Propagation of ultrashort pulses in single-mode fiber

Abstract

Propagation of ultrashort pulses in dispersing media and optical fibers is calculated and analyzed. An analytical expression for the electric field of ultra short pulse after propagating certain distance z is derived in the second order dispersion theory. The propagation of a Gaussian pulse is considered. ultra-short pulses, optical fiber, dispersion

Excitation of Highly Charged Ions in Plasma by Ultrashort Electromagnetic Pulses

“…The formulas (13) - (14) follow from corresponding expressions of the work [17]. The upper sign corresponds to a maximum, and the lower sign corresponds to a minimum in the dependence of the excitation probability on the pulse duration.…”

“…In this case the equations (13) - (14) describe both the total probability of HCI excitation and excitation to each of sublevels. In this case the equations (13) - (14) describe both the total probability of HCI excitation and excitation to each of sublevels.…”

“…The characteristic features of excitation of a two-level system by USP were studied in a number of works (for example, see [11][12][13][14]). In the paper [11], the dynamics of a two-level system in the field of a subcycle laser pulse was analyzed on the basis of solution of the Schrödinger equation.…”

“…In the paper [13], excitation of a two-level system under the action of a chirped pulse was studied both within the framework of the perturbation theory and on the basis of numerical solution of the optical Bloch equations. The work [14] was dedicated to the study of spectral and temporal features of excitation of a two-level system under the action of USP of different shapes within the framework of the perturbation theory. In case of a Gaussian pulse, the relation was established between the detuning of its carrier frequency from the transition eigenfrequency and the USP duration at which the excitation probability is maximum.…”