Emilien PEYTAVIT

Emilien PEYTAVIT

CNRS Senior Research Scientist (Directeur de Recherche CNRS)

Co-Leader of the « micro&nano Devices » Flagship Project

IEMN Laboratory - UMR 8520
Avenue Henri Poincaré
59652 Villeneuve d'Ascq
France
+33 (0)3 20 19 78 71
emilien.peytavit@univ-lille.fr

Emilien Peytavit earned his engineering degree from École Centrale de Lille in 1999 and a Ph.D. in Electronics from the University of Lille in 2002 for his work on terahertz wave generation via photomixing. As a postdoctoral researcher at CEA-LETI in Grenoble, France (2003–2005), he contributed to the development of microbolometer arrays for terahertz wave detection. Since 2005, he has continued his research at IEMN, first as a postdoctoral fellow (2005–2007) and then as a CNRS Research Scientist. He led the THz Photonics group from 2020 to early 2026. He is the author or co-author of over 200 publications in international journals and conferences and holds 3 patents.

His main research interests lie in THz electronics and optoelectronics, including:

Optoelectronic generation and detection of THz radiation
Ultrafast photodetectors with high saturation current
Integrated photonic circuits
THz waveguides and antennas

Recent Publications:
[1] New photodiodes ready to bridge optical and sub-THz communications, E. Peytavit, Nature Photonics, vol. 19, no. 12. Nature Publishing Group, pp. 1279–1281, Dec. 02, 2025, doi: 10.1038/s41566-025-01814-x.
https://www.nature.com/articles/s41566-025-01814-x
[2] Photonic THz mixers based on iron-doped InGaAs embedded in a plasmonic microcavity, Tannoury C., Merupo V., Di Gioia G., Avramovic V., Troadec D., Lampin J., Ducournau G., Globisch B., Barbieri S., Kohlhaas R., and Peytavit E.
APL Photonics 8, 116101 (2023).
https://doi.org/10.1063/5.0153046
[3] THz Photomixers, E. Peytavit, G. Ducournau, J.-F. Lampin, Fundamental of Terahertz Devices and Applications, pp. 137–186 (2021).
https://doi.org/10.1002/9781119460749.CH4
[4] Development of a millimeter-long travelling wave THz photomixer, Bavedila F., Tannoury C., Lin Q.Y., Lepilliet S., Avramovic V., Okada E., Yarekha D., Faucher M., Troadec D., Lampin J.F., Ducournau G., Loas G., Magnin V., Peytavit E.
J. Lightwave Technol. 39, 14 (2021) 4700-4709 .
https://doi.org/10.1109/JLT.2021.3078226
[5] Resonant cavities for efficient LT-GaAs photoconductors operating at λ = 1550 nm, Billet M. a), Latzel P., Pavanello F., Ducournau G., Lampin J.F., Peytavit E.
APL Photonics 1, 7 (2016) 076102, 8 pages
https://doi.org/10.1063/1.4954771