Leaky Lens Photo-Conductive Antennas on LT GaAs membranes

Sberna, Paolo; Fiorellini Bernardis, Arturo Fiorellini; Garufo, Alessandro; Bueno, Juan; Llombart , Nuria Llombart; Neto, Andrea

Leaky Lens Photo-Conductive Antennas on LT GaAs membranes

Conference paper (2021)

Authors

Paolo Sberna EKL Processing

Arturo Fiorellini Fiorellini Bernardis Tera-Hertz Sensing

Alessandro Garufo TNO Defense, Safety and Security

Juan Bueno SRON–Netherlands Institute for Space Research

Nuria Llombart Llombart Tera-Hertz Sensing

Andrea Neto Tera-Hertz Sensing

Research Group

EKL Processing

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Published Date

2021

Language

English

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Research Group

EKL Processing

Abstract

Photo-conductive lens antennas (PCAs) exploit the ultra-short photoconductivity phenomenon of specific semiconductors in order to generate pulsed radiation in the THz regime. State of the art PCAs suffer from high dispersion and low radiation efficiency over the large generated bandwidth due to the poor coupling between the antenna and the dielectric lens. In this work, a leaky lens PCA is proposed to overcome these issues. The presented structure, indeed, aims at a 1:15 bandwidth (0.1 THz – 1.5 THz). The design, assembly and manufacture of a LT-GaAs membrane-based leaky lens PCA are shown and discussed together with the measurement of the radiated power.

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