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Frequency noise of free-running 4.6 um distributed feedback quantum cascade lasers near room temperature
Abstract The frequency noise properties of commercial distributed feedback quantum cascade lasers emitting in the 4.6 um range and operated in cw mode near room temperature (277K) are presented. The measured frequency noise power spectral density reveals a flicker noise dropping down to the very low level of <100 Hz2/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.
   
Keywords Fluctuations, relaxations, and noise; Linewidth;Semiconductor lasers, quantum cascade
   
Citation Tombez, L., Di Francesco, J., Schilt, S., Di Domenico, G., Faist, J., Thomann, P., & Hofstetter, D. (2011). Frequency noise of free-running 4.6 um distributed feedback quantum cascade lasers near room temperature. Optics Letters, 36(16), 3109-3111.
   
Type Journal article (English)
Date of appearance 10-8-2011
Journal Optics Letters
Volume 36
Issue 16
Pages 3109-3111
URL http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-1...
Related project Fundamental metrology with laser-cooled atoms and optical...