| Autor: |
Joshua R. Freeman, Julien Madéo, Anthony Brewer, Sukhdeep Dhillon, Owen P. Marshall, Nathan Jukam, Dimitri Oustinov, Jerome Tignon, Harvey E. Beere, David A. Ritchie, Jisoon Ihm, Hyeonsik Cheong |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings. |
| ISSN: |
0094-243X |
| DOI: |
10.1063/1.3666454 |
| Popis: |
We describe a heterogeneous THz quantum cascade laser that is composed of two different active region designs. This device emits simultaneously at around 2.5 THz and 2.9 THz with a certain frequency tunability by applied current. We also investigate the spectral gain in the structure by THz time‐domain spectroscopy and correlate the gain spectral bandwidth with the alignment and wavelength emission behaviour of the two stack device. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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