All-fiber continuous wave coherent homodyne terahertz spectrometer operating at 1.55 μm wavelengths

Guillaume Ducournau (1) , Alexandre Beck (1) , Karine Blary (1) , Emilien Peytavit (1) , Mohammed Zaknoune (1) , Tahsin Akalin (1) , Jean-Francois Lampin (1) , Matthieu Martin (2) , Juliette Mangeney (2)

1 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
2 IEF - Institut d'électronique fondamentale

Room temperature homodyne and heterodyne THz detections are reported using an 1.55 mum-based THz source. The first experimental demonstration is a continuous wave terahertz homodyne detection, where THz emission is performed with an InGaAs/InP uni-travelling carrier photodiode monolithically integrated with a horn antenna. The coherent homodyne detection is achieved with an ion-irradiated InGaAs photoconductor integrated with a spiral antenna. Experimental results has been obtained up to 700 GHz with a good signal to noise ratio. The second experimental setup is a room temperature heterodyne detection with a Schottky mixer.

Mots clés: Spectroscopy; Temperature; Indium gallium arsenide; Photoconductivity; Stimulated emission; Optical mixing; Frequency; Optical modulation; Optical sensors; Signal to noise ratio

Domaines: Sciences de l'ingénieur [physics]

Guillaume Ducournau, Alexandre Beck, Karine Blary, Emilien Peytavit, Mohammed Zaknoune, et al.. All-fiber continuous wave coherent homodyne terahertz spectrometer operating at 1.55 μm wavelengths. 34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009, Sep 2009, Busan, South Korea. pp.1-2, ⟨10.1109/ICIMW.2009.5325577⟩. ⟨hal-00474424⟩