Open AccessEFFECTS OF Ce3+ ON PROPERTIES OF THE ～1.6μm WAVELENGTH LASER FROM THE Er3+ DOPED YAG CRYSTAL
Author(s) -
Huang Li-lei
Publication year - 1999
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.48.65
Subject(s) - materials science , ion , laser , crystal (programming language) , wavelength , slope efficiency , doping , absorption (acoustics) , atomic physics , optics , analytical chemistry (journal) , optoelectronics , fiber laser , chemistry , physics , organic chemistry , chromatography , computer science , composite material , programming language
The absorption cross-section of Ce3+ ions in the Ce3+,Er3+∶YAG crystal has been measured.The laser threshold energy (or power) and laser slope efficiency are calculated using a formula deduced from rate equations on the transitions of energy levels.It is shown that the effect of Ce3+ ions in Ce3+,Er3+∶YAG on properties of the laser at 1.6μm wavelength depends upon the active ion concentration and the length of the crystal rod.The effect of Ce3+ ion is to reduce the laser threshold energy and increase the slope efficiency,when the crystal rod is shorter or the concentration of Er3+ ion is lower.But when the crystal rod is longer or the concentration of Er3+ ion is higher,the effect of Ce3+ ions is on the contrary.