Prof. Gaetano Assanto Profile

Prof. Gaetano Assanto

Professor at Univ degli Studi di Roma Tre

SPIE Involvement:

Author

Publications (23)

Proceedings Article | 18 June 2024 Presentation + Paper

Nonreciprocal nematicon propagation

Enrique Calisto, Gaetano Assanto

Proceedings Volume 13016, 130160K (2024) https://doi.org/10.1117/12.3013517

KEYWORDS: Wave propagation, Waveguides, Optical isolators, Solitons, Nonlinear optics, Liquid crystals, Geometrical optics, Beam propagation method, Refractive index

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Proceedings Article | 21 November 2017 Open Access

Nanotechnology in lithium niobate for integrated optic frequency conversion in the UV

Alessandro Busacca, Claudia Santini, Luigi Oliveri, Stefano Riva-Sanseverino, Antonino Parisi, Alfonso Cino, Gaetano Assanto

Proceedings Volume 10567, 1056746 (2017) https://doi.org/10.1117/12.2308165

KEYWORDS: Ultraviolet radiation, Waveguides, Lithium niobate, Crystals, Integrated optics, Lithium, Nanotechnology, Frequency conversion, Second-harmonic generation, Channel waveguides

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Proceedings Article | 5 September 2015 Presentation + Paper

Programmable lattices of optical vortices in nematic liquid crystal

R. Barboza, G. Assanto, U. Bortolozzo, M. Clerc, S. Residori, E. Vidal-Henriquez

Proceedings Volume 9565, 95650L (2015) https://doi.org/10.1117/12.2185512

KEYWORDS: Liquid crystals, Optical vortices, Spatial light modulators, Polarizers, Light valves, Gaussian beams, Spiral phase plates, Anisotropy, Optical alignment, Dielectrics

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SPIE Journal Paper | 1 July 2011

Integrated Bragg reflectors in low-index media: enabling strategies for wavelength tunability in electro-optic liquid crystals

Rita Asquini, Giovanni Gilardi, Antonio d'Alessandro, Gaetano Assanto

OE, Vol. 50, Issue 07, 071108, (July 2011) https://doi.org/10.1117/12.10.1117/1.3559210

KEYWORDS: Electrodes, Liquid crystals, Refractive index, Reflectors, Modulation, Electro optics, Light wave propagation, Reflectivity, Waveguides, Glasses

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Proceedings Article | 7 January 2011 Paper

Multicolor nonlinear pulse compression by consecutive optical parametric amplification in quasi-phase matched structures

U. Sapaev, D. Yusupov, G. Assanto

Proceedings Volume 7993, 79930Q (2011) https://doi.org/10.1117/12.882887

KEYWORDS: Crystals, Nonlinear optics, Solids, Dispersion, Picosecond phenomena, Second-harmonic generation, Frequency conversion, Picture Archiving and Communication System, Electronics, Optoelectronics

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Proceedings Article | 9 February 2007 Paper

Nematic liquid crystal cells for optical spatial solitons (nematicons)

A. De Luca, A. Veltri, L. Pezzi, G. Coschignano, C. Umeton, A. Alberucci, C. Conti, M. Peccianti, G. Assanto

Proceedings Volume 6487, 64870R (2007) https://doi.org/10.1117/12.717527

KEYWORDS: Interfaces, Spatial solitons, Liquid crystals, Glasses, Beam propagation method, Light wave propagation, Solitons, Polymers, Polarization, Optical properties

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Proceedings Article | 5 October 2005 Paper

Bloch oscillations in nematic liquid crystals waveguide arrays

Katarzyna Brzdakiewicz, Miroslaw Karpierz, Gaetano Assanto, Andrea Fratalocchi, Edward Nowinowski-Kruszelnicki

Proceedings Volume 5949, 59490R (2005) https://doi.org/10.1117/12.625394

KEYWORDS: Waveguides, Liquid crystals, Refractive index, Electrodes, Beam propagation method, Light wave propagation, Crystals, Nonlinear optics, Liquids, Modulation

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Proceedings Article | 18 May 2001 Paper

Polycrystalline Ge detectors integrated on SOI waveguide: device modeling and experimental results

Gianlorenzo Masini, Lorenzo Colace, Gaetano Assanto

Proceedings Volume 4293, (2001) https://doi.org/10.1117/12.426931

KEYWORDS: Waveguides, Silicon, Photodetectors, Sensors, Germanium, Absorption, Near infrared, Wavelet packet decomposition, Waveguide modes, Optical fibers

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Proceedings Article | 18 May 2001 Paper

p-i-n germanium photodetectors integrated on silicon substrates

Lorenzo Colace, Gianlorenzo Masini, Gaetano Assanto, Hsin-Chiao Luan, Lionel Kimerling

Proceedings Volume 4293, (2001) https://doi.org/10.1117/12.426930

KEYWORDS: Germanium, Silicon, Photodetectors, Diodes, Near infrared, Interfaces, Doping, Photodiodes, Heterojunctions, Information operations

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Proceedings Article | 18 May 2001 Paper

Materials processing technology for the integration of effective Ge p-i-n photodetectors on Si for Si microphotonics

Hsin-Chiao Luan, Meghan Kerner, Lionel Kimerling, Lorenzo Colace, Gianlorenzo Masini, Gaetano Assanto

Proceedings Volume 4293, (2001) https://doi.org/10.1117/12.426929

KEYWORDS: Silicon, Germanium, Annealing, Photodetectors, Transmission electron microscopy, Materials processing, Information operations, Heteroepitaxy, Semiconducting wafers, Field effect transistors

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Proceedings Article | 1 May 2001 Paper

Efficient frequency doubling in lithium niobate waveguides by reverse proton exchange

Annarita Lallo, Claudio Conti, Alfonso Cino, Gaetano Assanto

Proceedings Volume 4268, (2001) https://doi.org/10.1117/12.424636

KEYWORDS: Waveguides, Second-harmonic generation, Lithium niobate, Crystals, Lithium, Refractive index, Polarization, Wave propagation, Near infrared, Channel waveguides

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Proceedings Article | 1 May 2001 Paper

Modal birefringences measurement of multilayer multimodal AlGaAS/AlAs waveguides

Marco Secondini, Giuseppe Leo, Julien Nagle, Vincent Berger, Gaetano Assanto

Proceedings Volume 4268, (2001) https://doi.org/10.1117/12.424634

KEYWORDS: Waveguides, Birefringence, Charge-coupled devices, Harmonic generation, CCD cameras, Oscillators, Refractive index, Polarization, Near field, Oxidation

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Proceedings Article | 1 May 2001 Paper

X-ray and optical characterization of multilayer semiconductor waveguides

Olivier Durand, Giuseppe Leo, Gianlorenzo Masini, Lorenzo Colace, Xavier Marcadet, Vincent Berger, Gaetano Assanto

Proceedings Volume 4268, (2001) https://doi.org/10.1117/12.424635

KEYWORDS: Waveguides, Refractive index, X-rays, Semiconductors, Gallium arsenide, X-ray optics, Information operations, Integrated optics, Multilayers, X-ray characterization

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Proceedings Article | 12 April 2001 Paper

Two-dimensional spatial solitons in nematic liquid crystals

Marco Peccianti, Cesare Umeton, Iam-Choon Khoo, Alfredo DeRossi, Gaetano Assanto

Proceedings Volume 4271, (2001) https://doi.org/10.1117/12.424716

KEYWORDS: Spatial solitons, Liquid crystals, Solitons, Polarization, Beam propagation method, Wave propagation, Glasses, Molecules, Thermography, Interfaces

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Proceedings Article | 15 March 2000 Paper

Ge-on-Si high-responsivity near-infrared photodetectors

Gianlorenzo Masini, Lorenzo Colace, Gaetano Assanto, Hsin-Chiao Luan, Kazumi Wada, Lionel Kimerling

Proceedings Volume 3953, (2000) https://doi.org/10.1117/12.379609

KEYWORDS: Germanium, Silicon, Photodetectors, Annealing, Heterojunctions, Near infrared, Optoelectronic devices, Heteroepitaxy, Semiconducting wafers, Electronic components

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Proceedings Article | 15 March 2000 Paper

Near-infrared wavemeter based on an array of polycrystalline Ge-on-Si photodetectors

Gianlorenzo Masini, Lorenzo Colace, Gaetano Assanto

Proceedings Volume 3953, (2000) https://doi.org/10.1117/12.379601

KEYWORDS: Silicon, Germanium, Photodetectors, Sensors, Near infrared, Silicon films, Absorption, Heterojunctions, Photodiodes, Metals

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Proceedings Article | 19 March 1999 Paper

Near-infrared 16-pixel linear array based on polycrystalline Ge on Si

Gianlorenzo Masini, Lorenzo Colace, Fabrizio Galluzzi, Gaetano Assanto

Proceedings Volume 3630, (1999) https://doi.org/10.1117/12.342803

KEYWORDS: Silicon, Germanium, Near infrared, Heterojunctions, Photodetectors, Crystals, Absorption, Silver, Diodes, Electrodes

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Proceedings Article | 13 May 1997 Paper

Arrest of self-focusing collapse with quadratic nonlinearities

Alfredo DeRossi, Gaetano Assanto, Stefano Trillo, William Torruellas

Proceedings Volume 2966, (1997) https://doi.org/10.1117/12.274228

KEYWORDS: Ferroelectric materials, Laser beam propagation, Diffraction, Nonlinear optics, Nonlinear response, Laser induced damage, Wave propagation, Polarization, Absorption, Phase matching

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Proceedings Article | 5 August 1994 Paper

All-optical coherent processing via cascading of second-order nonlinearities

Gaetano Assanto, Irina Torelli, Stefano Trillo, George Stegeman

Proceedings Volume 2321, (1994) https://doi.org/10.1117/12.182011

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Proceedings Article | 6 July 1994 Paper

All-optical switching using second-order nonlinearities in KTP

Z. Wang, David Hagan, Mansoor Sheik-Bahae, Richard DeSalvo, George Stegeman, Eric Van Stryland, Gaetano Assanto

Proceedings Volume 2229, (1994) https://doi.org/10.1117/12.179586

KEYWORDS: Switching, Ferroelectric materials, Metals, Photoemission spectroscopy, Transition metals, Iron

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Proceedings Article | 1 August 1990 Paper

Nonlinear guided-wave grating phenomena

Jeffrey Ehrlich, Gaetano Assanto, George Stegeman

Proceedings Volume 1280, (1990) https://doi.org/10.1117/12.20652

KEYWORDS: Bistability, Waveguides, Reflection, High speed photonics, Switching, Diffusion, Nonlinear optics, Specular reflections, Reflectors, Refraction

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Proceedings Article | 1 August 1990 Paper

Nonlinear coupling with CdS grating in waveguide

Mario Bertolotti, Francesco Michelotti, Concita Sibilia, Gaetano Assanto, C. Cali

Proceedings Volume 1273, (1990) https://doi.org/10.1117/12.20477

KEYWORDS: Cadmium sulfide, Waveguides, Absorption, Nonlinear optical materials, Glasses, Argon ion lasers, Argon, Optical amplifiers, Refractive index, Protactinium

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Proceedings Article | 1 May 1990 Paper

Efficient grating coupling and optical characterization of poly-4BCMU waveguides

Gaetano Assanto, Qian Gong, Raymond Zanoni, George Stegeman, Ryszard Burzynski, Paras Prasad

Proceedings Volume 1216, (1990) https://doi.org/10.1117/12.18129

KEYWORDS: Waveguides, Refractive index, Polymers, Thin films, Switching, Photoresist materials, Diffraction gratings, Wave propagation, Birefringence, Photonics

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