions
wavepacket dynamics
colour code
wp
cooling strategies
Atomic Physics
Molecular Physics