Mid-infrared fibre-based optical comb
Maddaloni P, Malara P, Gagliardi G, De Natale P
spectroscopy comb
An optical frequency synthesizer, based on difference-frequency generation, is demonstrated at 3 micron. By mixing a near-IR optical frequency synthesizer (OFS) and a tunable continuous-wave laser in a periodically-poled lithium niobate crystal, a new comb is created from 2.9 to 3.5 micron (in 180-nm-wide spans) with a 100-MHz mode spacing. By phase-locking the pump laser to the near-IR OFS, the mid-IR comb is directly linked to the Cs primary standard via a global positioning system- (GPS-) time receiver. Then, the compactness of our fiber-based set-up opens real perspectives for the realization of transportable mid-IR frequency standards.
Source: NEW JOURNAL OF PHYSICS, vol. 8, pp. 262-269
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@article{oai:it.cnr:prodotti:57852,
title = {Mid-infrared fibre-based optical comb},
author = {Maddaloni P and Malara P and Gagliardi G and De Natale P},
doi = {10.1088/1367-2630/8/11/262},
year = {2006}
}
