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Alam, Tasmim and Wienold, Martin and Lü, Xiang and Schrottke, Lutz and Grahn, Holger T. and Hübers, Heinz-Wilhelm (2019) Stabilizing A Terahertz Quantum-cascade Laser Using Near-infrared Optical Excitation. 44th International Conference on Infrared, Millimeter, and Terahertz Waves, 2021-09-01 - 2021-09-06, Paris, France. doi: 10.1109/IRMMW-THz.2019.8873858. ISBN 978-1-5386-8285-2. ISSN 2162-2035.
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Abstract
We demonstrate a technique to simultaneously stabilize the frequency and output power of a terahertz quantum-cascade laser. The technique exploits frequency and power variations upon near-infrared excitation and does not require an external terahertz optical modulator. By locking the frequency to a molecular absorption line, we obtain a linewidth of about 260 kHz and root-mean-square power fluctuations as low as 0.03%.
| Item URL in elib: | https://elib.dlr.de/141631/ | ||||||||||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||||||
| Title: | Stabilizing A Terahertz Quantum-cascade Laser Using Near-infrared 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 | ||||||||||||||||||||||||||||
| DOI: | 10.1109/IRMMW-THz.2019.8873858 | ||||||||||||||||||||||||||||
| ISSN: | 2162-2035 | ||||||||||||||||||||||||||||
| ISBN: | 978-1-5386-8285-2 | ||||||||||||||||||||||||||||
| Status: | Accepted | ||||||||||||||||||||||||||||
| Keywords: | QCL stabilization | ||||||||||||||||||||||||||||
| Event Title: | 44th International Conference on Infrared, Millimeter, and Terahertz Waves | ||||||||||||||||||||||||||||
| Event Location: | Paris, France | ||||||||||||||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||||||||||||||
| Event Start Date: | 1 September 2021 | ||||||||||||||||||||||||||||
| Event End Date: | 6 September 2021 | ||||||||||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||||||
| HGF - Program: | Space | ||||||||||||||||||||||||||||
| HGF - Program Themes: | Earth Observation | ||||||||||||||||||||||||||||
| DLR - Research area: | Raumfahrt | ||||||||||||||||||||||||||||
| DLR - Program: | R EO - Earth Observation | ||||||||||||||||||||||||||||
| DLR - Research theme (Project): | R - Terahertz spectrometer for atomic oxygen in the mesosphere/thermosphere | ||||||||||||||||||||||||||||
| Location: | Berlin-Adlershof | ||||||||||||||||||||||||||||
| Institutes and Institutions: | Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy | ||||||||||||||||||||||||||||
| Deposited By: | Alam, Tasmim | ||||||||||||||||||||||||||||
| Deposited On: | 12 Apr 2021 11:24 | ||||||||||||||||||||||||||||
| Last Modified: | 08 Aug 2025 10:47 |
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