aqora

Coherent Photon Emission by Fast Particle Excited Atoms in Electromagnetic Field

M. I. Riazanov

Springer eBooksJan 1, 19750 citations

Excitation and Emission of an Atom in Its Interaction with an Ultrashort Electromagnetic Field Pulse

V. I. Matveev, Е. В. Иванова

Russian Physics JournalApr 1, 20031 citation

Coherent emission of a photon by many atoms

V. Ernst

The European Physical Journal AApr 1, 196937 citations

Detailed description of spontaneous emission

Marat Vladimirovich Guryev

The wave side of wave–photon duality, describing light as an electromagnetic field (EMF), is used in this article. The EMF of spontaneous light emission (SE) of a laser-excited atom is calculated from first principles for the first time. This calculation is done using the simple method of atomic quantum electrodynamics. The EMF of SE is also calculated for three types of polyatomic light sources excited by a laser. It is shown that light radiated by such sources can be coherent, which explains recent experiments on SE of laser-excited atoms. Small sources of SE can be superradiant, which also conforms to experiment. Thus, SE is shown not to be a random event itself. Random properties of natural light are simply explained as a result of thermal excitation randomness without additional hypotheses. The EMF of SE is described by simple complex functions, but not real ones.The wave side of wave–photon duality, describing light as an electromagnetic field (EMF), is used in this article. The EMF of spontaneous light emission (SE) of a laser-excited atom is calculated from first principles for the first time. This calculation is done using the simple method of atomic quantum electrodynamics. The EMF of SE is also calculated for three types of polyatomic light sources excited by a laser. It is shown that light radiated by such sources can be coherent, which explains recent experiments on SE of laser-excited atoms. Small sources of SE can be superradiant, which also conforms to experiment. Thus, SE is shown not to be a random event itself. Random properties of natural light are simply explained as a result of thermal excitation randomness without additional hypotheses. The EMF of SE is described by simple complex functions, but not real ones.

arXiv:1101.3082Journal of Modern OpticsAug 10, 20121 citation

Light-matter interaction and Bose-Einstein condensation of light

Vivek M. Vyas, Prasanta Kumar Panigrahi, Venkatraman Srinivasan

The atom - electromagnetic field interaction is studied in the Dicke model, wherein a single field mode is interacting with a collection of two level atoms at thermal equilibrium. It is found that in the superradiant phase of the system, wherein the Bose-Einstein condensation of photons takes place, the notion of photon as an elementary electromagnetic excitation ceases to exist. The phase and intensity excitations of the condensate are found to be the true excitations of electromagnetic field. It is found that in this phase, the atom interacts with these excitations in a distinct coherent transition process, apart from the known stimulated emission/absorption and spontaneous emission processes. In the coherent transition it is found that while the atomic state changes in course of the transition process, the state of electromagnetic field remains unaffected. It is found that the transition probability of such coherent transition process is macroscopically large compared to other stimulated emission/absorption and spontaneous emission processes.The atom - electromagnetic field interaction is studied in the Dicke model, wherein a single field mode is interacting with a collection of two level atoms at thermal equilibrium. It is found that in the superradiant phase of the system, wherein the Bose-Einstein condensation of photons takes place, the notion of photon as an elementary electromagnetic excitation ceases to exist. The phase and intensity excitations of the condensate are found to be the true excitations of electromagnetic field. It is found that in this phase, the atom interacts with these excitations in a distinct coherent transition process, apart from the known stimulated emission/absorption and spontaneous emission processes. In the coherent transition it is found that while the atomic state changes in course of the transition process, the state of electromagnetic field remains unaffected. It is found that the transition probability of such coherent transition process is macroscopically large compared to other stimulated emission/absorption and spontaneous emission processes.

arXiv:1602.08280Feb 26, 20160 citations

Theory of stimulated coherent emission from atoms in spaced light fields

E. V. Baklanov, B Ya Dubetskiĭ, Семибаламут Владимир Михайлович

Zhurnal Eksperimentalnoi i Teoreticheskoi FizikiFeb 1, 19790 citations

Coherent light emission by atoms excited by fast particles in an electromagnetic field

Related papers

Coherent light emission by atoms excited by fast particles in an electromagnetic field

Related papers