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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, 02-05 April, 2019, 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 Dates: | 02-05 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: | 31 Jul 2019 20:25 |
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