Patrick Mounaix
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View article: Terahertz generation from chirped and delayed laser pulses in a periodically poled lithium niobate waveguide
Terahertz generation from chirped and delayed laser pulses in a periodically poled lithium niobate waveguide Open
THz generation from chirped and delayed laser pulses using periodically poled lithium niobate (PPLN) traditionally requires high-energy sources and bulky PPLN crystals. However, for compact, integrated, and miniaturized THz-based applicati…
View article: Terahertz Frequency-Modulated Continuous-Wave Inspection of an Ancient Enamel Plate
Terahertz Frequency-Modulated Continuous-Wave Inspection of an Ancient Enamel Plate Open
This study investigates the application of terahertz frequency-modulated continuous-wave (FMCW) imaging for the non-destructive inspection of a historical enamel plate, using both reflection and transmission modes. A 300 GHz FMCW radar sys…
View article: Broadband THz emission of long pulses from photomixing process with optical chirped pulses
Broadband THz emission of long pulses from photomixing process with optical chirped pulses Open
Terahertz (THz) generation via photomixing on photoconductive antenna using twin delayed chirped pulses provides a long THz pulse with a narrow bandwidth. To generate a long pulse with a broad bandwidth, we propose a new, to the best of ou…
View article: Fourier synthetic-aperture-based time-resolved terahertz imaging
Fourier synthetic-aperture-based time-resolved terahertz imaging Open
Terahertz (THz) microscopy has attracted attention owing to distinctive characteristics of the THz frequency region, particularly non-ionizing photon energy, spectral fingerprint, and transparency to most nonpolar materials. Nevertheless, …
View article: Broadband THz emission of long pulses from photomixing process with optical chirped pulses
Broadband THz emission of long pulses from photomixing process with optical chirped pulses Open
Terahertz (THz) generation via photomixing on photoconductive antenna using twin delayed chirped pulses provides a long THz pulse with a narrow bandwidth. To generate a long pulse with broad bandwidth, we propose a new method that combines…
View article: Generation of broadband THz radiation by polariton parametric scattering in a LiNbO<sub>3</sub> waveguide
Generation of broadband THz radiation by polariton parametric scattering in a LiNbO<sub>3</sub> waveguide Open
Polariton scattering from the lowest A1-symmetry TO vibrational mode in lithium niobate presents a promising approach for generating THz radiations. Nevertheless, a notable challenge hindering this technique is the generation of frequencie…
View article: Fourier Synthetic Aperture-based Time-resolved Terahertz Imaging
Fourier Synthetic Aperture-based Time-resolved Terahertz Imaging Open
Terahertz microscopy has attracted attention owing to distinctive characteristics of the THz frequency region, particularly non-ionizing photon energy, spectral fingerprint, and transparency to most nonpolar materials. Nevertheless, the we…
View article: Broadband Terahertz generation in the sub-picosecond regime via polariton parametric scattering in a LiNbO<sub>3</sub> Waveguide
Broadband Terahertz generation in the sub-picosecond regime via polariton parametric scattering in a LiNbO<sub>3</sub> Waveguide Open
International audience
View article: Terahertz time-domain spectro-imaging and hyperspectral imagery to investigate a historical Longwy glazed ceramic
Terahertz time-domain spectro-imaging and hyperspectral imagery to investigate a historical Longwy glazed ceramic Open
In this paper, we present the potential of Terahertz Time-Domain Imaging (THz-TDI) as a tool to perform non-invasive 3D analysis of an ancient enamel plate manufactured by Longwy Company in France. The THz data collected in the reflection …
View article: THz radiation generation from polariton parametric scattering in a LiNbO3 waveguide
THz radiation generation from polariton parametric scattering in a LiNbO3 waveguide Open
National audience
View article: An algorithm of unordered wavefront propagation in terahertz phase retrieval with dense multiplane data acquisition
An algorithm of unordered wavefront propagation in terahertz phase retrieval with dense multiplane data acquisition Open
Iterative phase retrieval algorithms from multiple diffraction patterns in the terahertz (THz) frequency range are a promising tool of computational imaging capable of providing high spatial resolution of reconstructed phase images. One of…
View article: Ancient enamel plate characterized by Time domain spectro imaging
Ancient enamel plate characterized by Time domain spectro imaging Open
International audience
View article: Terahertz diffractive imaging with saturated data inpainting
Terahertz diffractive imaging with saturated data inpainting Open
Multiplane iterative phase retrieval is a promising approach to diffraction imaging, which accurately determines the topographic and internal characteristics of various objects. Nevertheless, the detection systems used often have a limited…
View article: Chirped Pulsed Four-Wave-Mixing Spectrogram Retrieval From Multiple Shot-to-Shot Spectral Measurements
Chirped Pulsed Four-Wave-Mixing Spectrogram Retrieval From Multiple Shot-to-Shot Spectral Measurements Open
International audience
View article: Feasibility of Using a 300 GHz Radar to Detect Fractures and Lithological Changes in Rocks
Feasibility of Using a 300 GHz Radar to Detect Fractures and Lithological Changes in Rocks Open
The detection and quantification of fractures in rocks, as well as the detection of lithological changes, are of particular interest in scientific fields, such as construction materials, geotechnics, reservoirs and the diagnostics of diele…
View article: Noise analysis in a seeded four-wave mixing process generated in a photonic crystal fiber pumped by a chirped pulse
Noise analysis in a seeded four-wave mixing process generated in a photonic crystal fiber pumped by a chirped pulse Open
Four-wave mixing is investigated when chirped pump and signal pulses are injected in a photonic crystal fiber. The shot-to-shot stability of the amplified coherent signal was measured by using the dispersive Fourier transform method and co…
View article: THz Pulse Generation and Detection in a Single Crystal Layout
THz Pulse Generation and Detection in a Single Crystal Layout Open
The THz pulse of a few picosecond durations have been generated and detected via optical rectification and electro-optic effect within the same ZnTe crystal. An unbalanced single-shot detection scheme was performed to characterize the sign…
View article: Skeletonization and 3D rendering with real time terahertz tomography
Skeletonization and 3D rendering with real time terahertz tomography Open
Terahertz technology (spanning between 0.1 and 10 THz) is now a well-established tool to achieve contactless sensing and non-destructive testing (NDT). Among the advanced approaches, THz computed tomography (THz CT) is an emerging techniqu…
View article: SPICE Modeling in Verilog-A for Photo-Response in UTC-Photodiodes Targeting Beyond-5G Circuit Design
SPICE Modeling in Verilog-A for Photo-Response in UTC-Photodiodes Targeting Beyond-5G Circuit Design Open
International audience
View article: Terahertz Nondestructive Testing with Ultra-Wideband FMCW Radar
Terahertz Nondestructive Testing with Ultra-Wideband FMCW Radar Open
This paper presents the development, performance, integration, and implementation of a 150 GHz FMCW radar based on a homodyne harmonic mixing scheme for noncontact, nondestructive testing. This system offers high-dynamic-range measurement …
View article: THz pulse generation and single shot detection in a single ZnTe Crystal IRMMW-THz 2022
THz pulse generation and single shot detection in a single ZnTe Crystal IRMMW-THz 2022 Open
International audience
View article: Advanced Data Processing For Tomography and 3D Rendering With Terahertz Waves
Advanced Data Processing For Tomography and 3D Rendering With Terahertz Waves Open
Terahertz technology (between 0.1 and 4 THz) is now a well-established tool to achieve contact- free and non-destructive testing (NDT). Among the technologies, THz CT and phase retrieval are emerging techniques which have been investigated…
View article: THz Spectroscopic Characterization of Oil Shales, IRMMW-THz 2022
THz Spectroscopic Characterization of Oil Shales, IRMMW-THz 2022 Open
Grey to dark-grey samples reported to be oil shales have been analyzed under the THz reflection and transmission spectroscopy. In order to examine the organic and mineral stratification of the oil shales, samples at varying height above th…
View article: Tunable ultra-fast infrared generation in a gas-filled hollow core capillary by a four-wave mixing process: erratum
Tunable ultra-fast infrared generation in a gas-filled hollow core capillary by a four-wave mixing process: erratum Open
This erratum reports corrections to the temporal axes in Figs. 12 and 13 of J. Opt. Soc. Am. B 39 , 662 ( 2022 ) JOBPDE 0740-3224 10.1364/JOSAB.444574 .
View article: THz generation and single shot detection in a single-crystal layout
THz generation and single shot detection in a single-crystal layout Open
International audience
View article: Access Modelling-based De-embedding Method for High-frequency Characterization of Uni-traveling carrier Photodiodes
Access Modelling-based De-embedding Method for High-frequency Characterization of Uni-traveling carrier Photodiodes Open
International audience
View article: Scanning point terahertz source microscopy of unstained comedo ductal carcinoma in situ
Scanning point terahertz source microscopy of unstained comedo ductal carcinoma in situ Open
Terahertz imaging is an emerging candidate to diagnose breast cancers in a label-free manner. However, detailed terahertz analysis of early stage breast cancers is difficult to achieve owing to its low spatial resolution. In this study, ut…