Title :
Effect of sensitizers on the optical properties of Er3+ ions in erbium glass lasers
Author :
Sattar, A.M.A. ; Azzouz, I.M. ; Shafik, M. Salah ; Badr, Y.A.
Author_Institution :
Nat. Inst. of Laser Enhanced Sci., Cairo Univ., Egypt
Abstract :
Two different host glasses for Er3+, namely, phosphate and borate glasses were prepared. Yb3+ was added as a sensitizer to investigate its effect on the absorption, emission, gain cross sections as well as threshold pumping intensity for generation of laser radiation. Another sensitizer, Cr3+, was added to Er 3+. The enhancement of absorption and emission of Er3+ were investigated, in addition, the energy transfer efficiency from Cr3+ to Er3+ was determined from the emission of Cr3+. The threshold, intensity for Er3+ laser at 1543 nm is reduced to about 54 times using Yb3+ as a sensitizer
Keywords :
absorption coefficients; erbium; fluorescence; optical pumping; radiative lifetimes; solid lasers; stimulated emission; 1543 nm; absorption enhancement; borate glasses; energy transfer efficiency; erbium doped glass lasers; eye-safe regions; fluorescence spectra; gain cross sections; line strength; optical properties; phosphate glasses; radiative transition probability; sensitizer effect; stimulated emission cross-section; threshold pumping intensity; Absorption; Chromium; Energy exchange; Erbium; Glass; Laser excitation; Optical pumping; Optical sensors; Pump lasers; Stimulated emission;
Conference_Titel :
Photonics and Its Application at Egyptian Engineering Faculties and Institutes, 2002. Third Workshop on
Conference_Location :
Giza
Print_ISBN :
0-7803-7163-1
DOI :
10.1109/PAIA.2002.995081
