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Proceedings Paper

Discrete spectrum terahertz imaging using bow-tie diodes: optimized antenna designs and arrays
Author(s): Linas Minkevičius; Karolis Madeikis; Irmantas Kašalynas; Rimvydas Venckevičius; Dalius Seliuta; Vincas Tamošiūnas; Gintaras Valušis
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Paper Abstract

Optimization routes to optimize the operation of InGaAs bow-tie diodes were demonstrated using simulations based on 3D finite-difference time-domain method. Calculations of the electromagnetic field amplitude distribution in a detector plane were performed. Three types of designs – bow-tie diode itself, log-periodic antenna and log-periodic antenna coupled with the bow-tie diode were analyzed; it was determined that frequency properties of such antennacoupled device can be tuned via variation of antenna shape and size. Multi-pixel InGaAs bow-tie diodes arrays of different designs – narrow band and broadband operation – were designed and fabricated. They were demonstrated to be well suited for continuous wave room temperature spectroscopic terahertz imaging at 0.58 THz and at 1.63 THz.

Paper Details

Date Published: 24 September 2013
PDF: 6 pages
Proc. SPIE 8846, Terahertz Emitters, Receivers, and Applications IV, 88460P (24 September 2013); doi: 10.1117/12.2023887
Show Author Affiliations
Linas Minkevičius, Ctr. for Physical Sciences and Technology (Lithuania)
Karolis Madeikis, 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)
Dalius Seliuta, Ctr. for Physical Sciences and Technology (Lithuania)
Vincas Tamošiūnas, Ctr. for Physical Sciences and Technology (Lithuania)
Gintaras Valušis, Ctr. for Physical Sciences and Technology (Lithuania)


Published in SPIE Proceedings Vol. 8846:
Terahertz Emitters, Receivers, and Applications IV
Manijeh Razeghi; Alexei N. Baranov; John M. Zavada, Editor(s)

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