Relevant bibliographies by topics / Banda larga - Diffusione

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Banda larga - Diffusione'

Author: Grafiati
Published: 10 March 2023
Last updated: 31 July 2025

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Journal articles on the topic "Banda larga - Diffusione"

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Barille, R., D. Wang, K. D. Dorkenoo, and G. Rivoire. "Relation entre la modulation de fréquance et la diffusion de Rayleigh stimulée à large bande spectrale dans CS2." Annales de Physique 20, no. 5-6 (1995): 619–20. http://dx.doi.org/10.1051/anphys:199556040.

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Tourta, Sabah, Ammar Mokhnache, and Sara Seghiri. "Etude de l’effet des aérosols sur l’estimation du coefficient de réflectance bidirectionnelle à l’aide de mesures satellitaires." Journal of Renewable Energies 15, no. 4 (2023): 571–79. http://dx.doi.org/10.54966/jreen.v15i4.346.

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Le rayonnement solaire est atténué par les différents constituants atmosphériques, tels que les molécules, les aérosols, les gaz, les gouttelettes nuageuses ou les cristaux de glace. Les aérosols absorbent et diffusent le rayonnement, l’atténuation par diffusion est caractérisée par l’épaisseur optique des aérosols qui représentent le degré de turbidité de l’atmosphère. Cette turbidité peut être quantifié à l’aide du coefficient de trouble d’Ångstrom [1] ou du TL de Linke. La connaissance de est importante dans l’estimation du rayonnement solaire du sol à partir des images satellitaires. Le bu
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Koch, Olivier. "Entretien avec Sylvain Ricard." Sur le journalisme, About journalism, Sobre jornalismo 12, no. 2 (2023): 144–49. http://dx.doi.org/10.25200/slj.v12.n2.2023.577.

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FR. En France, deux magazines dédiés au journalisme d’investigation dessiné ont vu le jour dans les années 2010. La Revue dessinée et Topo publient des reportages édités sur des supports papier volumineux et de qualité —des « mooks »—, distribués dans les kiosques et dans les librairies. Ces deux titres illustrent, dans les registres narratifs de la bande dessinée, une stratégie industrielle de revalorisation de l’information déjà mise en œuvre par d’autres mensuels ou trimestriels, comme la revue XXI ou 6 mois. À rebours de la diffusion d’informations éphémères publiées sur des supports jetab
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Khedekar, Kaustubh, Andrea Zaffora, Plamen Atanassov, Lei Cheng, Christina Johnston, and Iryna V. Zenyuk. "Identical Location Mapping of Pt in Polymer Electrolyte Fuel Cells before and after Heavy-Duty Accelerated Stress Test." ECS Meeting Abstracts MA2022-02, no. 42 (2022): 1567. http://dx.doi.org/10.1149/ma2022-02421567mtgabs.

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Worldwide, governments and industries are pursuing the use of clean hydrogen to achieve zero emissions, especially for difficult to decarbonize sectors such as heavy-duty transportation, aviation, shipping and chemical manufacturing. Polymer electrolyte fuel cells (PEFCs) are an excellent candidate for heavy-duty vehicles (HDVs), particularly for their ability to scale range at a much smaller additional weight penalty1. However, initial system cost remains a significant challenge for large scale adoption mainly due to use of Platinum (Pt) electrocatalyst. Current approach to reduce initial cos
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Singh, Danièle Thomassin, Damian De Shane-Gill, Jerome Durlak, and Peter Roosen-Runge. "The Intercom Ontario High-Bandwidth Residential Field Trial: Lessons Learned." Canadian Journal of Communication 24, no. 3 (1999). http://dx.doi.org/10.22230/cjc.1999v24n3a1116.

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Abstract: This article explores the history of the Intercom Ontario field trial in which residents of 64 homes were offered a variety of digital communication services and access to digital content delivered over a symmetric high-bandwidth data network. Some insights gleaned from the trial are: novel services can be designed and successfully implemented at low cost by small, highly collaborative groups; broadband communication channels, such as two-way video, are likely to be exploited in ways not anticipated by the designers; people seek out a broader variety of content selections than tradit
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Salzbrunn, Monika. "Artivisme." Anthropen, 2019. http://dx.doi.org/10.17184/eac.anthropen.091.

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Artivisme est un néologisme composé des mots art et activisme. Il concerne l’engagement social et politique d’artistes militants (Lemoine et Ouardi 2010) mais aussi l’art utilisé par des citoyen.ne.s comme moyen d’expression politique (Salzbrunn 2014, 2015 ; Malzacher 2014 : 14 ; Mouffe 2014). La distinction qui porte sur la formation initiale est davantage analytique qu’empirique dans la mesure où la définition d’artistes ou d’œuvres d’art en lien avec une formation institutionnelle (hautes écoles d’art) est aujourd’hui mise en question : Le succès planétaire d’artistes autodidactes engagés c
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Dissertations / Theses on the topic "Banda larga - Diffusione"

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Del, Monte Sara. "Diffusione della banda larga: fattori di sviluppo e regolazione." Doctoral thesis, Universita degli studi di Salerno, 2014. http://hdl.handle.net/10556/1865.

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2011-2012<br>La banda larga è un fattore fondamentale per lo sviluppo della società dell’informazione. Nei paesi sviluppati si assiste ad una rapida crescita della larga banda, ma mentre il numero di nuovi sottoscrittori alla banda larga fissa si è quasi arrestato, quello relativo alla banda larga mobile sta crescendo molto rapidamente. In questo lavoro, utilizzando un panel di dati relativi ai 27 Stati membri dell’Unione europea, ha analizzato i fattori che determinano la diffusione della banda larga fissa e quelli che determinano la diffusione della banda larga mobile. Per quanto riguarda l
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DI, FABIO SILVIO. "Essays on ICT diffusion." Doctoral thesis, Università Politecnica delle Marche, 2018. http://hdl.handle.net/11566/253659.

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Questa tesi introduce una classe di modelli epidemici di diffusione specificamente adattati alla descrizione e all'analisi delle tecnologie ICT, mediante la definizione di un mercato potenziale dinamico che dipende dalla dimensione della rete del numero di individui che hanno già adottato. Rispetto ai tradizionali prodotti “stand alone”, le tecnologie ICT hanno caratteristiche peculiari e differenti comportamenti di adozione che possono essere spiegati dagli effetti e dalle esternalità di rete. Dopo una panoramica dello stato dell'arte della letteratura sulla diffusione delle innovazioni e sul
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Chauveau, Janic. "Caractérisation des pôles de résonance d'objets éclairés par une onde électromagnétique large bande." Nantes, 2007. http://www.theses.fr/2007NANT2059.

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En zone de résonance, la réponse d’une cible radar à une onde électromagnétique large bande présente des singularités appelées pôles de résonance. Ces pôles de résonance sont intrinsèques à chaque objet et peuvent, par conséquent, être utilisés dans un processus d’identification. Sont étudiées dans cette thèse : une analyse du caractère résonant des objets à partir du facteur de qualité, une procédure de sélection des pôles de résonance qui suffisent pour caractériser un objet, la détermination des dimensions caractéristiques d’objets à partir des pôles de résonance, la caractérisation de cibl
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Mihelic, François. "Diffusion Brillouin stimulée dans les fibres optiques : amplification Brillouin large bande et laser Brillouin." Thesis, Lille 1, 2008. http://www.theses.fr/2008LIL10146/document.

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Dans le cadre de ce travail de thèse plusieurs études seront exposées. La première aborde le problème de la conservation de l'information lors d'un processus d'amplification Brillouin. La seconde s'attache à la réalisation d'un amplificateur Brillouin possédant une large bande passante. Enfin la dernière porte sur la réalisation de lasers Brillouin de très grande cohérence. Une étude expérimentale de la transition entre le générateur Brillouin et l'amplificateur Brillouin dans un régime de saturation est effectuée. Elle met en évidence le transfert d'énergie du générateur vers la sonde amplifi
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Mihelic, François. "Diffusion Brillouin stimulée dans les fibres optiques : amplification Brillouin large bande et laser Brillouin." Electronic Thesis or Diss., Lille 1, 2008. http://www.theses.fr/2008LIL10146.

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Dans le cadre de ce travail de thèse plusieurs études seront exposées. La première aborde le problème de la conservation de l'information lors d'un processus d'amplification Brillouin. La seconde s'attache à la réalisation d'un amplificateur Brillouin possédant une large bande passante. Enfin la dernière porte sur la réalisation de lasers Brillouin de très grande cohérence. Une étude expérimentale de la transition entre le générateur Brillouin et l'amplificateur Brillouin dans un régime de saturation est effectuée. Elle met en évidence le transfert d'énergie du générateur vers la sonde amplifi
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Dorkenoo, Kokou Dodzi. "Diffusion Rayleigh d'aile stimulée large bande dans le disulfure de carbone - développement d'instabilités - couplage deux ondes." Paris 11, 1995. http://www.theses.fr/1995PA112520.

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Le disulfure de carbone a fait objet de plusieurs types d'études en optique non linéaire, durant plusieurs décennies. C'est à ce titre qu'il est considéré comme un corps de référence dans les liquides. La forte constante Kerr de ce milieu et son seuil de diffusion peu élevé ont fait de celui-ci un milieu difficile à cerner. Ainsi, les spectres émanant de ce corps ont été interprétés de différentes manières selon les auteurs, en fonction du régime d'excitation et des intensités laser. Nous proposons dans un premier temps une étude spectrale en fonction de l'énergie (de 3. 10⁻ ¹ à 10 GW/cm²) sur
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Negru, Daniel. "Convergence des réseaux IP et de diffusion vidéo : de la gestion des ressources à la fourniture de services." Versailles-St Quentin en Yvelines, 2006. http://www.theses.fr/2006VERS0013.

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La tendance majeure dominant actuellement le marché des Technologies de l'Information et de la Communication (TIC) est la création d'un nouvel environnement dont les fonctionnalités permettraient aux utilisateurs d'avoir accès à une pluralité de services sans contrainte de lieu, de temps et de terminal. Les nouvelles générations de réseaux et systèmes ouvriront la voie en fournissant une plus grande accessibilité réseau et en créant un contexte d'inter-opérabilité aux systèmes hétérogènes. Ces réseaux hétérogènes trouvent leurs origines dans trois mondes: le monde des télécommunications, le mo
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Ma, Ning. "Analyse temps-fréquence de signaux sonar très large bande : contribution à l'identification de la réponse impulsionnelle des fonds marins." Lyon, INSA, 1996. http://www.theses.fr/1996ISAL0096.

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Ce travail concerne la caractérisation du fond marin au moyen d'un sonar très large bande à directivité constante. L'originalité de l'étude repose d'une part sur la mise en œuvre d'un système sonar expérimental capable d'émettre et de recevoir des signaux "chirp" (modulation linéaire de fréquence entre 20-140 kHz) et d'autre part sur le développement de méthodes de modélisation, d'identification et de classification adaptées à l'analyse des signaux rétrodiffusés par le fond marin. Dans une première partie, les signaux collectés sur 5 types de fonds différents sont analysés par la fonction d'am
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Denis, Benoît. "Exploitation des capacites de radiolocalisation des transmissions ultra-large bande dans les reseaux sans-fil." Rennes, INSA, 2005. https://tel.archives-ouvertes.fr/tel-00508437.

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Nombre d'applications récentes reposent sur la capacité des systèmes de communication à délivrer des informations de localisation. Les propriétés de la technologie Ultra-Large Bande (ULB) peuvent alors être mises à profit: résolution, précision temporelle pour la mesure de temps de vol et la synchronisation. Les travaux présentés traitent du problème de localisation ULB dans les réseaux sans-fil, mettant en avant la diversité multi-trajets, la connaissance a priori ou les formes nouvelles de réseau (ad hoc). Nous modélisons les erreurs susceptibles d'affecter des temps (ou différences de temps
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Sakr, Georges. "Etude par cathodoluminescence de la diffusion et du confinement des excitons dans des hétérostructures ZnO/ZnMgO et diamant 12C/13C." Thesis, Versailles-St Quentin en Yvelines, 2015. http://www.theses.fr/2015VERS011V/document.

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Ce travail de thèse porte sur la diffusion des porteurs de charge en excès dans deux semiconducteurs à large bande interdite: l’alliage ZnMgO et le diamant 13C. Il est basé sur l’étude d’hétérostructures ZnMgO/ZnO/ZnMgO et 13C/12C/13C à puits de collecte ZnO ou 12C. Sur leurs sections transverses et avec la résolution nanométrique en excitation par cathodoluminescence (CL), nous avons étudié l’évolution de l’intensité de l’émission issue du puits en ZnO ou 12C en fonction de la distance entre l’impact de l’excitation et le puits. Cela nous a permis de mesurer directement les longueurs de diffu
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Book chapters on the topic "Banda larga - Diffusione"

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Kumar, Ajay, Mr Ashish, Sanjeev Kumar, Udaibir Singh, and Naorem Santakrus Singh. "CRYSTAL GROWTH TECHNIQUES FOR PEROVSKITE PHOTOVOLTAIC APPLICATIONS." In Futuristic Trends in Chemical Material Sciences & Nano Technology Volume 3 Book 8. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3becs8p4ch2.

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Silicon based conventional solar cells have dominated the photovoltaic (PV) market as they have high efficiency even though their production cost is comparatively high. Continuous efforts for an alternative to the conventional cells have been made across the globe to reduce the cost. One of the most standout in the search of an alternative is the hybrid solar cells – a blend of both organic and inorganic materials. Organic materials are keenly priced, easy to process and their functionality can be altered by chemical synthesis and molecular engineering. Inorganic semiconductors have high absor
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West, Joel. "Institutional Constraints in the Initial Deployment of Cellular Telephone Service on Three Continents." In Information Technology Standards and Standardization. IGI Global, 2000. http://dx.doi.org/10.4018/978-1-878289-70-4.ch013.

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The influence of institutional pressures on standards and standardization are readily apparent in their most direct form. For example, in the mid-1990s, both the European Union and the United States issued new wireless communications licenses in the 1.8-2.0 GHz band: the EU countries mandated use of their decade-old communications standard, while the U.S. authorized three competing standards not yet widely used in the U.S. (Mehrotra, 1994). However, institutional pressures can also shape standardization efforts in a less direct fashion. For example, in a regulated industry such as telecommunic
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"Selected Applications of Nanomaterials." In Nanoscopic Materials: Size-Dependent Phenomena and Growth Principles, 2nd ed. The Royal Society of Chemistry, 2014. http://dx.doi.org/10.1039/bk9781849739078-00369.

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The focus of interest in nanotechnology has been on nanoelectronics. Conventional diamonds with deliberately introduced nitrogen vacancies have potential applications in quantum computing, but it is in particular the new allotropes of carbon that have fascinated. Over the years, interest has shifted from the fullerenes over carbon nanotubes to graphene, a well-defined material with amazing electronic properties; in particular its electronic conductivity promises appealing applications. Semiconducting oxides are increasingly used in energy applications including Li ion batteries and solar cells
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Soonmin, Ho, Immanuel Paulraj, Mohanraj Kumar, Rakesh K. Sonker, and Pronoy Nandi. "Recent Developments on the Properties of Chalcogenide Thin Films." In Chalcogens [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.102429.

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Chalcogenide thin films have attracted a great deal of attention for decades because of their unique properties. The recent developments on thin film-based supercapacitor applications were reported. As a result of sustained efforts, the experimental findings revealed remarkable properties with enhanced fabrication methods. The properties of perovskite solar cells were discussed in terms of crystal structure and phase transition, electronic structure, optical properties, and electrical properties. Perovskite solar cell has gained attention due to its high absorption coefficient with a sharp abs
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Quack, M., and M. A. Suhm. "Potential energy surfaces, quasiadiabatic channels, rovibrational spectra, and intramolecular dynamics of (HFh and its isotopomers from quantum Monte Carlo calculations." In Quantum Monte Carlo. Oxford University PressNew York, NY, 2007. http://dx.doi.org/10.1093/oso/9780195310108.003.0075.

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Abstract The hydrogen fluoride dimer (HF)2 is the simplest molecule exhibiting the phenomenon of a hydrogen bond. In this case, the hydrogen fluoride molecules are loosely held together by the relatively weak hydrogen bond to produce a floppy molecule with anharmonic vibrations not easily characterized, but producing an interesting and complex spectroscopy. In this paper, Quack and Suhm report the use of the diffusion QMC method in analyzing the behavior of the dimer and its isotopomers, and the successful prediction and assignment of spectral bands observed in their earlier experiments.a The
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Severson, M. W., and V. Buch. "Quantum Monte Carlo simulation of intermolecular excited vibrational states in the cage water hexamer." In Quantum Monte Carlo. Oxford University PressNew York, NY, 2007. http://dx.doi.org/10.1093/oso/9780195310108.003.00121.

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Abstract The general problem discussed in this paper is that of predicting vibrational excitation in large hydrogen-bonded clusters, and, as the authors point out, “It should be realized that the problem is very difficult.” In this case, the cluster is the cage form of the water hexamer, simplified somewhat by use of rigid-body water molecules. The key to the solution is a new procedure for locating the nodes in the wavefunctions for the excited vibrational states. The method begins with an approximately correct candidate nodal surface, obtained as a zero for a normal coordinate in the harmoni
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Conference papers on the topic "Banda larga - Diffusione"

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Marthe, J., E. Meillot, F. Enguehard, and G. Jeandel. "Bilayer Plasma-Sprayed Alumina for Optical Applications." In ITSC 2012, edited by R. S. Lima, A. Agarwal, M. M. Hyland, et al. ASM International, 2012. http://dx.doi.org/10.31399/asm.cp.itsc2012p0703.

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Abstract Materials with fine-scale structures are recognized to exhibit technologically efficient mechanical or thermal properties. Thermal sprayed nanostructured media could also be interesting in the optical field thanks to the diffusion interaction between short wavelength radiations and submicron-sized pores. One difficulty of the Suspension Plasma Spray (SPS) technique is to provide a sufficiently thick coating and to maintain efficient mechanical properties when the coating is removed from the substrate. The aim of this study was to spray a reflective and diffusive self-supporting alumin
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Adams, Michael, Sian Byron, Adam Chace, James Schemmer, and Peter Vitruk. "Mode Quality Control in Large Area, RF Excited CO2 Laser Employing Split-Wave Hybrid Resonator." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.cthh6.

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Gas discharge excitation at 40.68 MHz (ISM frequency in the VHF-band) is proven to be efficient for non-wave-guide, diffusion-cooled, large area CO2 laser employing a novel type of resonator cavity referred to as split-wave hybrid (SWH) resonator [1]. SWH resonator approach represents a custom resonator concept in the design of sealed-off, high power, single mode CO2 lasers for industrial applications. Electrode walls in the SWH resonator act as wave-front-splitting mirrors similar to a Fresnel double mirror or Lloyd mirror interferometer [2].
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Garmire, E., F. Karpushko, A. Kost, and C. M. Yang. "Band-edge surface transient diffraction." In OSA Annual Meeting. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.fi2.

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As much as 25% self-diffraction has been observed at the surface of n-GaAs:Te when two pumps (and a weak probe) intersect with an internal angle of 0.15 rad in the Raman–Nath regime. The photoinduced gratings decayed in less than 100 ps. The diffraction efficiency was nearly independent of sample thickness (40 μm and 350 μm), and careful investigation has shown that the diffraction arose primarily at the surface and was resonant just below the band edge. It is proposed that band-bending at the surface states causes increased absorption and results in a sheet of optically induced charge. The fa
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Allu, Pareekshith, and Sandip Mazumder. "Hybrid Ballistic-Diffusive Solution of the Frequency-Dependent Phonon Boltzmann Transport Equation." In ASME 2016 Heat Transfer Summer Conference collocated with the ASME 2016 Fluids Engineering Division Summer Meeting and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ht2016-7079.

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The phonon Boltzmann Transport Equation (BTE) is difficult to solve on account of the directional and spectral nature of the phonon intensity, which necessitates angular and spectral discretization, and ultimately results in a large number (typically few hundreds) of four-dimensional partial differential equations. In the ballistic (large Knudsen number) regime, the phonon intensity is highly anisotropic, and therefore, angular resolution is desirable. However, in the diffusive (small Knudsen number) regime, the intensity is fairly isotropic, and hence, angular discretization is wasteful. In s
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Karges, H. E., G. Zettlemeiβl, H. Naumann, U. Eberhard, and M. Bröker. "PURIFICATION AND CHARACTERIZATION OF GENTECHNOLOGICALLY PREPARED ANTITHROMBIN III." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643684.

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Isolation and purification of antithrombin III (AT III) by affinity chromatography on immobilized heparin is a standard method for the large scale preparation of this protein from human or animal plasma. Hence, after AT III became available by gentechnological methods, we tried to adapt this procedure for the isolation of AT III from supernatants of mammalian- and yeast-cells. Indeed, it was possible to use this method also for the isolation of the recombinant gene products. Since, however, the cell growth media contain heterologous protein or peptide mixtures like fetal calf serum, the method
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St. John, W. D., and J. P. Wicksted. "Resonatorless absorptive switching and self-pulsing in bulk ZnSe." In OSA Annual Meeting. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.wq3.

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Resonatorless absorptive switching and self-pulsing have been observed in bulk ZnSe when excited by square input pulses at 476.5 nm on a time scale from ~1 μs to &gt;1 s. Beyond a critical intensity of ~7 kW/cm2 the material begins to switch repeatedly between a transmission of ≥60% and ≤5%. This switching and self-pulsing behavior is a local phenomenon (resonatorless). This bistable behavior is based upon band gap renormalization, band filling, and plasma screening. Through absorption there is an increase in the temperature. This results in a shifting of the band edge to longer wavelengths. T
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Olbright, G., N. Peyghambarian, and Hyatt M. Gibbs. "Observation of band-filling optical nonlinearity in a CdSxSe1−x doped glass." In OSA Annual Meeting. Optica Publishing Group, 1985. http://dx.doi.org/10.1364/oam.1985.fr4.

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The origin of optical nonlinearity in a semiconductor-doped glass at room temperature is studied using a pump-probe experimental technique. Glasses doped with semiconductor crystallites which are commercially known as sharp-cut color filters provide very interesting media for nonlinear signal processing because of their rapid response time (due to short carrier diffusion time) and large optical nonlinearity.1 The output of a nitrogen laser is used to pump a tunable dye laser (pump) and a dye cell (probe continuum). The pump-induced changes in transmission of the broadband probe are recorded wi
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Singh, Mayank Kumar, Indu Saini, Neetu Sood, and Jasleen Saini. "A Sub-band Anisotropic Diffusion Technique for de-speckling of Ultrasound Images of Breast Cancer." In International Conference on Women Researchers in Electronics and Computing. AIJR Publisher, 2021. http://dx.doi.org/10.21467/proceedings.114.10.

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Ultrasound imaging technique finds crucial application in clinical diagnosis of breast cancer. Presence of noise in ultrasound image due to different factor degrades the image quality and so the accuracy of diagnosis. Wavelet thresholding have been used from very beginning for de-noising of ultrasound image. Here in this paper we propose an intervention of anisotropic diffusion techniques in wavelet thresholding. In wavelet thresholding the thresholding operation usually applied after various feature extraction step, but in this study, we proposed to use a combinational approach. The approach
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Millerd, James, Steffen Koehler, Elsa Garmire, and Afshin Partovi. "Large beam coupling gain in lnP:Fe using Franz–Keldysh electrorefractive photorefraction." In OSA Annual Meeting. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.fi3.

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A beam-coupling gain of 19.1 cm−1 in InP:Fe has been achieved using near band edge photorefractive techniques. The conventional electro-optic photorefractive (EOPR) effect in semiconductors may be combined with the Franz–Keldysh electrorefractive photorefractive (ERPR) effect to produce large beam coupling gain coefficients. We have examined the effects using a tuneable Ti:sapphire laser in a pump/probe configuration and an applied electric field. Conventional EOPR creates a sinusoidal space-charge field (Esc) through carrier drift and diffusion, and the applied field (Edc) increases the magni
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Manning, R. J., D. W. Crust, A. Miller, and K. Woodbridge. "The Geometrical Dependence of Transient Optical Nonlinearities in Multiple Quantum Well Structures." In Optical Bistability. Optica Publishing Group, 1988. http://dx.doi.org/10.1364/obi.1988.fa.7.

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Semiconductor multiple quantum well structures exhibit very large, room temperature, nonlinear refractive effects associated with resolvable excitonic features [1]. These nonlinearities may find use in all-optical devices if sufficient refractive index change can be achieved before the exciton completely saturates [2]. A unique aspect of band gap resonant optical, nonlinearities in quantum wells is the spatial confinement of the generated carriers within the layers. We have exploited the excitonic refractive nonlinearity in GaAs/AlGaAs multiple quantum wells in two separate degenerate four wav
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You might also be interested in the extended bibliographies on the topic 'Banda larga - Diffusione' for particular source types:
Dissertations / Theses
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