Linear-frequency conversion with time-varying metasurfaces

Autor: Claude Amra, Ali Passian, Philippe Tchamitchian, Mauro Ettorre, Ahmed Alwakil, Juan Antonio Zapien, Paul Rouquette, Yannick Abautret, Myriam Zerrad

Publikováno v: Physical Review Research, Vol 6, Iss 1, p 013002 (2024)

Frequency conversion is a hallmark of nonlinearity. The spectral manifestations, emergent within a system, can typically be attributed to a marked nonlinearity within the material properties, complex geometric configurations, and/or the unique functi

Externí odkaz: https://doaj.org/article/81c65f2a56ad471783e81a693505ede2

Self-Healing Analysis of Distorted Weakly-Diffracting Vector Beams

Autor: Ravel C. M. Pimenta, Gabriel Soriano, Konstantinos D. Paschaloudis, Mauro Ettorre, Myriam Zerrad, Claude Amra

Publikováno v: 2023 17th European Conference on Antennas and Propagation (EuCAP).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d6cea4582f9d8bf4302f6a1a4e246887
https://doi.org/10.23919/eucap57121.2023.10133425

Low coherence interferometric detection of the spectral dependence of the retro-reflection coefficient of an anti-reflective coated interface

Autor: Michel Lequime, Imran Khan, Myriam Zerrad, Claude Amra

The measurement of very low reflection coefficients of anti-reflective coated interfaces has become a key issue for the realization of precision instruments such as the giant interferometers used for the detection of gravitational waves. We propose i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbeac4a172bb2d6a4ee7bf0ecf51569b
http://arxiv.org/abs/2211.16013

Analysis of the multilayer organization of a sunflower leaf during dehydration with terahertz time-domain spectroscopy

Autor: Yannick Abautret, Dominique Coquillat, Michel Lequime, Myriam Zerrad, Claude Amra

Publikováno v: Optics Express
Optics Express, 2022, 30 (21), pp.37971. ⟨10.1364/oe.463228⟩
Optics Express, Optical Society of America-OSA Publishing, 2022, 30 (21), pp.37971. ⟨10.1364/OE.463228⟩

International audience; We apply reverse engineering techniques (RET) to analyze the dehydration process of a sunflower leaf with terahertz time-domain spectroscopy. The multilayer structure of the leaf is extracted with accuracy during the entire pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1cf030e56471113bd4e3869d19ee78bd
https://hal.science/hal-03869090/document

Instantaneous measurement of surface roughness spectra using white-light scattering projected on a spectrometer

Autor: Xavier Buet, Myriam Zerrad, Michel Lequime, Gabriel Soriano, Jean-Jacques Godeme, Jalal Fadili, Claude Amra

Publikováno v: OSA Applied Optics--Information Processing
OSA Applied Optics--Information Processing, In press, 62 (7), pp.B164-B169. ⟨10.1364/AO.477196⟩

Following on from previous studies on motionless scatterometers based on the use of white light, we propose a new, to the best of our knowledge, experiment of white-light scattering that should overtake the previous ones in most situations. The setup

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ae0746cee8ed098e3ba6fd7e7c2aa43
https://doi.org/10.1364/ao.477196