Over the past few decades, there has been extensive research work carried out in the area
of nonlinear optics and opened a myriad of applications in material science and …

In rare earth ion doped solids, a resonant non-linear refractive index, n2, appears when the
laser pumps one of the ion excited states and the refractive index change is proportional to …

In this work, we report the theoretical results of the single beam transmittance of an absorber
by employing the rate equation approach, utilizing 10 ns laser pulses. With the appropriate …

In self-mixing laser Doppler velocimetry (LDV), the motion of a moving target is observed by
using intensity-modulated laser light detected by a simple photodetector. Here, the self …

Abstract Based on Fresnel–Kirchhoff diffraction theory, the effect of high order nonlinearities
and saturable Kerr media in Z-scan experiments are theoretically investigated. Analytical …

Z-scan technique is applied to a saturable medium described by a generalized three-level
scheme of photoexcitation in the condition of overlapping spectra of the ground and excited …

A model of degenerate four-wave mixing (DFWM) in Cr^ 4+: YAG saturable absorbers is
given in the transient regime. Because of the presence of absorbing dipoles oriented along …

A theoretical guide to fabricating materials which could support bistable bright optical
solitons in the sense of Kaplan's definition is presented. The approach is to build up the …

It now well known in laser materials, that a refractive index change appears when the active
ions are pumped from ground to excited state due to the polarizability difference between …

Several experiments (time-resolved Z-scan experiments based on pulsed and CW pump
lasers, time-resolved divergence diagnostics) have been performed to examine and clarify …