Search Results - "Coutaz, J."

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  1. 1

    Surface-state-related carrier dynamics of GaAs determined by UV-visible pump-probe terahertz spectroscopy by Zhai, D., Hérault, E., Garet, F., Coutaz, J.-L.

    Published in Applied physics letters (15-04-2024)
    “…The surface velocity and the bulk lifetime of photo-excited free carriers in GaAs were measured using an optical-pump and THz-probe time-domain technique. By…”
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    Journal Article
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    Assessment of erosion and settling properties of fine sediments stored in cobble bed rivers: the Arc and Isère alpine rivers before and after reservoir flushing by Legout, C., Droppo, I.G., Coutaz, J., Bel, C., Jodeau, M.

    Published in Earth surface processes and landforms (01-05-2018)
    “…Cohesive sediment dynamics in mountainous rivers is poorly understood even though these rivers are the main providers of fine particles to the oceans. Complex…”
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    Journal Article
  4. 4

    Terahertz Surface Waves Propagating on Metals with Sub-wavelength Structure and Grating Reliefs by Nazarov, M., Coutaz, J.-L.

    “…Due to their long propagation length at a metal surface in the far infrared, surface plasmons make potentially feasible the design and realization of 2D…”
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  5. 5

    High order kinoforms as a broadband achromatic diffractive optics for terahertz beams by Suszek, J, Siemion, A M, Błocki, N, Makowski, M, Czerwiński, A, Bomba, J, Kowalczyk, A, Ducin, I, Kakarenko, K, Pałka, N, Zagrajek, P, Kowalski, M, Czerwińska, E, Jastrzebski, C, Świtkowski, K, Coutaz, J-L, Kolodziejczyk, A, Sypek, M

    Published in Optics express (10-02-2014)
    “…We discuss thin optical structures that allow chromatic aberrations to be avoided in the THz domain. The paper contains the theoretical considerations,…”
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    Journal Article
  6. 6

    A reliable method for extraction of material parameters in terahertz time-domain spectroscopy by Duvillaret, L., Garet, F., Coutaz, J.-L.

    “…This paper introduces a novel method that allows fast and reliable extraction of material parameters in terahertz time-domain spectroscopy. This method could…”
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  7. 7

    Analytical modeling and optimization of terahertz time-domain spectroscopy experiments, using photoswitches as antennas by Duvillaret, L., Garet, F., Roux, J.-F., Coutaz, J.-L.

    “…From classical charge transport equations and dipole radiation equations, we derive a simple analytical model for the signal detected in terahertz time-domain…”
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  8. 8

    Determination of the DC Electrical Conductivity of Multiwalled Carbon Nanotube Films and Graphene Layers from Noncontact Time-Domain Terahertz Measurements by Dadrasnia, E., Lamela, H., Kuppam, M. B., Garet, F., Coutaz, J.-L.

    Published in Advances in condensed matter physics (01-01-2014)
    “…Measuring the DC conductivity of very thin films could be rather difficult because of the electrical contact issue. This DC conductivity can, however, be…”
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    Journal Article
  9. 9

    Thin-film characterization by terahertz time-domain spectroscopy using grating-assisted excitation of guided modes by Laamiri, Y., Garet, F., Coutaz, J.-L.

    Published in Applied physics letters (16-02-2009)
    “…Using a grating coupler, the guided modes of a dielectric slab can be efficiently excited by a terahertz beam delivered by a classical terahertz time-domain…”
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    Journal Article
  10. 10

    Peculiarities of terahertz spectra of layered TlInS2 crystals by Sardarly, R. M., Badalov, A. Z., Abdullaev, A. P., Vezirova, T. N., Garet, F., Coutaz, J.-L., Oruzhova, A. A.

    Published in Physics of the solid state (2016)
    “…Vibrational spectra of TlInS 2 crystals in the terahertz frequency range (0.1–3 THz) have been obtained and analyzed. The observed low-frequency band is…”
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    Journal Article
  11. 11

    THz surface plasmon jump between two metal edges by Nazarov, M., Coutaz, J.-L., Shkurinov, A., Garet, F.

    Published in Optics communications (01-09-2007)
    “…We excite surface plasmon in the THz frequency range at a metal surface using a diffraction grating coupler. Then the excited surface plasmon propagates along…”
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    Journal Article
  12. 12

    Independent determination of the complex refractive index and wave impedance by time-domain terahertz spectroscopy by Němec, H., Kadlec, F., Kužel, P., Duvillaret, L., Coutaz, J.-L.

    Published in Optics communications (01-04-2006)
    “…We present a method for simultaneous determination of the refractive index and wave impedance – or equivalently of the dielectric permittivity and magnetic…”
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    Journal Article
  13. 13

    Vectorial electric field measurement using isotropic electro-optic crystals by Gaborit, G., Coutaz, J.-L., Duvillaret, L.

    Published in Applied physics letters (11-06-2007)
    “…The authors present a two-component electric field measurement using a single electro-optic crystal and a single laser probe beam. This vectorial electric…”
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    Journal Article
  14. 14

    Transmission properties and band structure of a segmented dielectric waveguide for the terahertz range by Němec, H., Kužel, P., Coutaz, J.-L., Čtyroký, J.

    Published in Optics communications (01-05-2007)
    “…In this paper we investigate the band structure of guided modes in a segmented planar waveguide for the terahertz range. The dispersion curves are obtained…”
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    Journal Article
  15. 15

    Study of the Transmission of Subwavelength Metallic Grids in the THz Frequency Range by Armand, D., Todorov, Y., Garet, F., Minot, C., Coutaz, J.-L.

    “…We report on the transmission of terahertz (THz) electromagnetic waves through gold grids evaporated over a transparent silicon substrate. We observe a…”
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    Journal Article
  16. 16

    Study of Optoelectronic Sampler Linearity for Analog-to-Digital Conversion of RF Signals by Delord, J.-M., Roux, J.-F., Coutaz, J.-L., Breuil, N.

    Published in IEEE photonics technology letters (01-10-2009)
    “…Photoconductive sampling of 10-GHz radio- frequency (RF) signal is demonstrated using interdigitated photoswitches made from low-temperature grown GaAs. We…”
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    Journal Article
  17. 17

    Terahertz polarimetric emission and detection using a cubic crystal by Gaborit, G., Bernier, M., Biciunas, A., Coutaz, J.-L

    “…Summary form only given. Antenna based on semi-conductors or non-linear crystals can be exploited to generate or to characterize electric (E) field in the…”
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    Conference Proceeding
  18. 18

    THz Spectroscopy Using Low Temperature Mesoscopic Devices by Dell’Anna, M., Antonov, V., Bagliani, D., Biasotti, M., Coutaz, J. L., Gatti, F., Kiviranta, M., Kubatkin, S., Otto, E., Sypek, M., Spasov, S.

    “…The prototype of a THz spectroscopic camera based on low temperature mesoscopic devices is presented. The core of this system is an array of Quantum-Dots…”
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    Journal Article
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    Electrooptic probe based on an organic microcavity by Gaborit, G., Martin, G., Duvillaret, L., Coutaz, J.-L., Chi Thanh Nguyen, Hierle, R., Zyss, J.

    Published in IEEE photonics technology letters (01-10-2005)
    “…We present the concept of an electrooptic (EO) probe based on a thin organic layer of DR1-PMMA embedded in a high finesse Fabry-Pe/spl acute/rot cavity with…”
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    Journal Article
  20. 20

    Photo-carrier dynamics in UV-visible pumped GaAs studied by time-resolved THz spectroscopy by Zhai, D., Herault, E., Garet, F., Coutaz, J.-L.

    “…We present a UV-visible pump/THz-probe study to determine the photo-carrier lifetime in GaAs. Three samples ( , and oriented) were pumped from 1.56 eV to 4.15…”
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    Conference Proceeding