Dr. Gianluca Galzerano Profile

Dr. Gianluca Galzerano

at IFN-CNR

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Author

Publications (9)

Proceedings Article | 12 March 2024 Poster + Paper

Near-IR and Mid-IR wave propagation through patchy fog

E. Verdugo, L. Luini, C. Riva, G. Galzerano, L. Resteghini, L. da Silva Mello, R. Nebuloni

Proceedings Volume 12877, 128771J (2024) https://doi.org/10.1117/12.2692324

KEYWORDS: Free space optics, Visibility through fog, Visibility, Mid infrared, Data modeling, Signal attenuation, Attenuation, Atmospheric propagation, Wave propagation, Near infrared

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Proceedings Article | 17 May 2018 Presentation + Paper

Global optimization via evolutionary approach of a Dy3+:ZBLAN fiber amplifier for MID-IR applications

Mario Christian Falconi, Dario Laneve, Caterina Clemente, Dean Gurban, Toney Teddy Fernandez, Gianluca Galzerano, Francesco Prudenzano

Proceedings Volume 10683, 106830L (2018) https://doi.org/10.1117/12.2306473

KEYWORDS: Mid-IR, Fiber amplifiers, Optical amplifiers, ZBLAN, Dysprosium, Particle swarm optimization, Glasses, Optical fibers

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Proceedings Article | 9 May 2018 Paper

Performance evaluation of a TDLAS system for carbon dioxide isotopic ratio measurement in human breath

A. Ghetti, L. Cocola, G. Tondello, G. Galzerano, L. Poletto

Proceedings Volume 10680, 106800U (2018) https://doi.org/10.1117/12.2307178

KEYWORDS: Absorption, Signal detection, Absorption spectroscopy, Spectroscopy, Vertical cavity surface emitting lasers, Urea, Absorbance, Sensors, Modulation

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Measurement of carbon dioxide isotopic ratio on a gas sample through Tunable Diode Laser Absorption Spectroscopy over the 2000nm band is a task that poses different kinds of challenges depending on the required resolution or stability. With the particular application of an instrument for the analysis of human breath samples for the diagnosis of Helicobacter Pylori in mind, the performances of such a system have been investigated.

This measurement has to performed before and after ingestion of a test meal and an accuracy within a few parts per mille needs to be reached for a new instrument to be considered as an alternative to the other, more complex and expensive techniques currently used as a diagnostic test.

The considered instrument is based on a 29m Herriott type multi pass cell, direct absorption setup with a VCSEL source and piezoelectric fringe dithering. Effects of temperature and pressure of the sample on line cross sections and broadening are discussed.

The use of a beam splitter and a second photodetector for a live background signal acquisition and spectra normalization was considered and tested against a simpler approach based on only one channel and using more complex fitting techniques to extract the background waveform from the absorption signal itself. For each case, an evaluation of the obtainable performance with different measurement and/or fitting algorithms is presented.

The work has been done with the ultimate goal of measuring small (0.1 liters) samples collected from exhaled breath (usually saturated in water vapor and containing 4 to 10 vol. % carbon dioxide) without any preprocessing other than lowering the measurement cell pressure; for this reason particular attention to isotope ratio measurement stability against variable sample concentration has been put. At the desired accuracy levels, even the differences in collisional broadening coefficients due to gas mixture composition are non negligible; temperature effects can be neglected only by considering proper line pairs for the ratio evaluation.

The current setup shows a resolution of about 0.2% on the δ¹³CO₂ isotopic ratio measurement around the ambient level with a day-to-day reproducibility better than 1.5% on the single channel approach.

Proceedings Article | 15 March 2013 Paper

Precision mid-infrared frequency combs and spectroscopic applications

D. Gatti, A. Castrillo, A. Gambetta, T. Sala, G. Galzerano, P. Laporta, L. Gianfrani, M. Marangoni

Proceedings Volume 8604, 86040O (2013) https://doi.org/10.1117/12.2008264

KEYWORDS: Quantum cascade lasers, Spectroscopy, Absorption, Carbon dioxide, Near infrared, Frequency combs, Terahertz radiation, Mid-IR, Oscillators, Carbon dioxide lasers

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Proceedings Article | 20 February 2007 Paper

Advanced waveguide lasers fabricated by femtosecond laser writing in an Er:Yb-doped phosphate glass

Giuseppe Della Valle, Roberto Osellame, Stefano Taccheo, Nicola Chiodo, Gianluca Galzerano, Giulio Cerullo, Paolo Laporta, Roberta Ramponi, Uwe Morgner, Aleksey Rozhin, Vittorio Scardaci, Andrea Ferrari

Proceedings Volume 6469, 64690J (2007) https://doi.org/10.1117/12.700458

KEYWORDS: Waveguide lasers, Mode locking, Waveguides, Femtosecond phenomena, Fiber Bragg gratings, Fiber lasers, Glasses, Pulsed laser operation, Laser applications, Picosecond phenomena

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Proceedings Article | 25 April 2006 Paper

Group delay control of picosecond optical pulses in superstructured fiber Bragg gratings

D. Janner, D. Gatti, G. Galzerano, G. Della Valle, P. Laporta, S. Longhi

Proceedings Volume 6187, 61870A (2006) https://doi.org/10.1117/12.664832

KEYWORDS: Picosecond phenomena, Fiber Bragg gratings, Dispersion, Optical communications, Modulation, Optical design, Refractive index, Distortion, Wave propagation, Modulators

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Proceedings Article | 12 October 2005 Paper

Novel solid state lasers for Lidar applications at 2 µm

G. Della Valle, G. Galzerano, A. Toncelli, M. Tonelli, P. Laporta

Proceedings Volume 5958, 59581H (2005) https://doi.org/10.1117/12.619930

KEYWORDS: Crystals, Holmium, Laser crystals, Thulium, LIDAR, Solid state lasers, Fluorine, Luminescence, Mirrors, Absorption

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Proceedings Article | 29 June 2001 Paper

Frequency stabilization of DBR diode laser against Cs absorption lines at 852 nm using the modulation transfer method

Fabrizio Bertinetto, Paolo Cordiale, Gianluca Galzerano, Elio Bava

Proceedings Volume 4430, (2001) https://doi.org/10.1117/12.432844

KEYWORDS: Modulation, Laser stabilization, Absorption, Cesium, Semiconductor lasers, Spectroscopy, Signal to noise ratio, Laser beam diagnostics, Polarization, Distributed Bragg reflectors

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Proceedings Article | 3 May 2001 Paper

Toward a 1.54 um frequency standard with Er-Yb (13C2H2)

Gianluca Galzerano, Cesare Svelto, Atsushi Onae, Elio Bava

Proceedings Volume 4269, (2001) https://doi.org/10.1117/12.424475

KEYWORDS: Fabry–Perot interferometers, Spectroscopy, Semiconductor lasers, Absorption, Ferroelectric materials, Resonators, Laser resonators, Laser development, Polarization, Signal detection

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Showing 5 of 9 publications

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