Free induction decay signals stimulated by photomixing

Fuanki Bavedila (1) , Guillaume Ducournau (1, 2) , Jean-Francois Lampin (1, 2) , Emilien Peytavit (1, 2) , A. Cuisset (3) , Gaël Mouret (3) , Cyril Bray (4) , Robin Bocquet (3) , F. Hindle (3)

1 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
2 PHOTONIQUE THZ - IEMN - Photonique THz - IEMN
3 LPCA - Laboratoire de Physico-Chimie de l'Atmosphère
4 Institut des Sciences Moléculaires (Bordeaux)

An optically driven photoconductor device is electrically pulsed to provide a powerful pulse around 206 GHz. The pulsed radiation polarizes the OCS gas which emits a free induction decay signal that is observed after the end of the pulse. This is the first step in the development of a photonic chirped pulsed spectrometer.

Mots clés: Chirp; Optical devices; Photoconducting materials; Bars; High-speed optical techniques; Stimulated emission; Optical polarization

Domaines: Physique [physics]; Sciences de l'ingénieur [physics]

Fuanki Bavedila, Guillaume Ducournau, Jean-Francois Lampin, Emilien Peytavit, A. Cuisset, et al.. Free induction decay signals stimulated by photomixing. IRMMW-THz 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves, Sep 2019, Paris, France. ⟨10.1109/IRMMW-THz.2019.8874516⟩. ⟨hal-02323479⟩