Improving VCSEL's & Rare-Earth-Doped Led's.
Abstract
The possibility of enhancing the luminescence efficiency of Er ions embedded in a semiconductor was investigated by growing about forty erbium-doped lnGaAs/GaAs and GaAs/AlGaAs multiple quantum well samples by molecular beam epitaxy. The idea was to enhance the semiconductor-to- erbium transfer by tuning the quantum-well transition energy to equal one of the erbium ion transitions. Although photoluminescence was seen up to room temperature, strong diffusion of erbium and interdiffusion of Ga and Al ions degraded the quantum wells and formed Er traps that differ by positions of fine structure lines, photoluminescence lifetimes, and temperature dependences.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 11, 1998
- Accession Number
- ADA357987
Entities
People
- Galina Khitrova
- Hyatt M. Gibbs
Organizations
- University of Arizona