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Di Francesco, Joab
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Di Francesco, Joab
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- PublicationAccès libreFrequency noise of free-running 4.6 um distributed feedback quantum cascade lasers near room temperature(2011-8-10)
; ; ; ; ; 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.