Abstract
Decay curves of 1.5 μm (4I13/2) and 980 nm (4I11/2) emissions from Er3+ ions in Ga2S3-GeS2-La2S3 glasses were measured by the excitation of 1.5 μm laser diode pump. The decay curves were simulated using rate equations for a model consisting of four levels (4I15/2, 4I13/2, 4I11/2, and 4I9/2) of Er3+. A pair of unknown parameters, i.e., an excited state absorption coefficients for 4I13/2→4I9/2, σesa, and a cooperative upconversion coefficient for (4I13/2, 4I15/2)→(4I9/2, 4I15/2), C, were included in the rate equations. They were estimated by fitting the simulated curves to the measured ones. The obtained values were 3×10-21 cm2 and 1 or 3×10-21 cm3/s for the σesa and C, respectively.
Original language | English (US) |
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Pages (from-to) | 14-20 |
Number of pages | 7 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 3942 |
DOIs | |
State | Published - 2000 |
Externally published | Yes |
Event | Rare-Earth-Doped Materials and Devices IV - San Jose, CA, USA Duration: Jan 26 2000 → Jan 27 2000 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering