Epitaxial-Side Mounting of Terahertz Quantum- Cascade Lasers for Improved Heat Management
| Autor: | Olaf Krüger, Martin Wienold, Deepak Prasai, Klaus Biermann, W. Pittroff, Rajesh Sharma, Leonhard Dr. Weixelbaum, Götz Erbert, Frank Schnieder, Holger T. Grahn, S. Kreutzmann, Günther Tränkle, Wilfred John, Lutz Schrottke |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
business.industry Terahertz radiation chemistry.chemical_element Temperature cycling Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Photomixing Thermal conductivity Operating temperature chemistry law Sapphire Optoelectronics Electrical and Electronic Engineering business Indium |
| Zdroj: | IEEE Photonics Technology Letters. 25:1570-1573 |
| ISSN: | 1941-0174 1041-1135 |
| DOI: | 10.1109/lpt.2013.2271323 |
| Popis: | First results on epitaxial-side (epi-down) mounting of terahertz quantum-cascade lasers (QCLs) on sapphire submounts using indium solder are presented. The single-plasmon ridge waveguide lasers emit in the range 3.1–3.3 THz. An epi-down mounting scheme for stressless assembly is realized, which provides enhanced heat dissipation at the corresponding operating temperature and high stability against thermal cycling. The thermal conductance of the devices is improved by 30%, and the maximum continuous-wave operating temperature is increased by 10 K for epi-down mounted lasers achieving output power levels ${>}{\rm 3}~{\rm mW}$ at 55 K. |
| Databáze: | OpenAIRE |
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