Isabelle SAGNES, PhD, HDR
Phone (+33) 1 70 27 04 63
Office C.219
ORCID 0000-0001-8068-6599


Isabelle Sagnes received her Ph.D. in physics in 1994 on the electro-optical properties of epitaxial Si/SiGe heterostructures on silicon. She first joined CNET in Grenoble as a research engineer, working on 0.18µm CMOS technology. In 1998, she joined the CNRS and integrated its Laboratoire de Photonique et de Nanostructures (LPN, UPR 20), now the Centre de Nanoscience et de Nanotechnologies (C2N, UMR 9001 - CNRS Université Paris-Saclay). As a CNRS senior research scientist, she is the head of the MOVPE team of the C2N. Her research activities can be divided in two main categories:

  • Complex heterostructures based on mature GaAs and InP technologies, mainly  GaAs-based vertical external-cavity surface-emitting lasers (VECSEls) and for Quantum Cascade Devices (QCL, QCD, QWIP) based on the InGaAs/InAlAs system on InP for the 5-12µm range.
  • Emerging materials for photonics, including GaP for nonlinear photonics and (Si)GeSn for CMOS-compatible NIR/MIR emitters and detectors.

With her MOVPE team, she has published more than 445 articles in peer reviewed journals, holds 4 patents and  actively participates in a multitude of French and European projects, often in collaboration with the Department of Photonics of the C2N. She has numerous collaborations, both within academia (LP-ENS, UMPhy, ONERA, CEA LETI, IES, IMEC) and with major french industrial groups (Thales, ST Microelectronics, Lynred, SOITEC) and start-ups (Innoptics, Quandela).

Since 2012, she coordinates the French network RENATECH ( for the CNRS, the French nationwide network of academic cleanroom facilities specialized in micro and nanofabrication. A full list of the projects she is currently involved in can be found on the webpage of the C2N MOCVD team, here.

Involved in MOCVD for Photonics


Also at

  1 av. Augustin Fresnel 91120, Palaiseau FRANCE
  +33 1 69 41 59 94