✦ LIBER ✦
Electron Beam Pumped Nitride Vertical Cavity Surface Emitting Structures with AlGaN/AlN DBR Mirrors
✍ Scribed by Klausing, H. ;Fedler, F. ;D�nhardt, J. ;Jaurich, R. ;Kariazine, A. ;G�nster, S. ;Mistele, D. ;Graul, J.
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 258 KB
- Volume
- 194
- Category
- Article
- ISSN
- 0031-8965
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✦ Synopsis
De
Vertical cavity surface emitting structures designed for electron beam (EB) pumping have been grown by plasma assisted molecular beam epitaxy (PA-MBE). For the first time, AlGaN/AlN DBRs in conjunction with dielectric SiO 2 /HfO 2 reflectors are utilized to embed GaN/AlGaN MQWs. PL spectra measured under weak photoexcitation reveal an enhancement of spontaneous emission reaching a Q factor of 425. One hybrid structure has been successfully pumped by pulsed EB and laser excitation showing an onset of stimulated emission.