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Proceedings Paper

On-chip integration solutions of compact optics and detectors in room-temperature terahertz imaging systems
Author(s): Linas Minkevičius; Vincas Tamošiūnas; Irmantas Kašalynas; Rimvydas Venckevičius; Karolis Madeikis; Bogdan Voisiat; Dalius Seliuta; Gediminas Račiukaitis; Gintaras Valušis
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Paper Abstract

On-chip integrated solutions employing properties of Fresnel zone plates with integrated band-pass filters for the room temperature terahertz imaging systems are discussed. Finite-difference time-domain simulations were used to predict properties of conventional zone plates and ones with resonant filter areas as flat optics components. They are produced employing the laser direct writing and characterized by electronic THz sources and an optically pumped terahertz laser. It was shown that more than one order of magnitude detection enhancement can be observed of bow-tie-shaped InGaAs-based terahertz detectors by on-chip incorporation of the secondary diffractive optics.

Paper Details

Date Published: 31 August 2015
PDF: 6 pages
Proc. SPIE 9585, Terahertz Emitters, Receivers, and Applications VI, 95850M (31 August 2015); doi: 10.1117/12.2187921
Show Author Affiliations
Linas Minkevičius, Ctr. for Physical Sciences and Technology (Lithuania)
Vincas Tamošiūnas, Ctr. for Physical Sciences and Technology (Lithuania)
Irmantas Kašalynas, Ctr. for Physical Sciences and Technology (Lithuania)
Rimvydas Venckevičius, Ctr. for Physical Sciences and Technology (Lithuania)
Karolis Madeikis, Ctr. for Physical Sciences and Technology (Lithuania)
Bogdan Voisiat, Ctr. for Physical Sciences and Technology (Lithuania)
Dalius Seliuta, Ctr. for Physical Sciences and Technology (Lithuania)
Gediminas Račiukaitis, Ctr. for Physical Sciences and Technology (Lithuania)
Gintaras Valušis, Ctr. for Physical Sciences and Technology (Lithuania)


Published in SPIE Proceedings Vol. 9585:
Terahertz Emitters, Receivers, and Applications VI
Manijeh Razeghi; Alexei N. Baranov; John M. Zavada; Dimitris Pavlidis, Editor(s)

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