J.-M. Lourtioz

French National Centre for Scientific Research, Lutetia Parisorum, Île-de-France, France

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Publications (179)289.89 Total impact

  • M. Fevrier · P. Gogol · A. Aassime · R. Megy · D. Bouville · J. M. Lourtioz · B. Dagens
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    ABSTRACT: We show that the metal nanoparticle chains supporting localized surface plasmon resonance can behave as transmission Bragg gratings on a dielectric waveguide. An analytical model is developed to interpret the experimental results.
    No preview · Article · Dec 2012 · Applied Physics A
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    Full-text · Article · Aug 2012
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    ABSTRACT: In this letter, we demonstrate the integration of short metal nanoparticle chains (L \approx 700nm) supporting localized surface plasmons in Silicon On Insulator (SOI) waveguides at telecom wavelengths. Nanoparticles are deposited on the waveguide top and excited through the evanescent field of the TE waveguide modes. Finite difference time domain calculations and waveguide transmission measurements reveal that almost all the TE mode energy can be transferred to nanoparticle chains at resonance. It is also shown that the transmission level is very sensitive to the nanoparticle environment, thus opening the way towards ultra-compact sensors in guided optics on SOI.
    Preview · Article · Dec 2011
  • M. Fevrier · P. Gogol · A. Aassime · R. Megy · A. Bondi · J. M. Lourtioz · B. Dagens
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    ABSTRACT: to the MNP chain and then re-coupled to the dielectric waveguide after a certain distance. This mechanism is periodically repeated along the structure. The dielectric waveguide and the MNP chain thus behave as two almost balanced coupled waveguides with characteristic distances of around 3 and 1 11m for the Si3N4 and SOl waveguides, respectively. The difference between the two coupling lengths is explained by the difference between the effective indexes of the two slabs waveguides (1.57 and 2.56 for Si3N4 and SOl, respectively). In both cases, the optical power is totally absorbed by the LSP waveguide after several oscillations from the slab to LSP waveguides. The power decrease in the NP chains is due to the radiative and ohmic losses in the metallic nanopartic1es. The balanced coupled waveguide behaviour is usually obtained in the case of waveguides with similar effective indexes. Here the LSP resonance is strongly wavelength dependent. The excitation of the NP chain through evanescent coupling is then also wavelength dependent: a maximum LSP excitation induces a minimum in the transmission spectrum. Reciprocally, a transmission minimum corresponds to an optimal LSP generation.
    No preview · Article · May 2011
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    ABSTRACT: Erbium doping of silicon and silicon carbide using implantation followed by ion beam induced epitaxial crystallization (IBIEC) is investigated. The implanted concentration of Er was 1.4 at% in both cases. In Si(100), Rutherford backscattering/channeling revealed that about 40% of the Er atoms evolved upon rapid thermal annealing from an undetermined position (room temperature) to an interstitial tetrahedral position (650°C) and finally to a substitutional position (950°C). The remaining Er atoms were presumably trapped in the small precipitates visible in high resolution transmission electron microscopy. The photoluminescence at 1.54 μm of Er3+ is enhanced with annealing and persists up to room temperature after a 950°C 1 min anneal. The high concentration of optically active Er atoms is illustrated by the lack of saturation of the photoluminescence at high pumping excitation intensity. Erbium was also implanted into cubic silicon carbide films prepared by chemical vapor deposition on Si at 900°C. Both solid phase epitaxy (SPE) and IBIEC were performed. After a 950°C anneal, the low temperature photoluminescence at 1.54 μm after IBIEC was five times higher in SiC than in silicon. The difference in photoluminescence linewidth between IBIEC (broad lines) and SPE (sharp lines) is explained in terms of interactions between optically active erbium atoms.
    No preview · Article · Jan 2011 · MRS Online Proceeding Library
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    ABSTRACT: We have investigated structural and optical properties of SiGeC layers. Bulk and multiquantum wells heterostructures were grown by rapid thermal chemical vapor deposition. The photoluminescence of these structures exhibits two distinct features: deep level photoluminescence associated with localized states and band-edge photoluminescence which gives an indication of the band gap variation due to carbon incorporation in substitutional sites. In the case of multiquantum wells heterostructures, a strong segregation is reported as the growth temperature is decreased. An alternate technique to incorporate carbon in SiGe layers, the pulsed laser induced epitaxy with an excimer laser, is presented. The incorporation of carbon in substitutional sites is evidenced by Raman spectroscopy. As the laser flux is increased, new Raman lines associated to carbon-induced disorder are observed in the spectra.
    No preview · Article · Jan 2011 · MRS Online Proceeding Library
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    B. Kanté · R. Ghasemi · A. de Lustrac · J.-M. Lourtioz
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    ABSTRACT: Metamaterials building blocks, from microwave to optical range are mainly based on metal-dielectric composite. In almost all structures with true negative index (not coming from losses) two kind of meta-atoms (electric and magnetic) are mixed in order to drive simultaneously the effective permittivity and permeability to negative values and thus to obtain a negative index of refraction. In this paper we show that two coupled structures with localized plasmons modes (e.g. Cut wires or Split-Ring-Resonators) can exhibit negative refractive index by their own, by appropriately controlling the hybridization scheme of the so called plasmons modes. As a result, the metallic filling factor is drastically reduced and low losses especially at optical frequencies may allow realistic applications of metamaterials.
    Full-text · Article · Aug 2009 · Proceedings of SPIE - The International Society for Optical Engineering
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    ABSTRACT: The absence of a miniaturized integrated version of an optical isolator is an issue that is becoming increasingly important in view of the always higher levels of integration in photonic integrated circuits. It has been shown that the intrinsic strength of the magneto-optical (MO) effects, necessary to induce optical non-reciprocity (NR), can be strongly enhanced in photonic crystals (PhC).
    No preview · Conference Paper · Jul 2009
  • Boubacar Kanté · André de Lustrac · Jean Michel Lourtioz
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    ABSTRACT: In-plane coupling between the second plasmonic mode of split ring resonators and delocalized plasmons of nanowires is experimentally demonstrated from far-field measurements in metasurfaces with critical separation distances between nanostructures. Near-field calculations show that coupling drastically depends on both “meta-atom” shapes and separation distances. The associated field enhancement reveals these metasurfaces as good candidates for applications to sensing and surface enhanced spectroscopy.
    No preview · Article · Jun 2009 · Physical review. B, Condensed matter
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    B. Kanté · A. de Lustrac · J.-M. Lourtioz
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    ABSTRACT: Metamaterials in infrared and optical domain are mainly based on metal-dielectric composite. Collective excitations also called surface plasmons are thus the main mechanism in infrared metamaterials structures. Taking profit of the plasmonic interpretation instead of LC circuit approaches (better suited for microwave experiment) new approaches in understanding and engineering resonances is possible. In this paper we show numerically and experimentally how certain metamaterials can open opportunities in the engineering of plasmonic modes at the nanoscale for application including sensing and SERS (surface enhanced Raman Spectroscopy).
    Full-text · Article · May 2009 · Proceedings of SPIE - The International Society for Optical Engineering
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    B. Kanté · A. de Lustrac · J.-M. Lourtioz
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    ABSTRACT: Man made artificial materials or metamaterials have attracted in the recent years a huge amount of interest owing to their potentials applications. Among these, we can cite perfect lens [1], hyper lens [2], electromagnetic cloak [3-7] and applications in non linear and/or guided optics [9-10]. In this paper we present and review some applications of infrared metallo- dielectric metamaterials developed in our group including the design of novel low loss negative index metamaterials, realistic cloaking in the infrared [7], sensing [8-9] and applications in non linear and/or guided optics [9-10] The basic physics of each presented application is reviewed and the use of these applications on functional photonic device is discussed.
    Full-text · Article · May 2009 · Proceedings of SPIE - The International Society for Optical Engineering
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    B. Kanté · S. N. Burokur · A. Sellier · A. de Lustrac · J.-M. Lourtioz
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    ABSTRACT: The hybridization scheme of plasmon modes in cut-wire-based left-handed metamaterials is shown to critically depend on the coupling between paired cut wires. We show that an inverted hybridization scheme obtained with an asymmetric alignment of paired cut wires is the most appropriate to negative refraction. This is validated (numerically and experimentally) by the first demonstration of negative refraction in the microwave domain using only periodic ensembles of cut wires.
    Full-text · Article · Feb 2009 · Physical review. B, Condensed matter
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    ABSTRACT: Magneto photonic crystals exhibit unique combination of magneto-optical nonreciprocity and resonant behavior originating from periodic structure. Modeling of magneto photonic structures requires inclusion of magnetic induced anisotropy and description of medium using a permittivity tensor. On the other hand, differential theory of periodic gratings based on Fourier expansion of permittivity tensor and electromagnetic field is recently frequently applied. In this paper we propose an approach of effective propagation constant calculation from scattering matrix of the waveguide consisting of the anisotropic magneto-optical lamellar grating. The structure is modeled using Rigorous Coupled Wave Analysis (RCWA) extended by Fourier factorization method. The approach is applied to optimize parameters of integrated magneto-optic waveguide isolator with lamellar grating from magneto-optic medium at transverse geometry.
    Full-text · Article · Nov 2008 · Proceedings of SPIE - The International Society for Optical Engineering
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    B Kanté · S N Burokur · F Gadot · A De Lustrac · J M Lourtioz
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    ABSTRACT: In this paper, metamaterials made of gold on silicon are considered. We demonstrate experimentally and numerically how the near field distribution in infrared metal-dielectric metamaterials can lead to a better understanding and classification of the resonances through a geometric modification of SRR (Split Ring Resonators). The result of numerical simulations and experiment are compared and show very good agreement. To the best of our knowledge, the structures considered here have not been studied in the infrared domain yet. Our experimental results show that higher order excitation modes are more difficult to excite experimentally.
    Full-text · Conference Paper · Aug 2008
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    ABSTRACT: An integrated isolator in a semiconductor waveguide version is a key device for enabling laser insertion in photonic integrated circuits or packaged laser cost reduction. We propose in this paper a new InP-based isolator concept capable of isolation effect enhancement and current consumption reduction with respect to a previously developed ferromagnetic semiconductor optical isolator. The device principle and a first theoretical proof are presented, along with the novel modelisation approach.
    No preview · Conference Paper · Jun 2008
  • J M Lourtioz
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    ABSTRACT: Recent results obtained on semiconductor-based photonic crystal devices are of great promise for future developments of photonic crystals and their applications to 'all-photonic' integrated circuits. Device performance mostly relies on the strong confinement of light thanks to photonic bandgap effects, but photonic crystals also exhibit remarkable dispersion proper-ties in their transmission bands, thus opening the perspective of new optical functionalities. Slow light, supercollimation, superprism, and negative refraction effects are among the fascinating phenomena which strongly motivate the community. Studies in these directions parallel those on metamaterials, which are expected to provide a simultaneous control of the dielectric permittivity and of the magnetic permeability. In this article, we briefly review some important advances on photonic crystals and metamaterials, as these two topics received a particular attention during the "Nanosciences et Radioelectricite" workshop organized by CNFRS in Paris on the 20th and 21st of March 2007.
    No preview · Article · Jan 2008 · Comptes Rendus Physique
  • F. Gadot · B. Belier · A. Aassime · J. Mangeney · A. de Lustrac · J.-M. Lourtioz
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    ABSTRACT: Periodic arrays of gold wires and split ring resonators (SRR) with a minimum feature size of 50nm are fabricated on low-doped silicon. To our knowledge, the periodic arrangement of SRRs and wires considered in this work has not been studied in the near-infrared domain yet. For normal-incidence conditions, this metamaterial structure exhibits resonances at 70 and 170THz (i.e., at λ ≈ 4.3 and 1.75μm), which are identified as LC- and Mie resonances, respectively. These resonances are also observed for the SRRs alone, but the amplitude of the Mie resonance is reinforced due to the coupling between the SRRs and wires. The structure is simulated using finite-element software, while transmission and reflection measurements are performed with a Fourier transform infrared spectrometer. Numerical simulations are found to be in very good agreement with experimental characterizations, thereby showing that the Drude model used in calculations is well suited to simulate gold structures at near-infrared frequencies. Theoretical calculations predict that the metamaterial has a negative permittivity and a negative permeability near each resonance.
    No preview · Article · Feb 2007 · Optical and Quantum Electronics
  • A. Djermoun · A. De Lustrac · J.-M. Lourtioz
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    ABSTRACT: In this study, we propose guidelines to optimize the transmission and bandwidth of left handed materials (LHM) composed of two-dimensional lattice of metallic wires interleaved with double split ring resonators (SRRs). Several LHM structures are fabricated to test the proposed rules of design and operate between 7 and 14GHz. In a first step, we show that adding extra SRR layers within each period of wire layers (i.e. interleaving the wire lattice with several SRR lattices) increases the transmittance of the material. In a second step, we demonstrate that adding extra SRR layers in a non-equidistant manner (i.e. inserting several SRR lattices shifted one another by different distances) widens the LHM frequency bandwidth. The results of experimental characterization are found to be in excellent agreement with theoretical predictions. A LHM behavior is obtained in a wide frequency band of ∼1GHz around 8.2GHz with a transmission of −1.2dB measured at resonance. The negative refraction of the material is verified from measurements at oblique incidence.
    No preview · Article · Feb 2007 · Photonics and Nanostructures - Fundamentals and Applications
  • A. Ourir · A. de Lustrac · J.‐M. Lourtioz
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    ABSTRACT: Artificial magnetic conductors (AMC) are proposed for the fabrication of subwavelength cavities in the microstrip technology. These metamaterials can simultaneously present a low phase value at reflection and a high impedance for normal incident waves over a wide frequency band. Planar cavities using AMC-based reflectors are applicable to the design of ultracompact directive antennas. An optimized cavity structure is presently shown to provide a significant enhancement of the gain and directivity of a microstrip antenna near 10 GHz. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2573–2577, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21996
    No preview · Article · Dec 2006 · Microwave and Optical Technology Letters
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    ABSTRACT: The authors show that the use of triangular lattice photonic crystals (PhCs) with wide holes can significantly improve the lasing performances of PhC waveguides in the InP substrate approach. The study is carried out on W2-3 waveguides made in PhCs whose air filling factor is varied from ∼ 25% to 55%. Intrinsically single-mode laser emissions with reduced threshold (/2) are obtained when the laser mode folds deeply into the gap. Concurrently, the slope of the light-light characteristic is increased by a factor of 14. The laser spectral behavior and threshold evolution are explained from three-dimensional finite difference time domain calculations.
    Full-text · Article · Aug 2006 · Applied Physics Letters

Publication Stats

3k Citations
289.89 Total Impact Points

Institutions

  • 1990-2011
    • French National Centre for Scientific Research
      Lutetia Parisorum, Île-de-France, France
  • 1977-2009
    • Université Paris-Sud 11
      • Institut d'Electronique Fondamentale
      Orsay, Île-de-France, France
  • 1987-2006
    • Institute of Fundamental Electronics
      Orsay, Île-de-France, France
  • 1988
    • Institut Supérieur d’Electronique de Paris
      Lutetia Parisorum, Île-de-France, France