Abstract
The excitation and relaxation processes relevant for establishing optical gain in Al2O3:Er3+ on the 4I13/2 -> 4I15/2 transition at 1.5 µm are investigated. Excited-state absorption in the wavelength range from 900-1800 nm is measured in a pump-probe experiment. The 4I13/2 and 4I11/2 lifetimes are measured after direct excitation and the macroscopic parameter of the energy-transfer-upconversion (ETU) process (4I13/2, 4I13/2) -> (4I15/2, 4I9/2) is determined independently from both decay curves. By use of the Zubenko model the microscopic parameters of ETU and energy migration are derived. It is found that above the Er3+ concentration at which the transition from static to migration-accelerated ETU takes place also the 1.5-µm amplifier gain is diminished by this process.
| Original language | English |
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| Title of host publication | IV International Workshop on Photonic and Electronic Materials 2010 |
| Subtitle of host publication | Scientific Program and Workshop Abstracts |
| Place of Publication | San Sebastian, Spain |
| Publisher | Dostonia International Physics Center |
| Pages | 49-49 |
| Number of pages | 1 |
| Publication status | Published - Jul 2010 |
| Event | IV International Workshop on Photonic and Electronic Materials 2010 - San Sebastian, Spain Duration: 5 Jul 2010 → 7 Jul 2010 |
Workshop
| Workshop | IV International Workshop on Photonic and Electronic Materials 2010 |
|---|---|
| Country/Territory | Spain |
| City | San Sebastian |
| Period | 5/07/10 → 7/07/10 |
Keywords
- METIS-276042
- IOMS-APD: Active Photonic Devices
- EWI-18090
- IR-72292