Open AccessAnalysis of the feed-forward method for the referencing of a CW laser to a frequency comb
Author(s) -
Davide Gatti,
Tommaso Sala,
Giovanni Alessio,
Nicola Coluccelli,
G. Nunzi Conti,
G. Galzerano,
P. Laporta,
Marco Marangoni
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.024880
Subject(s) - optics , frequency comb , laser , phase noise , bandwidth (computing) , comb generator , frequency deviation , materials science , fourier transform , noise (video) , automatic frequency control , physics , telecommunications , computer science , quantum mechanics , artificial intelligence , image (mathematics)
We report on a comprehensive theoretical and experimental analysis of the feed-forward method for external frequency stabilization of a continuous wave laser against a frequency comb. Application of the method to a distributed feedback diode laser at 1.55 μm allows line narrowing from 800 to 10 kHz, with frequency noise reduction by more than 2 decades up to a Fourier frequency of 100 kHz and a maximum control bandwidth of 0.8 MHz. The results are consistent with a relative phase fluctuation of 1.4 rad rms, as limited by uncompensated high-frequency noise of the slave laser.