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Opt Express. 2016 Nov 28;24(24):27961-27978. doi: 10.1364/OE.24.027961.

Time-dependent laser linewidth: beat-note digital acquisition and numerical analysis.

Abstract

We revisit and improve the optical heterodyne technique for the measurement of the laser coherence, by digital acquisition of the beat-note and numerical analysis of the resulting signal. Our main result is that with the same experimental setup we reach the very "short-time linewidth" with the highest accuracy as well as the frequency noise spectrum.

PMID:
27906364
DOI:
10.1364/OE.24.027961

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