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Perturbation theory for quasienergy (Floquet) solutions in the low-frequency regime of the oscillating electric field
Hanna Martiskainen, Nimrod Moiseyev
For a simple illustrative model Hamiltonian for Xenon in low frequency linearly polarized laser field we obtain a remarkable agreement between the zero-order energy as well as ampl…
Strong impact of light induced conical intersections on the spectrum of diatomic molecules
Milan Sindelka, Nimrod Moiseyev, Lorenz S. Cederbaum
We show that dressing of diatomic molecules by running laser waves gives rise to conical intersections (CIs). Due to presence of such CIs, the rovibronic molecular motions are stro…
Generation of Higher-Order Harmonics By Addition of a High Frequency XUV Radiation to the IR One
Avner Fleischer, Nimrod Moiseyev
The irradiation of atoms by a strong IR laser field of frequency results in the emission of odd-harmonics of ("IR harmonics") up to some maximal cut-off frequency. The addi…
Amplification of High Harmonics Using Weak Perturbative High Frequency Radiation
Avner Fleischer, Nimrod Moiseyev
The mechanism underlying the substantial amplification of the high-order harmonics q \pm 2K (K integer) upon the addition of a weak seed XUV field of harmonic frequency qωto a stro…
Adiabatic theorem for non-hermitian time-dependent open systems
Avner Fleischer, Nimrod Moiseyev
In the conventional quantum mechanics (i.e., hermitian QM) the adia- batic theorem for systems subjected to time periodic fields holds only for bound systems and not for open ones…
Above-well, Stark, and potential-barrier resonances of an open square well in a static external electric field
A. Emmanouilidou, N. Moiseyev
Besides the well known Stark resonances, which are localized in the potential well and tunnel through the potential barrier created by the dc-field, "strange" long and short-lived…