Search results for "coherent detection"

showing 2 items of 2 documents

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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