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Communication dans un congrès

Complex refractive indices in the TeraHertz domain of samples from atmospheric aerosol sources

Jeyan Bichon, Melanie Lavancier, Denis Petitprez, Alexandre Deguine, D. Hourlier-Bahloul, Karine Deboudt, Hervé Herbin, Guillaume Ducournau, Romain Peretti, Sophie Eliet

We report the TeraHertz (THz) characterization of calcium carbonate (CaCO3) particles, one of the major components of desert dust, to determine the real and imaginary parts of their complex refractive indices. The optical characterization is done by TeraHertz Time Domain Spectroscopy (THz-TDS)…

2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Aug 2021, Chengdu, China. pp.1163, ⟨10.1109/irmmw-thz50926.2021.9566988⟩. ⟨hal-03403999⟩

Communication dans un congrès

[Invited] Locking of terahertz semiconductor dual-comb laser sources

Hua Li, Yiran Zhao, Ziping Li, Kang Zhou, J. Cao, Dong Xu, S Barbieri

We report on an active stabilization of a terahertz quantum cascade laser (QCL) dual-comb source by phase locking one of the dual-comb lines. Although only one dual-comb line is locked, the phase noise of other dual-comb lines close to the phase locked line is significantly reduced. Furthermore, it…

2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Aug 2021, Chengdu, China. pp.1-2, ⟨10.1109/IRMMW-THz50926.2021.9567050⟩. ⟨hal-03448750⟩

Communication dans un congrès

Optimized optical cavity for maximal enhancement of terahertz spintronic emission

Pierre Kolejak, Geoffrey Lezier, Kamil Postava, Jean-Francois Lampin, Nicolas Tiercelin, Mathias Vanwolleghem

Spintronic terahertz emitters are recently developed broadband sources for THz applications based on the ultrafast spin-diffusion in ferromagnetic/nonmagnetic ultra-thin multilayers. We present the enhancement of the terahertz emission using the integration of an optimized SiO 2 /TiO 2 photonic…

2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Aug 2021, Chengdu, China. pp.1-2, ⟨10.1109/IRMMW-THz50926.2021.9566885⟩. ⟨hal-03584675⟩

Communication dans un congrès

New laser lines from a terahertz ammonia laser pumped by a quantum cascadelaser and their application to high-resolution spectroscopy

Jean-Francois Lampin, Marie-Hélène Mammez, Dominique Mammez, Thomas Hearne, Zachary Buchanan, Olivier Pirali, Marie-Aline Martin-Drumel, Guillaume Ducournau, Sophie Eliet, Francis Hindle, S Barbieri, Pascale Roy, Gaël Mouret

We present an experimental investigation into new continuous-wave laser lines from a terahertz ammonia laser pumped by a quantum cascade laser. These lines were investigated with the help of a molecular figure of merit calculated from spectroscopic parameters available in molecular databases. We…

2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Aug 2021, Chengdu, China. pp.1168, ⟨10.1109/IRMMW-THz50926.2021.9566884⟩. ⟨hal-03448763⟩

Communication dans un congrès

Up to 100 Gbit/s short link using 300 GHz band Yagi-Uda antenna

Aritrio Bandyopadhyay, Fabio Pavanello, Emilien Peytavit, Jean-Francois Lampin, Malek Zegaoui, Mohammed Zaknoune, P. Szriftgiser, Guillaume Ducournau

We report on the use of a Yagi-Uda antenna on polymer substrate used for indoor 300 GHz data-link applications. The Yagi-Uda antenna-based data-link is validated for up to QAM-16 signals (100 Gbit/s).

2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Aug 2021, Chengdu, China. pp.1-2, ⟨10.1109/IRMMW-THz50926.2021.9566991⟩. ⟨hal-03413395⟩

Communication dans un congrès

Finding the accurate permittivity model for liquid water and heavy water at different temperatures in the Terahertz range

Melanie Lavancier, Jean-Francois Lampin, Romain Peretti

We present a study of liquid water and heavy water in the terahertz range at temperatures between 283K and 348K. We will fit our data with the fit@TDS software that provides a criterion to discriminate good models from others. We will present a comparison between the models proposed in the…

2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Aug 2021, Chengdu, China. pp.1-2, ⟨10.1109/IRMMW-THz50926.2021.9567238⟩. ⟨hal-03584658⟩

Communication dans un congrès

Low-Temperature-grown GaAs photoconductors suitable for 1550nm-wavelength illumination

Charbel Tannoury, Maximilien Billet, Christophe Coinon, Jean-Francois Lampin, Emilien Peytavit

In this communication, we show that ultrafast photoconductors based on low-temperature-grown Gallium Arsenide material exhibit photoresponse values reaching 11 mA/W under 1550 nm CW excitation. This is obtained by using an optical microcavity based on a buried metal layer acting as back reflecting…

2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Aug 2021, Chengdu, China. pp.1-2, ⟨10.1109/IRMMW-THz50926.2021.9567204⟩. ⟨hal-03584631⟩

Communication dans un congrès

Antennas for a point to multi-point communication system operating in D-band

Giacomo Ulisse, Guillaume Ducournau, Viktor Krozer

Two different antennas were developed for a point to multi-point communication system operating in D-band (110- 170 GHz). The first is a horn antenna with a 20 dB gain and 30° horizontal radiation pattern. The second one is a horn antenna with a focusing dielectric lens that allows to reach a gain…

2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Aug 2021, Chengdu, China. pp.1-2, ⟨10.1109/IRMMW-THz50926.2021.9566917⟩. ⟨hal-03464858⟩

Communication dans un congrès

A Methodology to Estimate the Signal-to-Interference Power Ratio for Intermittent Disturbances

Artur Nogueira de São José, Eric Pierre Simon, Alexandre Boé, Thomas Vantroys, Christophe Gransart, Virginie Deniau

Estimating the signal-to-interference power ratio with traditional measuring equipment such as spectrum analyzers is not an easy task when the disturbance is intermittent. In these situations, the power may rapidly switch between its peak value and the equipment noise floor. As a consequence,…

XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS) 2021, Aug 2021, Rome, Italy. pp.1-4, ⟨10.23919/URSIGASS51995.2021.9560235⟩. ⟨hal-04127526⟩

Pré-publication, Document de travail

Mitigation of substrate coupling effects in RF switch by localized substrate removal using laser processing

Arun Bhaskar, Justine Philippe, Etienne Okada, Flavie Braud, J.F. Robillard, Cédric Durand, Frédéric Gianesello, Daniel Gloria, Christophe Gaquière, Emmanuel Dubois

With the evolution of radio frequency (RF)/microwave technology, there is a demand for circuits which are able to meet highly challenging RF frontend specifications. Silicon-on-insulator (SOI) technology is one of the leading platforms for upcoming wireless generation. The degradation of…

2021. ⟨hal-03350081⟩