No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
On the optimization, and the intensity dependence, of the excitation rate for the absorption of two-photons due to the direct permanent dipole moment excitation mechanism
B.W. Shore, The Theory of Coherent Atomic Excitation: Simple Atoms and Fields (John Wiley, 1990), Vol. 1.
F.W.J. Oliver, in Handbook of Mathematical Functions, edited by M. Abramowitz and I. Stegun (National Bureau of Standards, U.S.A, 1964), ch 9.
R.W. Boyd, Nonlinear Optics (Academic, 1992).
J.I. Steinfeld, Molecular Radiation (MIT Press, 1985).
M. Sargent III, M.O. Sully, and E. Lamb, Laser Physics (Addison-Wesley, 1974).
W.M. McClain and R.A. Harris, in Excited States, edited by E.C. Lim (Academic Press, 1977).
Confocal and Two-Photon Microscopy, edited by A. Diaspro (Wiley, 2002).
R. Loudon, The Quantum Theory of Light (Clarendon, 1973), pp. 90–100.
A.E. Kondo and W.J. Meath, Molec. Phys. 92, 805 (1997).
M. Quack, Adv. Chem. Phys. 50, 395 (1982).
A. Rebane, M. Drobizeh, N. Makarov, E. Beuerman, J. E. Haley, D.M. Krein, A.R. Burke, J.L. Flikkema, and T.M. Copper, J. Phys. Chem. A 115, 4255 (2011).
M.G. Vivas, D.L. Silva, J. Malinge, M. Boujtita, R. Zalesny, W. Bartkowiak, H. Agren, S. Canuto, L. De Boni, E. Ishow, and C.R. Mendonca, Scientific Reports 4, 4447 (2014).
Article metrics loading...
A model two-level dipolar molecule, and the rotating wave approximation and perturbation theory, are used to investigate the optimization and the laser intensity dependence of the two-photon excitation rate via the direct permanent dipole mechanism. The rate is proportional to the square of the laser intensity I only for small intensities and times when perturbation theory is applicable. An improvement on perturbation theory is provided by a small time RWA result for the rate which is not proportional to I2; rather it is proportional to the square of an effective intensity Ieff. For each laser intensity the optimum RWA excitation rate as a function of time, for low intensities, is proportional to I, not I2, and for high intensities it is proportional to Ieff. For a given two-photon transition the laser-molecule coupling optimizes for an intensity Imax which, for example, leads to a maximum possible excitation rate as a function of time. The validity of the RWA results of this paper, and the importance of including the effects of virtual excited states, are also discussed briefly.
Full text loading...
Most read this month