0000000000092819

AUTHOR

Sebastien Delprat

showing 4 related works from this author

Invited Article: Ultra-broadband terahertz coherent detection via a silicon nitride-based deep sub-wavelength metallic slit

2018

We present a novel class of CMOS-compatible devices aimed to perform the solid-state-biased coherent detection of ultrashort terahertz pulses, i.e., featuring a gap-free bandwidth at least two decades-wide. Such a structure relies on a 1-µm-wide slit aperture located between two parallel aluminum pads, embedded in a 1-µm-thick layer of silicon nitride, and deposited on a quartz substrate. We show that this device can detect ultra-broadband terahertz pulses by employing unprecedented low optical probe energies of only a few tens of nanojoules. This is due to the more than one order of magnitude higher nonlinear coefficient of silicon nitride with respect to silica, the nonlinear material emp…

lcsh:Applied optics. PhotonicsMaterials scienceComputer Networks and CommunicationsTerahertz radiationTerahertz radiationPhysics::Optics02 engineering and technology7. Clean energy01 natural scienceslaw.invention010309 opticschemistry.chemical_compoundlawSolid-state devicesElectric field0103 physical sciencesBroadbandDynamic rangebusiness.industrylcsh:TA1501-1820021001 nanoscience & nanotechnologyLaserAtomic and Molecular Physics and OpticsTerahertz detectorSilicon nitridechemistryOptoelectronics0210 nano-technologybusinessOrder of magnitudeVoltageAPL Photonics
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Affordable, ultra-broadband coherent detection of terahertz pulses via CMOS-compatible solid-state devices

2017

We demonstrate the first fully solid-state technique for the coherent detection of ultra-broadband THz pulses (0.1-10 THz), relying on the electric-field-induced second-harmonic generation attained in integrated CMOS-compatible devices.

Materials sciencebusiness.industryTerahertz radiationSpectral densitySecond-harmonic generationSettore ING-INF/02 - Campi Elettromagnetici02 engineering and technology021001 nanoscience & nanotechnologySettore ING-INF/01 - Elettronica01 natural sciencesElectromagnetic radiationTerahertz spectroscopy and technologyOpticsNonlinear optics Ultrafast optics Far infrared or terahertz Solid state detectorsElectric field0103 physical sciencesBroadbandOptoelectronicsHeterodyne detection010306 general physics0210 nano-technologybusinessConference on Lasers and Electro-Optics
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Silicon nitride-based deep sub-λ slit for ultra-broadband THz coherent detection

2018

We report on the characterization of a new type of CMOS-compatible device for terahertz solid-state biased coherent detection, which relies on a 1-µm-wide metallic slit embedded in a thin film of PECVD-grown silicon nitride.

Materials scienceSiliconbusiness.industryTerahertz radiationTerahertzchemistry.chemical_elementNonlinear opticsSettore ING-INF/01 - Elettronica01 natural sciencesTerahertz spectroscopy and technologycoherent detection010309 opticschemistry.chemical_compoundsilicon nitridechemistrySilicon nitride0103 physical sciencesBroadbandOptoelectronicsHeterodyne detectionThin film010306 general physicsbusiness
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Solid-state-biased coherent detection of ultra-broadband terahertz pulses

2017

Significant progress in nonlinear and ultrafast optics has recently opened new and exciting opportunities for terahertz (THz) science and technology, which require the development of reliable THz sources, detectors, and supporting devices. In this work, we demonstrate the first solid-state technique for the coherent detection of ultra-broadband THz pulses (0.1-10 THz), relying on the electric-field-induced second-harmonic generation in a thin layer of ultraviolet fused silica. The proposed CMOS-compatible devices, which can be realized with standard microfabrication techniques, allow us to perform ultra-broadband detection with a high dynamic range by employing probe laser powers and bias v…

coherent detectionTA1501Nonlinear opticTerahertzFar infrared or terahertzFour-wave mixingUltrafast opticDevicePhysics::OpticsUltrafast laserSolid state detectorSettore ING-INF/01 - ElettronicaQC0350Optica
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