Dreidimensionaler Lichtleitender Wandler für Terahertz-Signale oder Elektrische Pikosekunden-Impulse

Details

Veröffentlichungs-Nr.

EP3836232

Aktenzeichen

EP19306646

Anmeldetag

13. Dezember 2019

Veröffentlichung

12. Januar 2022

Erteilung

12. Januar 2022

Rechtsraum

EP

IPC

H01L31/09H01L31/0352

Abstract

The invention relates to a photoconductive transducer intended to generate or detect waves in the terahertz frequency domain or in the picosecond pulse domain. The transducer comprises a three-dimensional structure that includes, in this order, a first planar electrode (E1), an array of nano-columns (C) embedded in a layer of resist (R) and a second planar electrode (E2) parallel to the first planar electrode. The design of the transducer increases the optical-to-terahertz conversion efficiency by means of photonic and plasmonic resonances and by means of high and homogeneous electric fields. The height of the nano-columns as well as the thickness of the resist range between 100 nanometres and 400 nanometres. The width of the nano-columns is between 100 nanometres and 400 nanometres, the distance between two adjacent nano-columns is between 300 nanometres and 500 nanometres, the nano-columns are made of a III-V semiconductor. The second electrode is transparent, so as to allow the transmission of a laser source towards the photo-absorbing nano-columns.

Anmelder

Firmen

Centre National de la Recherche Scientifique
Institut Polytechnique de Grenoble
Université Savoie Mont Blanc
Université Grenoble Alpes

Land

🇫🇷 Frankreich

Fachgebiete