Mid-infrared digital holography and holographic interferometry with a tunable quantum cascade laser
Year: 2014
Authors: Ravaro M., Locatelli M., Pugliese E., Di Leo I., Siciliani de Cumis M., D’Amato F., Poggi P.,
Consolino L., Meucci R., Ferraro P., De Natale P.
Autors Affiliation: INO, Istituto Nazionale di Ottica—CNR, Largo E. Fermi 6, Firenze I-50125, Italy:
LENS, European Laboratory for NonLinear Spectroscopy, Via N. Carrara 1, Sesto Fiorentino (FI) I-50019, Italy;
INO, Istituto Nazionale di Ottica—CNR—Sezione di Napoli, Via Campi Flegrei, 34 80078 Pozzuoli (Napoli), Italy
Abstract: Mid-infrared digital holography based on CO2 lasers has proven to be a powerful coherent imaging technique due to reduced sensitivity to mechanical vibrations, increased field of view, high optical power, and possible vision through scattering media, e.g., smoke. Here we demonstrate a similar and more compact holographic system based on an external cavity quantum cascade laser emitting at 8 mu m. Such a setup, which includes a highly sensitive microbolometric camera, allows the acquisition of speckle holograms of scattering objects, which can be processed in real time. In addition, by exploiting the broad laser tunability, we can acquire holograms at different wavelengths, from which we extract phase images not subjected to phase wrapping, at synthetic wavelengths ranging from hundreds of micrometers to several millimeters. (C) 2014 Optical Society of America
Journal/Review: OPTICS LETTERS
Volume: 39 (16) Pages from: 4843 to: 4846
More Information: This work was partly supported by the Italian Ministry of Education, University and Research (MIUR) through the program \”FIRB-Futuro in Ricerca 2010\” RBFR10LULP.KeyWords: Carbon dioxide; Computer generated holography; Holographic interferometry; Imaging techniques; Infrared devices; Quantum cascade lasers; Vibrations (mechanical); Coherent scattering; Computer generated holography; Holographic interferometry; Holography; Imaging techniques; Infrared devices; Laser recording; Quantum cascade lasers; Semiconductor lasers; Vibrations (mechanical), Digital holography; High optical power; Holographic system; Laser tunability; Reduced sensitivity; Scattering media; Scattering objects; Synthetic wavelength, Holograms; HologramsDOI: 10.1364/OL.39.004843ImpactFactor: 3.292Citations: 18data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-12-08References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here