K. Madeikis
Vilnius University
10 Papers
4 Citations
K. Madeikis is an academic researcher from Vilnius University. The author has contributed to research in topics: Laser & Terahertz radiation. The author has an hindex of 2, co-authored 6 publications.
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Papers
On-chip integration of laser-ablated zone plates for detection enhancement of inGaAs bow-tie terahertz detectors
Linas Minkevičius,Vincas Tamošiūnas,K. Madeikis,Bogdan Voisiat,Irmantas Kašalynas,Gintaras Valušis +5 more
TL;DR: In this article, an order of magnitude detection enhancement of bow-tie-shaped InGaAs-based terahertz detectors by on-chip incorporation of the secondary diffractive optics is reported.
16
Compact diffractive optical components for terahertz beam manipulation
L. Mmkevicius,K. Madeikis,Bogdan Voisiat,V. Tamosnmas,Gintaras Valušis,Gediminas Račiukaitis,Irmantas Kašalynas +6 more
- 01 Aug 2015
TL;DR: In this paper, the focusing performance of the diffractive components was studied measuring the 0.6 THz frequency beam profiles along the optical axis, with the preference for the silicon components due to less pronounced standing waves effect between the detector and the zone plate.
2
On-chip integration solutions of compact optics and detectors in room-temperature terahertz imaging systems
Linas Minkevičius,Vincas Tamošiūnas,Irmantas Kašalynas,R. Venckevicius,K. Madeikis,Bogdan Voisiat,Dalius Seliuta,Gediminas Račiukaitis,Gintaras Valušis +8 more
TL;DR: On-chip integrated solutions employing properties of Fresnel zone plates with integrated band-pass filters for the room temperature terahertz imaging systems are discussed in this paper, where finite-difference time-domain simulations are used to predict properties of conventional zone plates and ones with resonant filter areas as flat optics components.
2
Versatile ultrashort pulse laser tunable up to nanosecond range
Tadas Bartulevicius,Mykolas Lipnickas,K. Madeikis,Raimundas Burokas,Andrejus Michailovas +4 more
- 08 Mar 2023
TL;DR: In this paper , a new versatile patent-pending technology enabling new operation regimes and a unique set of features in the industrial grade 30 W-level average power femtosecond hybrid laser is introduced.
1
Discrete spectrum terahertz imaging using bow-tie diodes: optimized antenna designs and arrays
Linas Minkevičius,K. Madeikis,Irmantas Kašalynas,R. Venckevicius,Dalius Seliuta,Vincas Tamošiūnas,Gintaras Valušis +6 more
TL;DR: In this paper, a multi-pixel InGaAs bow-tie diodes arrays of different designs were designed and fabricated for continuous wave room temperature spectroscopic terahertz imaging at 0.58 and 1.63 THz.
1