TERAMET

Despite considerable efforts from many laboratories, the generation of an agile and high spectral purity radiation in the terahertz (THz) region, arbitrarily defined as 0.3-10 THz (roughly 10-333 cm-1), remains not available. We propose to exploit recent progresses in the frequency stabilization (down to the Hz level) of DFB lasers at 1500 nm, patented by our collaborator (Samir Kassi, LiPHY, Grenoble), together with the commercially available rapid low-temperature grown InGaAs photomixers to generate a radiation in the 300-3000 GHz using the photomixing technique. Our new spectrometer will benefit from mature technology in the telecom range to provide an extremely high agility and spectral purity in the THz domain, opening new possibilities for ultra-high precision THz molecular spectroscopy.

Project partners:

This project is supported by a public grant from the Laboratoire d’Excellence Physics Atoms Light Mater (LabEx PALM) overseen by the French National Research Agency (ANR) as part of the Investissements d’Avenir program (ANR-10-LABX-0039-PALM).

Olivier Pirali
Olivier Pirali
Director of Research

My research interests includes high resolution molecular spectroscopy, laboratory astrophysics, and THz generation.

Marie-Aline Martin-Drumel
Marie-Aline Martin-Drumel
Researcher

My research interests focus on molecular spectroscopy of stable molecules and reactive species, and its applications for astrophysics and physical-chemistry.