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Journal articles
Phase noise characterization of sub-hertz linewidth lasers via digital cross correlation
Abstract : Phase noise or frequency noise is a key metric to evaluate the short-term stability of a laser. This property is of great interest for the applications but delicate to characterize, especially for narrow linewidth lasers. In this Letter, we demonstrate a digital cross-correlation scheme to characterize the absolute phase noise of sub-hertz linewidth lasers. Three 1542 nm ultra-stable lasers are used in this approach. For each measurement, two lasers act as references to characterize a third one. Phase noise power spectral density from 0.5 Hz to 0.8 MHz Fourier frequencies can be derived for each laser by a mere change in the configuration of the lasers. To the best of our knowledge, this is the first time showing the phase noise of sub-hertz linewidth lasers with no reference limitation. We also present an analysis of the laser phase noise performance.
Cited literature [28 references]
https://hal.archives-ouvertes.fr/hal-01554655
Contributor : Inspire Hep <>
Submitted on : Tuesday, March 24, 2020 - 7:46:08 PM
Last modification on : Tuesday, March 2, 2021 - 10:53:17 PM
Long-term archiving on: : Thursday, June 25, 2020 - 3:35:42 PM
Contributor : Inspire Hep <>
Submitted on : Tuesday, March 24, 2020 - 7:46:08 PM
Last modification on : Tuesday, March 2, 2021 - 10:53:17 PM
Long-term archiving on: : Thursday, June 25, 2020 - 3:35:42 PM
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1703.05983.pdf
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