Search Results - "Coutaz, J."
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Surface-state-related carrier dynamics of GaAs determined by UV-visible pump-probe terahertz spectroscopy
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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Terahertz biophotonics as a tool for studies of dielectric and spectral properties of biological tissues and liquids
Published in Progress in quantum electronics (01-11-2018)“…In this review, we describe dielectric properties of biological tissues and liquids in the context of terahertz (THz) biophotonics. We discuss a model of the…”
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3
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
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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4
Terahertz Surface Waves Propagating on Metals with Sub-wavelength Structure and Grating Reliefs
Published in Journal of infrared, millimeter and terahertz waves (01-10-2011)“…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
High order kinoforms as a broadband achromatic diffractive optics for terahertz beams
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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6
A reliable method for extraction of material parameters in terahertz time-domain spectroscopy
Published in IEEE journal of selected topics in quantum electronics (01-09-1996)“…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
Analytical modeling and optimization of terahertz time-domain spectroscopy experiments, using photoswitches as antennas
Published in IEEE journal of selected topics in quantum electronics (01-07-2001)“…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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Determination of the DC Electrical Conductivity of Multiwalled Carbon Nanotube Films and Graphene Layers from Noncontact Time-Domain Terahertz Measurements
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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9
Thin-film characterization by terahertz time-domain spectroscopy using grating-assisted excitation of guided modes
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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10
Peculiarities of terahertz spectra of layered TlInS2 crystals
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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11
THz surface plasmon jump between two metal edges
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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12
Independent determination of the complex refractive index and wave impedance by time-domain terahertz spectroscopy
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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13
Vectorial electric field measurement using isotropic electro-optic crystals
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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14
Transmission properties and band structure of a segmented dielectric waveguide for the terahertz range
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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15
Study of the Transmission of Subwavelength Metallic Grids in the THz Frequency Range
Published in IEEE journal of selected topics in quantum electronics (01-03-2008)“…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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16
Study of Optoelectronic Sampler Linearity for Analog-to-Digital Conversion of RF Signals
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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17
Terahertz polarimetric emission and detection using a cubic crystal
Published in 2015 IEEE International Conference on Plasma Sciences (ICOPS) (01-05-2015)“…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 -
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THz Spectroscopy Using Low Temperature Mesoscopic Devices
Published in Journal of low temperature physics (2012)“…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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19
Electrooptic probe based on an organic microcavity
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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20
Photo-carrier dynamics in UV-visible pumped GaAs studied by time-resolved THz spectroscopy
Published in 2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) (29-08-2021)“…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