Classical Laser

Interference Phenomena and Whispering-Gallery Modes of Synchrotron Radiation in a Cylindrical Wave-Guide

“…Really, the first true laser operations [13] in the infrared, at ~3.4m and in the visible [14] at wavelength ~0.65m could be satisfactorly described in the framework of the cassical theory. From the conceptual point of view, this has been in good accord with an earlier analysis of Borenstein and Lamb on the "classical laser" [15]. Nevertheless, Madey [8] has already made some estimates concerning the photon statistics of the proposed FEL.…”

Theory of the quasioptical electron cyclotron maser

“…Substituting (10) into (9) and noting that ExP x is independent of to we obtain for the efficiency the expression Substituting this form for E(z) into (13) and taking the beam entrance and exit planes to be respectively zin=-and z ,out the integrations over z,z and.z can be carried out analytically. The overall expression for the linear, small signal, efficiency takes the rather simple form The former polarization of the electric field is shown to result in substantially higher linear efficiencies compared to the latter polarization.…”

Undulator-Like Radiation and Cooperative Phenomenon in Semiconductor Microstructure with Grating

“…It is known that there are great many approaches in a laser theory, in some of them an active medium is treated as the quantum-mechanical ensemble while the radiation as a classical electromagnetic field (see, for instance, [10]), in some others, both atoms and field, are treated quantum-mechanically [11,12]. However, it turns out and it was shown by Borenstein and Lamb [13] that laser action can be described perfectly well in classical terms only. Hence, to our mind the process of electromagnetic field generation in the structure in question can also be considered in the frame of classical model.…”

“…Let us consider the system of N classical nonlinear oscillators when each one is characterised by mass m, charge e, some characteristic length a which we associate with a period of grating and the undumped angular frequency ω in the presence of an external forcing field with the angular frequency ν. Our model is similar to the one proposed in [13], but differs from it by taking into account the radiation damping, then the evolution of the ensemble of nonlinear oscillators is described by the system of equations…”