AuthorJP

Paris Air Show 2019

As part of the Saphyr project, photonic and aeronautic prototypes from the Aquitaine region will be presented at the Paris Air show 2019. Visit our booth A120 Hall 4 to discuss terahertz waves applied to non-destructive testing. This project is in collaboration between the IMS laboratory (Laser & Terahertz Test Team) and R&D Vision.

What is Smartphonics

Origin of this word Smartphonics Smartphones have become ubiquitous objects in the daily lives of students. Rather than using them for entertainment, why not take advantage of this object to impart knowledge, experiment and teach? We use the word Smartpnonics in the context of using the smartphone for education, and not as a smartphone study…

NearSense – Advances Towards a Silicon-Based Terahertz Near-Field Imaging Sensor for Ex Vivo Breast Tumour Identification

This paper present the terahertz near field resonator developed in the framework of Nearsense project and pulse time domain images used to determine the best frequency and design the resonator. Mavarani, L., Hillger, P., Bücher, T., Grzyb, J., Pfeiffer, U. R., Cassar, Q., … & MacGrogan, G. (2018). NearSense–Advances Towards a Silicon-Based Terahertz Near-Field Imaging…

A Solid-State 0.56 THz Near-Field Array for μM-Scale Surface Imaging

We This paper presents a fully-integrated 0.56 THz 128-pixel near-field 1-D sensor array with 10-12 μm lateral resolution. The sensing elements are based two parallel cross-bridged split-ring resonators that utilize a 3-D topology to exhibit high field confinement in the sensing spot. The sensor comprises a scalable excitation scheme that is designed to maximize the…

Study of blood plasma optical properties in mice grafted with Ehrlich carcinoma in the frequency range 0.1 – 1.0 THz

In the course of in vitro studies of blood of laboratory animals with progressing Ehrlich carcinoma, we have revealed the change of the blood plasma optical properties in the THz range, which can be used for developing the express diagnostics of the presence of oncological diseases. An applied software package is elaborated that allows the…

Terahertz biophotonics as a tool for studies of dielectric and spectral properties of biological tissues and liquids

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 THz dielectric permittivity of water and water-containing media, which yields analysis of the relaxation and damped resonant molecules modes. We briefly describe modern techniques of THz spectroscopy and imaging employed in biophotonics with a strong emphasize on a…

Terahertz frequency modulated continuous wave imaging advanced data processing for art painting analysis

In this paper, we focus on data processing applied to terahertz FMCW measurement of a painting. Investigated paintings FMCW radar processing The proposed approach consist to use longitudinal information of FMCW signal to adjust amplitude. This calibration process was tested on a stepped target and then on the investigated painting, giving a more homogeneous result,…

What is terahertz?

Terahertz frequency band Terahertz (THz) waves is a part of the electromagnetic spectrum between infrared and microwave radiation corresponding to wavelenghts from 3 mm to 100 µm. In the frequency domain, it consists of the band from 100 GHz to 30 THz (See Fig 1.). For 1 Thz, wavelenght is about 300 µm, photo energy…

Terahertz Spectroscopy and Quantum Mechanical Simulations of Crystalline Copper-Containing Historical Pigments

Terahertz spectroscopy is a non-destructive analytical technique used in art conservation and restoration. It can provide compelling data concerning the composition and condition of culturally valuable and historical objects. Terahertz spectral databases of modern and ancient artists’ pigments exist, but lack explanations for the origins of the unique spectral features. This paper present terahertz spectra…

Jean-Paul Guillet

Welcome to my personal website! It presents my research activities at IMS laboratory in Bordeaux University and teaching at Bordeaux University Institute of Technology. You can find my list of publications or list of topics. To learn more about my research activities at IMS Laboratory, you can visit the Laser & terahertz test team website…

Processing sequence for non-destructive inspection based on 3D terahertz images

In this paper, a processing sequence has been developed to achieve automated analysis and measurements from 3D terahertz acquisitions. This sequence first performs a tomographic reconstruction from a 3D acquisition made by a continuous millimetre wave system. This reconstruction is based on the Ordered Subsets Convex (OSC) algorithm and has been optimized for 3D THz…

Terahertz radiation for tomographic inspection

This paper demonstrate how it is possible to take into account the physical properties of THz waves used in THz CT scan imaging as an improved beam propagation model. This more realistic model is clearly justified by the fact that previous models were simply relying on well-known and commonly applied X-ray reconstruction methods, which assume…

Near-field wire-based passive probe antenna for the selective detection of the longitudinal electric field at terahertz frequencies

Adam, R., Chusseau, L., Grosjean, T., Penarier, A., Guillet, J. P., & Charraut, D. (2009). Near-field wire-based passive probe antenna for the selective detection of the longitudinal electric field at terahertz frequencies. Journal of Applied Physics, 106(7), 073107.

Biography

Jean-Paul Guillet was born in Lyon, France in 1984. He is graduated from Montpellier University. He received the M.Sc and Ph.D degres in 2007 and 2010 in terahertz imaging from IES lab, Montpellier, France. The topic of this first research work was terahertz near field microscopy using electronics based components. During postdoc up to 2013,…

Scientific networks

You can follow me via these networks: Scientific online networks and search engines Google Scholar Scientific journal search engine Google scholar is the best scientific search engine. You can use it to display all you paper. My Google Scholar page is https://scholar.google.fr/citations?user=Te3MRH8AAAAJ&hl=fr Researchgate The main research network ResearchGate is a free social network service for…

Art Painting Diagnostic Before Restoration with Terahertz and Millimeter Waves

Introduction Terahertz time domain imaging, FMCW and spectroscopy are useful tools for art restorer to inspect paintings and other cultural. Thanks to the different terahertz equipments present on the terahertz platform in Bordeaux, we have set up collaborations with art restorers and researchers working on the analysis of works of art with terahertz. This article presents…

Karnaugh map

Karnaugh map is a graphic method allowing to find the logical equation from a truth table. This free educative android application shows graphically the resolution of Karnaugh map. Download Karnaugh Map (free Android application) in Google Play Store

Coupling and propagation of Sommerfeld waves at 100 and 300 GHz

The coupling between a linearly-polarized gaussian beam and a Sommerfeld wave propagating on a circular metallic wire is obtained owing to a differential phase element inserted in front of the metal wire. At millimeter-wavelengths we calculate a theoretical maximum coupling efficiency of 32% for this system in spite of the metal nature and radius in…

Contact

My research part is at IMS la, the Bordeaux University, in the Laser&Terahertz Test Team. My teaching part is at IUT de Bordeaux. IMS Lab (research) Université de Bordeaux,Laboratoire IMS,351, cours de la Libération33405 Talence Cedex, France Tel +33 (0)5 40 00 21 11Fax +33 (0)5 40 00 66 44 Laser team website:IMS lab website: http://www.ims-bordeaux.fr IUT de…