Evanescent-wave comb spectroscopy of liquids with strongly dispersive optical fiber cavities
Authors: Avino S., Giorgini A., Salza M., Fabian M., Gagliardi G., De Natale P.
Autors Affiliation: Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica (INO), via Campi Flegrei, 34-Comprensorio A. Olivetti, Pozzuoli, Naples 80078, Italy; Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica (INO) Largo E. Fermi 6, I-50125 Firenze, Italy
Abstract: We demonstrate evanescent-wave fiber cavity-enhanced spectroscopy in the liquid phase using a near-infrared frequency comb. Exploiting strong fiber-dispersion effects, we show that liquid absorption spectra can be recorded without any external dispersive element. The fiber cavity is used both as sensor and spectrometer. The resonance modes are frequency locked to the comb teeth while the cavity photon lifetime is measured over 155 nm, from 1515 nm to 1670 nm, where absorption bands of liquid polyamines are detected as a proof of concept. Our fiber spectrometer lends itself to in situ, real-time chemical analysis in environmental monitoring, biomedical assays, and micro-opto-fluidic systems. (C) 2013 AIP Publishing LLC.
Journal/Review: APPLIED PHYSICS LETTERS
Volume: 102 (20) Pages from: 201116 to: 201116
More Information: The experimental work was funded by CNR with Project No. DG.RSTL.111.003 and MIUR with Progetto Operativo Nazionale (PON), PON01_01525-MONICA. M.F. thanks CNR \”short-term mobility\” program that supported his visit at CNR-INO. The authors are grateful to B. Patrizi and S. Mackenzie for helpful discussions.KeyWords: Cavity enhanced spectroscopy; Cavity photons; Dispersive elements; Environmental Monitoring; Frequency combs; Optical fiber cavity; Proof of concept; Resonance mode, Assays; Dispersion (waves); Fibers; Optical fiber communication; Optical fibers; Spectrometers, LiquidsDOI: 10.1063/1.4807680Citations: 11data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2020-01-19References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here