Terahertz near-field imaging using a Y splitter and Sommerfeld wire waves on bare metal rods

Jean-Paul Guillet (1) , Laurent Chusseau (1, 2) , R. Adam (1) , T. Laurent (1) , T. Grosjean (3) , D. Charraut (3) , A. Pénarier (1, 4)

1 IES - Institut d’Electronique et des Systèmes
2 RADIAC - Radiations et composants
3 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)
4 TéHO - Térahertz, hyperfréquence et optique

We describe a near-field experiment using a Y splitter supporting cw THz Sommerfeld wire modes coupled and de-coupled with differential phase plates. Owing to a taper up to similar to 50 mu m of one of the Y ends, a near-field imaging resolution of similar to 90 mu m is demonstrated in agreement with calculations.

Mots clés: image resolution; optical beam splitters; rods; stainless steel; terahertz wave imaging; terahertz waves

Domaines: Optique / photonique

Jean-Paul Guillet, Laurent Chusseau, R. Adam, T. Laurent, T. Grosjean, et al.. Terahertz near-field imaging using a Y splitter and Sommerfeld wire waves on bare metal rods. 35th International Conference on Infrared, Millimeter and Terahertz Waves, Sep 2010, Rome, Italy. ⟨10.1109/ICIMW.2010.5612583⟩. ⟨hal-00584459⟩