http://www.cnr.it/ontology/cnr/individuo/prodotto/ID181901

Frequency-comb-assisted mid-infrared spectroscopy (Contributo in atti di convegno)

Type

Prodotto della ricerca (Classe)
Contributo in atti di convegno (Classe)

Label

Frequency-comb-assisted mid-infrared spectroscopy (Contributo in atti di convegno) (literal)

Anno

2008-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1142/9789812813206_0007 (literal)

Alternative label

P. De Natale; D. Mazzotti; G. Giusfredi; S. Bartalini; P. Cancio; P. Maddaloni; P. Malara; G. Gagliardi; I. Galli; S. Borri (2008)
Frequency-comb-assisted mid-infrared spectroscopy
in XVIII International Conference on Laser Spectroscopy (ICOLS 2007)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

P. De Natale; D. Mazzotti; G. Giusfredi; S. Bartalini; P. Cancio; P. Maddaloni; P. Malara; G. Gagliardi; I. Galli; S. Borri (literal)

Pagina inizio

75 (literal)

Pagina fine

86 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume

Laser Spectroscopy - Proceedings of the XVIII International Conference (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

12 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

Istituto Nazionale di Ottica Applicata (INOA) - CNR European Laboratory for Non-linear Spectroscopy (LENS) Dipartimento di Fisica, Università Firenze (literal)

Titolo

Frequency-comb-assisted mid-infrared spectroscopy (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn

978-981-281-319-0 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume

L. Hollberg; J. Bergquist; M. Kasevich (literal)

Abstract

A new class of IR coherent sources and IR frequency combs, that combine optical frequency-comb synthesizers (OFCSs) and optical parametric up/down-conversions, is already available and still progressing at a very fast pace. Peculiar features for IR radiation produced by difference-frequency-generation (DFG) set-ups or quantum-cascade lasers (QCLs) can he achieved when they are phase and frequency controlled by the OFCS. Indeed, their frequency is accurately known against the primary frequency standard and their linewidth is highly narrowed thanks to the transferred OFCS coherence even for laser sources whose frequencies are several THz apart. These features, together with their wide tunability and their small intensity fluctuations (down to the shot-noise limit), make these IR sources well suited for a wide range of applications, in particular for spectroscopic ones. Very high sensitivity for trace-gas detection has been achieved when combined with enhancement absorption techniques as high-finesse Fabry-Perot cavities or multipass cells. Moreover, the large number of fundamental ro-vibrational transitions of many stable and transient molecular species accessible with this spectrometers, make them particularly attractive for environmental applications, especially considering their compactness and ruggedness when a fiber-based set-up is chosen. Their unique capabilities in terms of achievable precision for absolute frequency measurements can he used to create a \"natural\" grid of secondary frequency standards of IR molecular absorptions, frequency measured with these high-resolution spectrometers. More important, we have directly generated an IR frequency comb around 3 ?m by DFG Conversion of an OFCS. The generated comb can be employed both as a frequency ruler and a direct source for molecular spectroscopy. (literal)

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