Die u:cris Detailansicht:
THz quantum cascade lasers with wafer bonded active regions
- Autor(en)
- Martin Brandstetter, Christoph Deutsch, Alexander Benz, Garrett Cole, Hermann Detz, A. M. Andrews, Werner Schrenk, Gottfried Strasser, Karl Unterrainer
- Abstrakt
We demonstrate terahertz quantum-cascade lasers with a 30 mu m thick double-metal waveguide, which are fabricated by stacking two 15 mu m thick active regions using a wafer bonding process. By increasing the active region thickness more optical power is generated inside the cavity, the waveguide losses are decreased and the far-field is improved due to a larger facet aperture. In this way the output power is increased by significantly more than a factor of 2 without reducing the maximum operating temperature and without increasing the threshold current.
- Organisation(en)
- Quantenoptik, Quantennanophysik und Quanteninformation
- Externe Organisation(en)
- Technische Universität Wien
- Journal
- Optics Express
- Band
- 20
- Seiten
- 23832-23837
- Anzahl der Seiten
- 6
- DOI
- https://doi.org/10.1364/OE.20.023832
- Publikationsdatum
- 10-2012
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103026 Quantenoptik, 103008 Experimentalphysik, 210006 Nanotechnologie, 103025 Quantenmechanik
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/1d671119-900f-47e0-aab5-1211c7ce2164