Open AccessEr-doped fiber frequency comb with mHz relative linewidth
Author(s) -
Yunseok Kim,
Seungman Kim,
YoungJin Kim,
Hatem Hussein,
Seung-Woo Kim
Publication year - 2009
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.011972
Subject(s) - laser linewidth , phase noise , optics , frequency comb , materials science , metrology , frequency modulation , comb generator , phase modulation , optoelectronics , physics , telecommunications , bandwidth (computing) , laser , computer science
A low-noise fiber frequency comb is demonstrated to improve the frequency accuracy and linewidth by suppressing the phase noise caused by the nonlinear self-phase modulation as well as the amplified spontaneous emission within the Er-doped fiber amplifier. The linewidth of the carrier-envelop- offset signal measures less than 1.9 mHz and the frequency stability well follows the reference Rb clock. This achievement will facilitate the use of the fiber frequency comb for industrial applications to precision near-infrared spectroscopy, frequency calibration, optical clocks and length metrology.