M. Prassas

Corning (France)

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J. Phalippou

Université de Montpellier

J. Zarzycki

Eaton (Taiwan)

Thierry Woignier

Institut de Recherche pour le Développement

F.W. Willems

Harvard University

Larry L. Hench

Florida Institute of Technology

J.C. van der Plaats

Corning (France)

C. Lerminiaux

Université de Technologie de Troyes

A.M.J. Koonen

Eindhoven University of Technology

Francesco Enrichi

University of Verona

G. Mattei

University of Padua

Cooperative Institutions

Centre National de la Recherche Scientifique

State Optical Institute named after SI Vavilov

Corning (France)

École Nationale Supérieure d'Ingénieurs de Caen

Commissariat à l'Énergie Atomique et aux Énergies Alternatives

Universitat de Barcelona

Centre de Recherche sur les Ions, les Matériaux et la Photonique

Université de Caen Normandie

Sorbonne Université

Université de Montpellier

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Propagation in erbium and silicon codoped silica slab waveguides: analysis of gain

Journal of Physics Condensed Matter (2004)

Christian Dufour M. Levalois M. Prassas B. Garrido Juana Moreno

The feasibility of optical amplifying waveguides is investigated through the elaboration of silica films codoped with erbium ions and silicon nanograins. The waveguiding function is provided by the index contrast between the active and cladding layers whereas the amplification is achieved by an efficient interaction between silicon nanograins and erbium ions. Based on experimental results and theoretical studies, this paper aims at providing a detailed analysis of the optical gain expected in slab waveguides taking into account a lateral pumping scheme of the silicon nanograins, the energy transfer mechanism from silicon grains to erbium ions and finally the propagation equations within the active layer. The main parameters—such as erbium and silicon concentrations, device length and pumping power—have been examined.

Cladding (metalworking)

Erbium

Slab

10.1088/0953-8984/16/36/028

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Citations (1)

Luminescence Properties of a Multi-Component Glass Co-Implanted with Si and Er

Diffusion and defect data, solid state data. Part B, Solid state phenomena/Solid state phenomena (2004)

Francesco Enrichi G. Mattei C. Sada E. Trave E. Borsella

The incorporation of Si-nc in Er doped silica is known to strongly enhance the infrared luminescence of Er3+ at 1.54µm. The enhancement is believed to be due to an energy transfer process from Si-nc to Er. In this work we investigate the formation of Si nano-aggregates and their role in the energy transfer process to Er3+ ions for a multi-component glass host. These materials can offer better performances than silica in terms of Er solubility and band broadness for integrated Er-doped optical amplifiers and investigation is therefore very interesting for optoelectronic applications. Si and Er were co-implanted by choosing the implantation energies in order to optimize the overlap between the concentration profiles. The precipitation of Si and the enhancement of the 1.54 µm Er emission were studied for different post-implantation annealing temperatures. In particular the optical properties of the glass were investigated by means of photoluminescence (PL) spectroscopy and the results are discussed in relation to a standard silica substrate. These data are presented and related to the structural properties of the material. Moreover the implications on the future development of an Er doped optical amplifier are discussed.

10.4028/www.scientific.net/ssp.99-100.37

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The mechanical performance of laminated hybrid-glass units

Composite Structures (2013)

Mauro Overend C Butchart Henri C. Lambert M. Prassas

Laminated Glass

Toughened glass

10.1016/j.compstruct.2013.11.009

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Citations (38)

Preparation of xNa2O−(1−x)SiO2 gels for the gel-glass process: I. Atmospheric effect on the structural evolution of the gels

Journal of Non-Crystalline Solids (1982)

M. Prassas J. Phalippou Larry L. Hench J. Zarzycki

Vitrification

Sodium carbonate

10.1016/0022-3093(82)90247-2

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Citations (81)

Synthesis of monolithic silica gels by hypercritical solvent evacuation

Journal of Materials Science (1984)

M. Prassas J. Phalippou J. Zarzycki

10.1007/bf00563063

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Citations (100)

Lossless Integrated Active Splitter for analog CATV distribution systems at 1.5 µm

J.C. van der Plaats F.W. Willems W. Muys A.M.J. Koonen Patrice Camy

We demonstrate the use of a Lossless Integrated Active Splitter (LIAS), fabricated by Thallium ion-exchange in a planar Erbium/Ytterbium co-doped silicate glass substrate, pumped at 980 nm in an analog CATV distribution system at 1.5µm.

Splitter

Ytterbium

Beam splitter

Erbium

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THE AEROGEL GLASS CONVERSION

Le Journal de Physique Colloques (1989)

J. Phalippou Thierry Woignier M. Prassas

Les divers traitements qui permettent de transformer un aérogel de silice en verre sont examinés.La monolithicité des aérogels peut être obtenue par évacuation hypercritique du méthanol ou du CO2.Ces deux voies ont été successivement utilisées et des comparaisons sur la structure de l'aérogel obtenu sont précisées.Les aérogels obtenus par évacuation hypercritique du méthanol sont hydrophobes.Le traitement d'oxydation permet d'obtenir des aérogels ne contenant plus de résidus carbonés.La température de frittage dépend de la nature de l'aérogel et est fonction de la teneur en eau.Nous montrons que l'eau joue un rôle très important dans les phénomènes de moussage et de cristallisation observés.Un traitement de chloration permet d'obtenir des verres de silice exempts d'eau de structure.Abstract -The different treatments which have been carried out to transform an aerogel into a glass are reviewed.Monolithicity of aerogels can be reached using hypercritical drying qf methanol or CO2.These two ways are investigated and comparisons about the structure of the aerogels are deduced.Aerogels obtained from methanol hypercritical evacuation are hydrophobic.The oxidation treatment gives rise to free carbon aerogels.The sintering temperature depends on the nature of the aerogel and is linked to its hydroxyl content.It is shown that the water content plays a very important role and causes the bloating and the crystallization phenomena.A chlorination treatment of aerogel allows free water silica glass to be obtained.

10.1051/jphyscol:1989408

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Citations (5)

Emission of Er- and Si-doped silicate glass films obtained by magnetron co-sputtering

Materials Science and Engineering B (2003)

F. Gourbilleau P. Choppinet Christian Dufour M. Levalois R. Madelon

Nanoclusters

10.1016/j.mseb.2003.08.013

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Citations (8)

Preface

Journal of Sol-Gel Science and Technology (2019)