High power superlattice quantum cascade laser emitting at 2.0 THz
| Autor: | C.H. Worrall, Carlo Sirtori, Harvey E. Beere, Mark Houghton, Jesse Alton, Stefano Barbieri, David A. Ritchie |
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| Rok vydání: | 2006 |
| Předmět: |
Physics
business.industry Terahertz radiation Superlattice Physics::Optics Heterojunction Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Gallium arsenide law.invention Semiconductor laser theory chemistry.chemical_compound chemistry law Continuous wave Optoelectronics business Quantum cascade laser Lasing threshold |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| Popis: | We report the operation of a 2 THz quantum cascade laser based on a GaAs/Al 0.1 Ga 0.9 As heterostructure. Lasing action takes place between an isolated subband and the upper state of a 14 meV wide miniband. In pulsed mode, with a 3.16mm long device, we report a threshold current density of 115 A/cm 2 at T = 4K, with a maximum measured peak power of 50 mW. The device shows lasing action in continuous wave up to 47K, with a maximum power in excess of 15 mW at T = 4K. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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