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Alam, Tasmim and Wienold, Martin and Lü, Xiang and Biermann, Klaus and Schrottke, Lutz and Grahn, Holger T. and Hübers, Heinz-Wilhelm (2019) Frequency tuning of terahertz quantum-cascade lasers by spatially controlled optical excitation. French-German THz Conference 2019, 2019-04-02 - 2019-04-05, Kaiserslautern, Germany.
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Abstract
We demonstrate the feasibility of wideband frequency tuning of terahertz quantum-cascade lasers by spatially well-controlled near-infrared optical excitation. We observe a single-mode continuous-wave frequency coverage of up to 40 GHz for a 3.1 THz laser. This represents a tenfold improvement of the tuning range for the same device as compared to tuning by current. This method is applicable to a wide variety of existing terahertz quantum-cascade lasers.
| Item URL in elib: | https://elib.dlr.de/127219/ | ||||||||||||||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||||||||||
| Title: | Frequency tuning of terahertz quantum-cascade lasers by spatially controlled optical excitation | ||||||||||||||||||||||||||||||||
| Authors: |
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| Date: | 2019 | ||||||||||||||||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||||||||||||||||
| Open Access: | Yes | ||||||||||||||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||||||||||||||||
| Status: | Accepted | ||||||||||||||||||||||||||||||||
| Keywords: | THZ QCL, Frequency Tuning, Molecular Spectroscopy | ||||||||||||||||||||||||||||||||
| Event Title: | French-German THz Conference 2019 | ||||||||||||||||||||||||||||||||
| Event Location: | Kaiserslautern, Germany | ||||||||||||||||||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||||||||||||||||||
| Event Start Date: | 2 April 2019 | ||||||||||||||||||||||||||||||||
| Event End Date: | 5 April 2019 | ||||||||||||||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||||||||||
| HGF - Program: | Space | ||||||||||||||||||||||||||||||||
| HGF - Program Themes: | other | ||||||||||||||||||||||||||||||||
| DLR - Research area: | Raumfahrt | ||||||||||||||||||||||||||||||||
| DLR - Program: | R - no assignment | ||||||||||||||||||||||||||||||||
| DLR - Research theme (Project): | R - no assignment | ||||||||||||||||||||||||||||||||
| Location: | Berlin-Adlershof | ||||||||||||||||||||||||||||||||
| Institutes and Institutions: | Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy | ||||||||||||||||||||||||||||||||
| Deposited By: | Alam, Tasmim | ||||||||||||||||||||||||||||||||
| Deposited On: | 29 Apr 2019 11:57 | ||||||||||||||||||||||||||||||||
| Last Modified: | 24 Apr 2024 20:30 |
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