Resonant and thermal changes of refractive index in a heavily doped erbium fiber pumped at wavelength 980nm

Abstract

Articles you may be interested inMode-locked erbium-doped fiber laser based on evanescent field interaction with Sb2Te3 topological insulator Appl. Phys. Lett.Resonant structures based on amorphous silicon suboxide doped with Er 3 + with silicon nanoclusters for an efficient emission at 1550 nm Measurement of the nonlinear refractive index of polydiacetylene using Michelson interferometry and z-scan

Self-induced laser line sweeping in an ytterbium fiber laser with non-resonant Fabry-Perot cavity

“…Indeed, according to the model of pump light's absorption and conversion of absorbed power in heat with its posterior dissipating on the fiber surface -air interface (see e.g. [12,30]), we have gotten the following results. A temperature rise in the YF core, for the pumps interval P p = 0 -8 W, ΔT therm is found to be less than 0.5…”

Dynamic Bragg gratings induced in erbium-doped fiber at phase-Modulated beams' coupling

“…Thus, one can conclude that gain and grating amplitude are distributed homogeneously through the fiber. In this case, (6) is analytically solved giving (12) where and are the modulation depths for the output signal beam at the fundamental and second harmonics of PM, cm is the erbium fiber length, and is the reflection coefficient of the fiber flat cleave.…”

“…The resonant refractive index change in the fiber core is related to the change in the real part of atomic susceptibility as , where is calculated with the use of the KKR and the data on the fiber absorption and gain spectra as [12] (1) where is the relative change in the excitedstate population (DNE is the change in the excited state popultion;…”

Kinetics of the refractive index change in the core of active fibers, doped with Yb3+ and Er3+ ions, under pulsed optical pumping

“…This RIC mechanism will be referred to as electronic. The dependence of the refractive index on the pop ulation of active medium levels affects the spatial las ing characteristics in bulk solid laser media [9] and leads to the occurrence of resonant dispersion in erbium doped fiber amplifiers [4,[12][13][14].…”