Frequency noise of free-running 4.6 μm distributed feedback quantum cascade lasers near room temperature.
- Tombez L LTF Laboratoire Temps-Fréquence, Institut de Physique, Université de Neuchâtel, Bellevaux 51, 2000 Neuchâtel, Switzerland. lionel.tombez@unine.ch
- Di Francesco J
- Schilt S
- Di Domenico G
- Faist J
- Thomann P
- Hofstetter D
- 2011-08-18
Published in:
- Optics letters. - 2011
English
The frequency noise properties of commercial distributed feedback quantum cascade lasers emitting in the 4.6 μm range and operated in cw mode near room temperature (277 K) are presented. The measured frequency noise power spectral density reveals a flicker noise dropping down to the very low level of <100 Hz(2)/Hz at 10 MHz Fourier frequency and is globally a factor of 100 lower than data recently reported for a similar laser operated at cryogenic temperature. This makes our laser a good candidate for the realization of a mid-IR ultranarrow linewidth reference.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1364/OL.36.003109
- PMID 21847176
- Persistent URL
- https://folia.unifr.ch/global/documents/126585
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