Emission spectra of YAG:Er3+under pulse laser-thermal excitation

V.M Marchenko,Yu.A Shakir,E.A Vinogradov,K.R Karimullin,A.V Naumov,M.G Gladush

doi:10.1051/epjconf/201713203051

Abstract

Spectra and kinetics of emission of YAG:0.5% Er 3+ monocrystal in visible and NIR ranges were investigated under laser-thermal excitation by the pulses of CO 2 laser of 100 ns duration at wavelength λ = 10,6 μμm. Kinetics of integral emission was interpreted.

Highlights

Spectra of YAG:0.5% Er3+ monocrystal under laser-thermal excitation by pulses of CO2 laser were recorded by spectrometer AvaSpec 2048 with sensitivity calibrated using etalon tungsten lamp
Intensities of spectra grow with increase of laser pulse energy densities W1
According to calculations input layer of 100 μm thickness is heated by the laser pulse with W=0.5 y 2.0 J/cm2 and λ=10.6 μm up to Т= 500 y 1100К and population of Er3+ electronic-vibrational levels increases

Summary

Introduction

Spectra of YAG:0.5% Er3+ monocrystal under laser-thermal excitation by pulses of CO2 laser were recorded by spectrometer AvaSpec 2048 with sensitivity calibrated using etalon tungsten lamp. Laser-thermal spectra of monocrystal are superpositions of continuous spectrum and selective emission (SE) peaks.

Results

Conclusion