Dr. Sergio M. De Nicola Profile

Dr. Sergio M. De Nicola

Senior Researcher at CNR-SPIN

SPIE Involvement:

Author

Publications (71)

Proceedings Article | 21 November 2017 Open Access

Holografic microscope able to generate an image with extended focus without mechanical movement

P. Ferraro, S. Grilli, P. De Natale, D. Alfieri, G. Pierattini, A. Finizio, S. De Nicola, G. Coppola, V. Striano

Proceedings Volume 10567, 1056741 (2017) https://doi.org/10.1117/12.2308142

KEYWORDS: Microscopes, 3D image reconstruction, Digital holography, Holograms, Holography, Digital imaging, Microelectromechanical systems, Image processing, 3D image processing, Microscopy

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Proceedings Article | 23 May 2013 Paper

Pyroelectric manipulation of liquid crystal droplets

F. Merola, S. Grilli, S. Coppola, V. Vespini, S. De Nicola, P. Maddalena, C. Carfagna, P. Ferraro

Proceedings Volume 8792, 87920V (2013) https://doi.org/10.1117/12.2020555

KEYWORDS: Liquid crystals, Liquids, Lithium niobate, Crystals, Optical lithography, Microlens array, Modulation, Polymers, Molecules, Pyroelectric liquid crystals

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Proceedings Article | 27 May 2011 Paper

Optical characterization of phase gratings written by a UV femtosecond laser in PMMA

S. De Nicola, S. Abdalah, K. Al-Naimee, A. Geltrude, M. Locatelli, R. Meucci, A. Baum, W. Perrie, P. Scully, A. Taranu, F. Arecchi

Proceedings Volume 8082, 808227 (2011) https://doi.org/10.1117/12.889429

KEYWORDS: Refractive index, Polymethylmethacrylate, Femtosecond phenomena, Reconstruction algorithms, Ultraviolet radiation, Digital holography, Interferometry, Diffraction, Holograms, Microscopes

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Proceedings Article | 17 June 2009 Paper

Digital holographic characterization of liquid microlenses array fabricated in electrode-less configuration

L. Miccio, V. Vespini, S. Grilli, M. Paturzo, A. Finizio, S. De Nicola, P. Ferraro

Proceedings Volume 7389, 73891I (2009) https://doi.org/10.1117/12.828034

KEYWORDS: Liquids, Lenses, Microlens, Microlens array, Digital holography, Crystals, Polarization, Monochromatic aberrations, Electrodes, Interferometry

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Proceedings Article | 20 May 2008 Paper

Digital holography in combination with diffraction grating to get super-resolution

M. Paturzo, F. Merola, S. Grilli, S. De Nicola, P. Ferraro

Proceedings Volume 6995, 699505 (2008) https://doi.org/10.1117/12.782111

KEYWORDS: Diffraction gratings, Digital holography, 3D image reconstruction, Holograms, Charge-coupled devices, Super resolution, Diffraction, Holography, Crystals, Lithium niobate

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Proceedings Article | 25 April 2008 Paper

Phase map retrieval in digital holography: avoiding the under-sampling effect by a lateral shear approach

P. Ferraro, C. Del Core, L. Miccio, S. Grilli, S. De Nicola, A. Finizio, G. Coppola

Proceedings Volume 6995, 699506 (2008) https://doi.org/10.1117/12.782780

KEYWORDS: 3D image reconstruction, Microelectromechanical systems, Holograms, Digital holography, Wavefronts, Charge-coupled devices, Spatial resolution, Interferometry, Image resolution, Image processing

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Proceedings Article | 30 October 2007 Paper

Imaging and phase measurements of 3D objects at 10.6 microns by digital holography

Pietro Ferraro, Simonetta Grilli, Lisa Miccio, Paul Buahbassuah, Riccardo Meucci, Sergio De Nicola, F. Tito Arecchi

Proceedings Volume 6736, 673612 (2007) https://doi.org/10.1117/12.746239

KEYWORDS: Digital holography, Holograms, 3D image reconstruction, Gas lasers, Carbon monoxide, Sensors, Phase measurement, 3D image processing, Digital recording, Infrared sensors

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Proceedings Article | 18 July 2007 Paper

Lipid particle detection by means digital holography and lateral shear interferometry

L. Miccio, S. Grilli, A. Finizio, S. De Nicola, L. De Petrocellis, P. Ferraro

Proceedings Volume 6631, 66310G (2007) https://doi.org/10.1117/12.729465

KEYWORDS: Digital holography, Holograms, Particles, Optical aberrations, 3D image reconstruction, Microscopes, Phase contrast, Interferometry, Holography, Microscopy

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Digital Holography in microscope configuration thanks to the numerical reconstruction procedure is a flexible and useful tool for analysis of biological material. We present the investigation of lipid particles growth in in-vitro mouse cell using a Digital Holographic Microscopy (DHM) employed in combination with Lateral Shear Interferometry (LSI). The optical setup is based on a Mach-Zehnder interferometer in transmission geometry. The sample cell is placed in one interferometer arm while the other one is used as a reference beam. By means of the Rayleigh-Sommerfield integral is possible to retrieve the complex object field and then to calculate the amplitude and phase of the laser light transmitted by the sample. Traditional microscopy allows to obtain amplitude contrast image only, DH, instead, enables to calculate the phase map of the complex wave that is simply related to the optical phase difference (OPD) experienced by the light when it is transmitted through the object. In this way it is possible to obtain phase contrast image that is very useful for biological materials that often present low amplitude contrast for quantitative amplitude image. The main difficulty of this technique is to remove the optical aberrations produced by the optical setup components. Several methods have been proposed, such as subtraction of a reference phase map (without sample) or numerical multiplication of a parametric lens. We propose a fast and effective solution of this problem based on LSI. We digitally introduce a lateral shear of one pixel in x and y directions calculating the phase difference ΔØ_x,y, between the actual phase map and its sheared replica in both directions. ΔØ_x,y include a linear term due to defocus aberration and the object phase difference. The linear term can be easily eliminated and sample phase map retrieved by numerical integration. This technique allows to obtain the correct phase contrast image removing optical aberration, avoiding unwrapping problems.

Proceedings Article | 18 June 2007 Paper

Lateral shear and digital holographic microscopy to check dynamic behaviour of biological cell

Lisa Miccio, Simonetta Grilli, Sergio De Nicola, Andrea Finizio, Pietro Ferraro

Proceedings Volume 6617, 661706 (2007) https://doi.org/10.1117/12.726153

KEYWORDS: Digital holography, Holograms, Microscopy, Holography, Microscopes, Optical aberrations, Wavefronts, Holographic interferometry, Interferometers, Beam splitters

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Proceedings Article | 16 May 2007 Paper

Tunable electro-optical lithium niobate phase array for wavefront modulators

M. Paturzo, P. Ferraro, S. De Nicola, P. De Natale, G. Pierattini

Proceedings Volume 6584, 65840G (2007) https://doi.org/10.1117/12.724206

KEYWORDS: Electro optics, Crystals, Lithium niobate, Fiber optic illuminators, Photomasks, Modulators, Wavefronts, Electrodes, Near field optics, Image processing

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Proceedings Article | 1 March 2007 Paper

Spatially varying absorptive or scattering inclusions in a diffusive slab: a perturbation approach to the time-resolved transmittance

Rosario Esposito, Sergio De Nicola, Maria Lepore

Proceedings Volume 6434, 64342D (2007) https://doi.org/10.1117/12.708133

KEYWORDS: Scattering, Transmittance, Diffusion, Finite element methods, Tissues, Absorption, Light scattering, Optical properties, Near infrared, Breast

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Proceedings Article | 15 September 2006 Paper

Measurement of thermal expansion and thermo-optic coefficients in LiNbO₃ and KTiOPO₄ crystals using dual-interferometric techniques

Felice Pignatiello, Maurizio De Rosa, Pietro Ferraro, Simonetta Grilli, Sergio De Nicola, Ady Arie, Paolo De Natale

Proceedings Volume 6341, 63412H (2006) https://doi.org/10.1117/12.695504

KEYWORDS: Crystals, Thermal optics, Temperature metrology, Refractive index, Interferometers, Laser crystals, Wavefronts, Ferroelectric materials, Nonlinear crystals, Fringe analysis

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Proceedings Article | 15 September 2006 Paper

Improvement of the reconstruction algorithm for extended focus image of MEMS by digital holography

Valerio Striano, Giuseppe Coppola, Pietro Ferraro, Domenico Alfieri, Simonetta Grilli, Sergio De Nicola, Andrea Finizio, Giovanni Pierattini

Proceedings Volume 6341, 63411T (2006) https://doi.org/10.1117/12.695465

KEYWORDS: 3D image reconstruction, Digital holography, Microelectromechanical systems, Reconstruction algorithms, Holography, Holograms, Microscopy, Microscopes, Digital imaging, Optical microscopes

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Proceedings Article | 15 September 2006 Paper

Combining lateral shear interferometry with digital holography for quantitative phase microscopy

P. Ferraro, D. Alfieri, S. De Nicola, L. De Petrocellis, A. Finizio, G. Pierattini

Proceedings Volume 6341, 634115 (2006) https://doi.org/10.1117/12.695355

KEYWORDS: Digital holography, Wavefronts, Interferometry, Microscopy, 3D image reconstruction, Image processing, Holograms, Microscopes, Digital imaging, Optical testing

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Proceedings Article | 30 August 2006 Paper

Reconstruction of digital holograms on tilted planes

S. De Nicola, A. Finizio, G. Pierattini, D. Alfieri, P. Ferraro

Proceedings Volume 6311, 63110K (2006) https://doi.org/10.1117/12.683859

KEYWORDS: Digital holography, Holograms, 3D image reconstruction, Reconstruction algorithms, Holography, Spatial frequencies, Fourier transforms, Tomography, Image restoration, Digital recording

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Proceedings Article | 14 August 2006 Paper

Compensation of chromatic aberration in multiwavelength digital holographic investigation of microstructures

P. Ferraro, S. Grilli, D. Alfieri, S. De Nicola, A. Finizio, G. Pierattini

Proceedings Volume 6293, 629304 (2006) https://doi.org/10.1117/12.683858

KEYWORDS: Holograms, Digital holography, 3D image reconstruction, Chromatic aberrations, Holography, Microscopes, Holographic interferometry, Wavefronts, Image fusion, Charge-coupled devices

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Proceedings Article | 28 April 2006 Paper

Interferometric measurement of thermal expansion coefficients and thermo-optic coefficients in ferroelectric crystals

F. Pignatiello, M. De Rosa, P. Ferraro, A. Arie, S. Grilli, L. Sansone, S. De Nicola, P. De Natale

Proceedings Volume 6188, 61880O (2006) https://doi.org/10.1117/12.664037

KEYWORDS: Crystals, Temperature metrology, Thermal optics, Refractive index, Wavefronts, Interferometry, Laser crystals, Interferometers, Fringe analysis, Diffraction gratings

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Proceedings Article | 28 April 2006 Paper

Interferometric measurement of thickness of silicon nitride layer in bi-morph silicon MEMS

P. Ferraro, M. Paturzo, S. De Nicola, A. Finizio, G. Pierattini, G. Coppola, M. Iodice, V. Striano, M. Gagliardi

Proceedings Volume 6188, 61880R (2006) https://doi.org/10.1117/12.664096

KEYWORDS: Silicon, Digital holography, Microelectromechanical systems, Interferometry, Data modeling, Microscopes, Holography, 3D image reconstruction, Sensors, Holograms

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Proceedings Article | 18 April 2006 Paper

Engineering and characterization of ferroelectric microstructures for photonic crystal applications

Simonetta Grilli, Pietro Ferraro, Lucia Sansone, Melania Paturzo, Sergio De Nicola, Andrea Finizio, Giovanni Pierattini, Paolo De Natale

Proceedings Volume 6182, 618204 (2006) https://doi.org/10.1117/12.683063

KEYWORDS: Crystals, Photonic crystals, Atomic force microscopy, Optical microscopes, Etching, Wet etching, Electro optics, Waveguides, Photonic crystal devices, Modulation

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Proceedings Article | 28 February 2006 Paper

3D photonic devices at telecom wavelengths fabricated by a femtosecond oscillator

V. Maselli, R. Osellame, N. Chiodo, G. Cerullo, P. Laporta, P. Ferraro, S. De Nicola, A. Finizio

Proceedings Volume 6108, 61080W (2006) https://doi.org/10.1117/12.644753

KEYWORDS: Waveguides, Glasses, Refractive index, Digital holography, Near field, Oscillators, Objectives, Photonic devices, Femtosecond phenomena, Fabrication

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Proceedings Article | 16 November 2005 Paper

How to extend depth of focus in 3D imaging by digital holography

P. Ferraro, S. Grilli, G. Coppola, B. Javidi, S. De Nicola

Proceedings Volume 6016, 60160I (2005) https://doi.org/10.1117/12.632428

KEYWORDS: 3D image reconstruction, Digital holography, Microscopes, Holograms, Microelectromechanical systems, Holography, Digital imaging, Image processing, Microscopy, 3D image processing

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Proceedings Article | 10 September 2005 Paper

Coherent imaging by digital holographic microscopy: focusing capabilities and depth of focus in the reconstructed images

P. Ferraro, S. Grilli, D. Alfieri, S. De Nicola, A. Finizio, G. Pierattini, B. Javidi, G. Coppola, V. Striano

Proceedings Volume 5908, 590803 (2005) https://doi.org/10.1117/12.617101

KEYWORDS: Digital holography, Holograms, Microscopes, Holography, 3D image reconstruction, Image processing, Microelectromechanical systems, Microscopy, 3D image processing, Molybdenum

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Proceedings Article | 8 September 2005 Paper

High spatial resolution interferometric analysis of internal field in lithium niobate (LiNbO3)

M. Paturzo, D. Alfieri, S. Grilli, P. Ferraro, M. De Angelis, S. De Nicola, A. Finizio, P. De Natale, G. Pierattini

Proceedings Volume 5911, 591106 (2005) https://doi.org/10.1117/12.617068

KEYWORDS: Lithium niobate, Crystals, Interferometry, Digital holography, Spatial resolution, Lithium, Polarization, Electro optics, Holograms, Niobium

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Proceedings Article | 27 August 2005 Paper

Non-destructive optical system based on digital holographic microscope for quasi real-time characterization of micromechanical shunt switch

Valerio Striano, Giuseppe Coppola, Pietro Ferraro, Domenico Alfieri, Sergio De Nicola, Andrea Finizio, Giovanni Pierattini, Romolo Marcelli, Paolo Mezzanotte

Proceedings Volume 5858, 585815 (2005) https://doi.org/10.1117/12.612746

KEYWORDS: Switches, Bridges, Digital holography, Microelectromechanical systems, Holograms, Dielectrics, Holography, Diffraction, Microscopes, Inspection

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Proceedings Article | 27 August 2005 Paper

Interferometric method for measuring the refractive index profile of optical waveguides directly written in glass substrates by femtosecond laser

P. Ferraro, L. Aiello, S. De Nicola, A. Finizio, R. Osellame, N. Chiodo, V. Maselli, G. Cerullo, P. Laporta

Proceedings Volume 5858, 585804 (2005) https://doi.org/10.1117/12.612889

KEYWORDS: Waveguides, Glasses, Refractive index, Digital holography, Holograms, Femtosecond phenomena, Microscopes, Near field, Objectives, Mirrors

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Proceedings Article | 27 August 2005 Paper

Characterization and engineering of ferroelectric microstructures by interferometric methods

S. Grilli, P. Ferraro, M. Paturzo, D. Alfieri, P. De Natale, M. de Angelis, S. De Nicola, A. Finizio, G. Pierattini

Proceedings Volume 5858, 58580R (2005) https://doi.org/10.1117/12.613016

KEYWORDS: Digital holography, Crystals, Interferometry, Electro optics, Holograms, Lithium niobate, Holography, Semiconducting wafers, Scanning electron microscopy, Etching

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Proceedings Article | 13 June 2005 Paper

Image focusing properties in reconstructing digital holograms

D. Alfieri, G. Coppola, S. DeNicola, P. Ferraro, A. Finizio, S. Grilli, G. Pierattini, V. Striano

Proceedings Volume 5856, (2005) https://doi.org/10.1117/12.612935

KEYWORDS: 3D image reconstruction, Holograms, Digital holography, Image processing, Reconstruction algorithms, Digital recording, Digital imaging, Curium, Charge-coupled devices, Image restoration

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Proceedings Article | 28 April 2005 Paper

A perturbation approach for optical characterization of absorptive inclusions in diffusing media by time-resolved contrast measurements

R. Esposito, S. De Nicola, M. Lepore, I. Delfino, P. Indovina

Proceedings Volume 5693, (2005) https://doi.org/10.1117/12.594469

KEYWORDS: Absorption, Scattering, Transmittance, Optical properties, Diffusion, Geometrical optics, Tissues, Sensors, Finite element methods, Tissue optics

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SPIE Journal Paper | 1 January 2005

Digital holography microscope as tool for microelectromechanical systems characterization and design

Giuseppe Coppola, Mario Iodice, Andrea Finizio, Sergio De Nicola, Giovanni Pierattini, Pietro Ferraro, Carlo Magro, G. Spoto

JM3, Vol. 4, Issue 01, 013012, (January 2005) https://doi.org/10.1117/12.10.1117/1.1857551

KEYWORDS: Microelectromechanical systems, Digital holography, Microscopes, Holograms, Silicon, 3D image reconstruction, Charge-coupled devices, Finite element methods, Wavefronts, Holography

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Proceedings Article | 22 October 2004 Paper

Controlling several image parameters in the digital holographic reconstruction process

Pietro Ferraro, Sergio De Nicola, Andrea Finizio, Giuseppe Coppola, Domenico Alfieri, Lara Aiello, Simonetta Grilli, Giovanni Pierattini

Proceedings Volume 5557, (2004) https://doi.org/10.1117/12.564302

KEYWORDS: 3D image reconstruction, Holograms, Digital holography, Image processing, Microelectromechanical systems, Image resolution, Charge-coupled devices, Holography, Digital recording, Curium

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Proceedings Article | 22 October 2004 Paper

Investigation of internal electric field in LiNbO₃ crystal with two anti-parallel ferroelectric domains by interferometric technique

Melania Paturzo, Domenico Alfieri, Simonetta Grilli, Pietro Ferraro, Marella de Angelis, Sergio De Nicola, Lucia Sansone, Paolo De Natale, Giovanni Pierattini

Proceedings Volume 5560, (2004) https://doi.org/10.1117/12.560643

KEYWORDS: Crystals, Polarization, Digital holography, Phase measurement, Holograms, Interferometry, Electro optics, Interferometers, Lithium, Reflectivity

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Proceedings Article | 10 September 2004 Paper

Recent advancements in digital holographic microscopy and its applications

Pietro Ferraro, Giuseppe Coppola, Domenico Alfieri, Sergio De Nicola, Andrea Finizio, Giovanni Pierattini

Proceedings Volume 5457, (2004) https://doi.org/10.1117/12.554755

KEYWORDS: 3D image reconstruction, Holograms, Digital holography, Microelectromechanical systems, Image processing, Image resolution, Holography, Microscopy, Digital recording, Metrology

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Proceedings Article | 10 September 2004 Paper

A novel interferometric spectrometer obtained by imaging Talbot effect in digital holography

Pietro Ferraro, Giuseppe Coppola, Domenico Alfieri, Sergio De Nicola, Simonetta Grilli, Andrea Finizio, Giovanni Pierattini

Proceedings Volume 5457, (2004) https://doi.org/10.1117/12.545284

KEYWORDS: Holograms, Spectroscopy, Digital holography, Charge-coupled devices, 3D image reconstruction, Laser sources, Fourier transforms, Image processing, Interferometry, Visible radiation

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Proceedings Article | 17 August 2004 Paper

Thickness measurement of thin transparent plates with a broadband wavelength-scanning interferometer

Pasquale Maddaloni, Giuseppe Coppola, Paolo de Natale, Sergio de Nicola, Pietro Ferraro, Mariano Gioffre, Mario Iodice

Proceedings Volume 5458, (2004) https://doi.org/10.1117/12.544955

KEYWORDS: Refractive index, Interferometers, Silicon, Laser sources, Interferometry, Statistical analysis, Silica, Collimation, Fringe analysis, CCD cameras

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Proceedings Article | 17 August 2004 Paper

Digital holographic microscope for thermal characterization of silicon microhotplates for gas sensor

Giuseppe Coppola, Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Piera Maccagnani, Giovanni Pierattini

Proceedings Volume 5458, (2004) https://doi.org/10.1117/12.546016

KEYWORDS: Digital holography, Holograms, 3D image reconstruction, Silicon, Holography, Gas sensors, Microscopes, Resistors, Sensors, Image processing

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Proceedings Article | 2 August 2004 Paper

Real-time phase-contrast analysis of domain switching in lithium niobate by digital holography

Simonetta Grilli, Pietro Ferraro, Marella de Angelis, Sergio De Nicola, Domenico Alfieri, Melania Paturzo, Paolo De Natale, Lucia Sansone, Giovanni Pierattini

Proceedings Volume 5531, (2004) https://doi.org/10.1117/12.560632

KEYWORDS: Digital holography, Electro optics, Switching, Lithium niobate, Interferometry, Refractive index, Polarization, Crystals, Visualization, Holography

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Proceedings Article | 15 March 2004 Paper

Wavefront aberration analysis in two-beam reversal shearing interferometry by elliptical Zernike polynomials

Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Giovanni Pierattini, Simonetta Grilli, Igor Gurov, Vladimir Chugunov

Proceedings Volume 5481, (2004) https://doi.org/10.1117/12.558183

KEYWORDS: Wavefronts, Interferometry, Zernike polynomials, Wavefront aberrations, Optical components, Optical testing, Moire patterns, Charge-coupled devices, Spherical lenses

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Proceedings Article | 23 December 2003 Paper

Testing silicon MEMS structures subjected to thermal loading by digital holography

Pietro Ferraro, Sergio De Nicola, Giuseppe Coppola, Andrea Finizio, Mario Iodice, Carlo Magro, Giovanni Pierattini

Proceedings Volume 5343, (2003) https://doi.org/10.1117/12.524441

KEYWORDS: 3D image reconstruction, Microelectromechanical systems, Holograms, Digital holography, Silicon, Microscopes, Sensors, Phase contrast, Digital recording, Wavefronts

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Proceedings Article | 19 November 2003 Paper

Lateral shearing interferometer for measuring refractive index of silicon

Giuseppe Coppola, Pietro Ferraro, Sergio De Nicola, Mario Iodice

Proceedings Volume 4829, (2003) https://doi.org/10.1117/12.526895

KEYWORDS: Silicon, Refractive index, Shearing interferometers, Interferometry, Signal detection, Signal analyzers, Photodiodes, Optoelectronics, Modulation, Infrared lasers

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Proceedings Article | 19 November 2003 Paper

Interferometric analysis of self-phase-modulation at 10.6µm in a nematic liquid crystal

Enrico Allaria, Stefano Brugioni, Sergio De Nicola, Pietro Ferraro, Simonetta Grilli, Riccardo Meucci, Giovanni Pierattini

Proceedings Volume 4829, (2003) https://doi.org/10.1117/12.530779

KEYWORDS: Liquid crystals, Interferometry, Diffraction, Fringe analysis, Mach-Zehnder interferometers, Carbon dioxide lasers, Modulation, Refractive index, Crystals, Scanning probe microscopy

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Proceedings Article | 19 November 2003 Paper

Investigation on overpoled lithium niobate patterned crystal

Simonetta Grilli, Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Paolo De Natale, Mario Iodice, Giovanni Pierattini

Proceedings Volume 4829, (2003) https://doi.org/10.1117/12.529994

KEYWORDS: Crystals, Lithium niobate, Liquid crystals, Electrodes, Etching, Profilometers, Wafer-level optics, Polishing, Liquids, Photoresist materials

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Proceedings Article | 3 October 2003 Paper

Investigation of silicon MEMS structures subjected to thermal loading by digital holography

Pietro Ferraro, Sergio De Nicola, Andrea Finizio, Giuseppe Coppola, Mario Iodice, Simonetta Grilli, Carlo Magro, Giovanni Pierattini

Proceedings Volume 5145, (2003) https://doi.org/10.1117/12.500657

KEYWORDS: Microelectromechanical systems, Holograms, Digital holography, Inspection, 3D image reconstruction, Bridges, Silicon, Charge-coupled devices, Interferometry, Holography

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Proceedings Article | 8 July 2003 Paper

Mach-Zehnder interferometric system for measuring the refractive indices of uniaxial crystals

Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Paolo De Natale, Simonetta Grilli, Giovanni Pierattini

Proceedings Volume 5036, (2003) https://doi.org/10.1117/12.498644

KEYWORDS: Crystals, Refractive index, Fringe analysis, Polarization, Phase measurement, Interferometry, Lithium niobate, Nonlinear crystals, Phase shifts, Phase retrieval

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Proceedings Article | 8 July 2003 Paper

Infrared digital holography

Enrico Allaria, Stefano Brugioni, Sergio De Nicola, Pietro Ferraro, Simonetta Grilli, Riccardo Meucci

Proceedings Volume 5036, (2003) https://doi.org/10.1117/12.498515

KEYWORDS: Digital holography, Holograms, Infrared radiation, 3D image reconstruction, Sensors, CCD image sensors, Spatial resolution, Digital recording, Holography, Holographic interferometry

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SPIE Journal Paper | 1 June 2003

Experimental demonstration of the longitudinal image shift in digital holography

Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Simonetta Grilli, Giovanni Pierattini

OE, Vol. 42, Issue 06, (June 2003) https://doi.org/10.1117/12.10.1117/1.1569496

KEYWORDS: Holograms, Charge-coupled devices, Digital holography, 3D image reconstruction, Interferometers, Spherical lenses, Digital imaging, Wavefronts, Holography, Holographic interferometry

Proceedings Article | 30 May 2003 Paper

Interferometric analysis of a lithium niobate with engineering reversed domains

Marella de Angelis, Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Simonetta Grilli, Giovanni Pierattini

Proceedings Volume 5144, (2003) https://doi.org/10.1117/12.501840

KEYWORDS: Crystals, Digital holography, Interferometry, Lithium niobate, Interferometers, Reflectivity, Diffraction, Holographic interferometry, Semiconducting wafers, Interfaces

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Proceedings Article | 27 May 2003 Paper

Evaluation of residual stress in MEMS structures by digital holography

Giuseppe Coppola, Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Simonetta Grilli, Mario Iodice, Carlo Magro, Giovanni Pierattini

Proceedings Volume 4933, (2003) https://doi.org/10.1117/12.516637

KEYWORDS: Digital holography, Microelectromechanical systems, Holograms, Phase contrast, Silicon, Holography, Microscopes, Digital recording, Charge-coupled devices, Holographic interferometry

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Proceedings Article | 3 April 2003 Paper

Electro-optically controlled switching and deflection in domain-engineered LiNbO₃

Mario Iodice, Giuseppe Coppola, Pietro Ferraro, Sergio De Nicola, Simonetta Grilli, Davide Mazzotti, Paolo De Natale

Proceedings Volume 4944, (2003) https://doi.org/10.1117/12.472010

KEYWORDS: Interfaces, Switching, Electro optics, Crystals, Refractive index, Switches, Lithium niobate, Polarization, Liquids, Laser crystals

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Proceedings Article | 3 April 2003 Paper

Investigation on poling of lithium niobate patterned by interference lithography

Simonetta Grilli, Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Paolo De Natale, Giovanni Pierattini, M. Chiarini

Proceedings Volume 4944, (2003) https://doi.org/10.1117/12.472011

KEYWORDS: Crystals, Lithography, Photoresist materials, Electrodes, Lithium niobate, Fringe analysis, Optical lithography, Dielectrics, Interferometry, Liquids

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Proceedings Article | 3 April 2003 Paper

Characterization of microstructures in lithium niobate crystals by digital holography

Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Simonetta Grilli, Giuseppe Coppola, Mario Iodice, Giovanni Pierattini, M. Chiarini

Proceedings Volume 4944, (2003) https://doi.org/10.1117/12.472445

KEYWORDS: Digital holography, Holograms, 3D image reconstruction, Etching, Lithium niobate, Wavefronts, Crystals, Holography, Charge-coupled devices, Nonlinear optics

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Proceedings Article | 25 March 2003 Paper

Characterization of MEMS structures by microscopic digital holography

Giuseppe Coppola, Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Simonetta Grilli, Mario Iodice, Carlo Magro, Giovanni Pierattini

Proceedings Volume 4945, (2003) https://doi.org/10.1117/12.471989

KEYWORDS: Holograms, Digital holography, 3D image reconstruction, Microelectromechanical systems, Wavefronts, Holography, Microscopes, Inspection, Bridges, Charge-coupled devices

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Proceedings Article | 11 March 2003 Paper

Simple interferometric method for measuring severally the refractive index and the thickness of transparent plates

Giuseppe Coppola, Pietro Ferraro, Mario Iodice, Sergio de Nicola

Proceedings Volume 4946, (2003) https://doi.org/10.1117/12.472045

KEYWORDS: Refractive index, Interferometry, Silicon, Interferometers, Crystals, Signal detection, Lithium niobate, Semiconductor lasers, Neodymium, Phase shifts

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Proceedings Article | 18 February 2002 Paper

Phase-shifting digital holography with compensation of aberrations

Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Simonetta Grilli, Riccardo Meucci

Proceedings Volume 4627, (2002) https://doi.org/10.1117/12.456266

KEYWORDS: 3D image reconstruction, Holograms, Digital holography, Holography, Wavefronts, Digital imaging, Reconstruction algorithms, Image quality, CCD cameras, Phase shifts

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Proceedings Article | 23 October 2001 Paper

Two-beam shearing interferometric method for testing a conical lens

Marella De Angelis, Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Giovanni Pierattini

Proceedings Volume 4398, (2001) https://doi.org/10.1117/12.445555

KEYWORDS: Axicons, Interferometry, Wavefronts, Optical components, Optical testing, Spherical lenses, Fringe analysis, Shearing interferometers, Interferometers, Laser beam diagnostics

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Proceedings Article | 3 October 2001 Paper

Digital holographic interferometry for characterization of transparent materials

Pietro Ferraro, Sergio De Nicola, Andrea Finizio, Simonetta Grilli, Giovanni Pierattini

Proceedings Volume 4399, (2001) https://doi.org/10.1117/12.445580

KEYWORDS: Digital holography, Holograms, Refractive index, Charge-coupled devices, Holographic interferometry, Beam splitters, Holography, 3D image reconstruction, Image processing, Digital recording

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Proceedings Article | 2 March 2001 Paper

Noise-immune interference fringe analysis by modification of local intensity histogram and 2D Fourier transform method

Sergio De Nicola, Pietro Ferraro, Igor Gurov, R. Koviazin, Mikhail Volkov

Proceedings Volume 4353, (2001) https://doi.org/10.1117/12.417750

KEYWORDS: Fringe analysis, Moire patterns, Fourier transforms, Interferometry, Nonlinear filtering, Composites, Convolution, Carbon, Electronic filtering, Visibility

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Proceedings Article | 29 December 1999 Paper

Fourier transform method of fringe analysis for moire interferometry

Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Giovanni Pierattini

Proceedings Volume 4016, (1999) https://doi.org/10.1117/12.373662

KEYWORDS: Fringe analysis, Moire patterns, Composites, Fourier transforms, Interferometry, Diffraction gratings, Mirrors, Deflectometry, Optical filters, Modulation

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Proceedings Article | 29 December 1999 Paper

Interferometric measurement of thermo-optic coefficients of transparent materials

Sergio De Nicola, Andrea Finizio, Pietro Ferraro, Giovanni Pierattini

Proceedings Volume 4016, (1999) https://doi.org/10.1117/12.373648

KEYWORDS: Fringe analysis, Thermal optics, Interferometry, Temperature metrology, Glasses, Diffraction gratings, Thermography, Phase retrieval, Refractive index, Spatial frequencies

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Proceedings Article | 29 December 1999 Paper

Fourier-transform-based interferometric technique for measuring the elastic anisotropy of a dye-doped liquid crystal

Domenico De Feo, Sergio De Nicola, Pietro Ferraro, Pasqualino Maddalena, Domenico Paparo, Giovanni Pierattini

Proceedings Volume 4016, (1999) https://doi.org/10.1117/12.373673

KEYWORDS: Liquid crystals, Fringe analysis, Anisotropy, Interferometry, Interferometers, Spatial resolution, Diffraction gratings, Spatial frequencies, Francium, Fourier transforms

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Proceedings Article | 6 September 1999 Paper

Interferometric method for testing focal lengths using a digital Fourier transform

Marco de Angelis, Sergio De Nicola, P. Ferraro, Andrea Finizio, Thomas Hessler, Giovanni Pierattini

Proceedings Volume 3739, (1999) https://doi.org/10.1117/12.360163

KEYWORDS: Microlens, CCD cameras, Fringe analysis, Interferometry, Lenses, Spatial frequencies, Charge-coupled devices, Diffraction gratings, Optical testing, Diffraction

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Proceedings Article | 17 August 1999 Paper

Fringe analysis of moire interferometry for studying micromechanical behavior of composite materials

Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Giovanni Pierattini, Marella De Angelis

Proceedings Volume 3745, (1999) https://doi.org/10.1117/12.357788

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Proceedings Article | 17 August 1999 Paper

Liquid refractometer based on fringe projection technique

Marco de Angelis, Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Giovanni Pierattini

Proceedings Volume 3745, (1999) https://doi.org/10.1117/12.357807

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Proceedings Article | 15 January 1999 Paper

Time-resolved transmittance for the noninvasive determination of tissue optical properties

Sergio De Nicola, Maria Falco, Maria Lepore

Proceedings Volume 3570, (1999) https://doi.org/10.1117/12.336942

KEYWORDS: Transmittance, Tissue optics, Diffusion, Optical properties, Scattering, Interfaces, Tissues, Light scattering, Biomedical optics, Absorption

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Proceedings Article | 1 January 1998 Paper

Stochastic description of wave propagation in random media

Sergio De Nicola

Proceedings Volume 3194, (1998) https://doi.org/10.1117/12.301087

KEYWORDS: Stochastic processes, Wave propagation, Scattering, Mass attenuation coefficient

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Proceedings Article | 8 December 1997 Open Access

Reflective grating interferometer: a versatile and simple system for education in optics

Sergio De Nicola, Pietro Ferraro, Andrea Finizio, Giovanni Pierattini

Proceedings Volume 3190, (1997) https://doi.org/10.1117/12.294371

KEYWORDS: Interferometers, Reflectivity, Mirrors, Fringe analysis, Wavefronts, Geometrical optics, Diffraction gratings, Interferometry, Monochromatic aberrations, Reflector telescopes

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Proceedings Article | 6 December 1996 Paper

Cubic scattering coefficient in concentration in dense random media

Sergio De Nicola

Proceedings Volume 2925, (1996) https://doi.org/10.1117/12.260840

KEYWORDS: Scattering, Particles, Signal attenuation, Wave propagation, Refractive index, Light scattering, Stochastic processes, Optical spheres, Laser scattering, Multiple scattering

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Proceedings Article | 10 June 1996 Paper

Interaction of laser radiation with Cantor fractal multilayers

Sergio De Nicola

Proceedings Volume 2801, (1996) https://doi.org/10.1117/12.242124

KEYWORDS: Fractal analysis, Electromagnetic radiation, Refractive index, Astatine, Reflectivity, Iterative methods, Analytical research, Modulation, Integrated optics, Geometrical optics

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Proceedings Article | 18 December 1995 Paper

Distributed scatter model for computing diffuse reflectance of light from turid biological media

Sergio De Nicola

Proceedings Volume 2626, (1995) https://doi.org/10.1117/12.228689

KEYWORDS: Diffuse reflectance spectroscopy, Data modeling, Monte Carlo methods, Diffusion, Tissues, Scattering, Tissue optics, Computer simulations, Light, Refractive index

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Proceedings Article | 10 August 1994 Paper

Heterodyne interferometric measurement of the temperature coefficient of birefringence of quartz retardation plates

Sergio De Nicola, Giuseppe Carbonara, Andrea Finizio, Giovanni Pierattini

Proceedings Volume 2097, (1994) https://doi.org/10.1117/12.183140

KEYWORDS: Quartz, Temperature metrology, Refractive index, Reflectivity, Heterodyning, Interferometry, Beam splitters, Thermal optics, Birefringence, Thermography

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Proceedings Article | 10 August 1994 Paper

Reflection and transmission of electromagnetic waves from fractal multilayers

Sergio De Nicola, Giuseppe Carbonara, Andrea Finizio, Giovanni Pierattini

Proceedings Volume 2097, (1994) https://doi.org/10.1117/12.183178

KEYWORDS: Fractal analysis, Electromagnetic radiation, Algorithm development, Refractive index, Laser applications, Analytical research, Astatine, Electrodynamics, Integrated optics, Iterative methods

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Proceedings Article | 1 July 1990 Paper

Thermal nonlinearities of an aqueous polystyrene microspheres suspension

S. De Nicola

Proceedings Volume 1230, 123019 (1990) https://doi.org/10.1117/12.2294682

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