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Calculation of Resonant Multiphoton Processes

Michele Crance

Elsevier eBooksJan 1, 19843 citations

Multiphoton Processes in Atoms

Nikolai B. Delone, В. П. Крайнов

Springer eBooksJan 1, 2000222 citations

Multiphoton scattering processes

S.C. Yeh, P. Stehle

A direct, completely quantum mechanical method of calculating transition probabilities involved in multiphoton scattering processes is described. It is applied to the often treated problem of resonance fluorescence of a two-level atom and is used to give a completely general description of the resonance scattering from an atom with two nearly degenerate excited states coupled to a ground state. Other applications of the method are indicated.

Journal of Physics B Atomic and Molecular PhysicsJun 14, 19818 citations

HAMILTONIAN FORMULATION FOR THE THEORY OF MULTIPHOTON PROCESSES IN ATOMS BASED ON THE FIRST PRINCIPLES

A. A. Bakasov

A Hamiltonian is derived on the basis of the first principles of quantum electrodynamics. The Hamiltonian is seen to describe two- and multiphoton processes. A problem of consequent derivation and microscopic substantiation of models of multiphoton processes widely used in quantum optics is solved. The first correction to the Pauli equation is obtained. The constant of interaction of a two-level atom with two photons is given in an explicit form. A method of calculating interaction constants for multilevel atoms with multiphoton transitions is presented. Other results obtained on the basis of the developed approach are announced.A Hamiltonian is derived on the basis of the first principles of quantum electrodynamics. The Hamiltonian is seen to describe two- and multiphoton processes. A problem of consequent derivation and microscopic substantiation of models of multiphoton processes widely used in quantum optics is solved. The first correction to the Pauli equation is obtained. The constant of interaction of a two-level atom with two photons is given in an explicit form. A method of calculating interaction constants for multilevel atoms with multiphoton transitions is presented. Other results obtained on the basis of the developed approach are announced.

International Journal of Modern Physics BJul 1, 19890 citations

Multiphoton Processes in Atoms

Nikolai B. Delone, В. П. Крайнов

Springer eBooksJan 1, 1994305 citations

Multiphoton ionization of atoms in the presence of multiple resonances

Svetlana Kotochigova

A model of multiple resonances between groups of discrete and autoionizing levels is proposed for the description of the process of multiphoton ionization. The phenomena of the extremely rapid broadening and growth of amplitudes of the multiphoton resonances, observed experimentally in the yield of Sr+ and Ba+ ions [ J. Phys. B.14, 2253– 2359 ( 1981);Elementary Processes in Laser Radiation Field ( 1988), pp. 122– 153)] are explained on the basis of this model. The strong-coupling method was used in numerical calculations for Sr and Ba atoms in a strong laser field.A model of multiple resonances between groups of discrete and autoionizing levels is proposed for the description of the process of multiphoton ionization. The phenomena of the extremely rapid broadening and growth of amplitudes of the multiphoton resonances, observed experimentally in the yield of Sr+ and Ba+ ions [ J. Phys. B.14, 2253– 2359 ( 1981);Elementary Processes in Laser Radiation Field ( 1988), pp. 122– 153)] are explained on the basis of this model. The strong-coupling method was used in numerical calculations for Sr and Ba atoms in a strong laser field.

Journal of the Optical Society of America BAug 1, 19926 citations

Method of calculation of multiphoton processes in atoms

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