Laser-Ablated Antireflective Structures for Terahertz Radiation Focusing

被引：0

作者：

Tamosiunas, Vincas ^{[1
,2
]}

Indrisiunas, Simonas ^{[1
]}

Tamosiunaite, Milda ^{[1
]}

Minkevicius, Linas ^{[1
,2
]}

Urbanowicz, Andrzej ^{[1
]}

Raciukaitis, Gediminas ^{[1
]}

Kasalynas, Irmantas ^{[1
]}

Valusis, Gintaras ^{[1
,2
]}

机构：

[1] Ctr Phys Sci & Technol, Sauletekio Av 3, LT-10257 Vilnius, Lithuania

[2] Vilnius Univ, Inst Photon & Nanotechnol, Sauletekio Av 3, LT-10257 Vilnius, Lithuania

来源：

2018 43RD INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) | 2018年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Numerical simulations and experimental characterization of laser-ablated anti-reflective, phase shifting and focusing structures for terahertz frequencies are presented. Nearly 90 % transmittance of silicon wafers with anti-reflective structures on both sides was confirmed experimentally within 0.5-0.6 THz frequency range. Focusing binary zone plate for 0.6 THz was produced employing phase shift differences due to the dual function antireflective layer. Close to diffraction--limited focusing performance was demonstrated thus further confirming sufficient uniformity of the structured layer for reliable phase-shifting application.

引用

页数：2

共 7 条

[1] Materials with on-demand refractive indices in the terahertz range [J].

Kadlec, Christelle ;

Kadlec, Filip ;

Kuzel, Petr ;

Blary, Karine ;

Mounaix, Patrick .

OPTICS LETTERS, 2008, 33 (19) :2275-2277

[2] Spectroscopic Terahertz Imaging at Room Temperature Employing Microbolometer Terahertz Sensors and Its Application to the Study of Carcinoma Tissues [J].

Kasalynas, Irmantas ;

Venckevicius, Rimvydas ;

Minkevicius, Linas ;

Sesek, Aleksander ;

Wahaia, Faustino ;

Tamosiunas, Vincas ;

Voisiat, Bogdan ;

Seliuta, Dalius ;

Valusis, Gintaras ;

Svigelj, Andrej ;

Trontelj, Janez .

SENSORS, 2016, 16 (04) :1-15

[3] Terahertz multilevel phase Fresnel lenses fabricated by laser patterning of silicon [J].

Minkevicius, L. ;

Indrisiunas, S. ;

Sniaukas, R. ;

Voisiat, B. ;

Janonis, V. ;

Tamosiunas, V. ;

Kasalynas, I. ;

Raciukaitis, G. ;

Valusis, G. .

OPTICS LETTERS, 2017, 42 (10) :1875-1878

[4] MEEP: A flexible free-software package for electromagnetic simulations by the FDTD method [J].

Oskooi, Ardavan F. ;

Roundy, David ;

Ibanescu, Mihai ;

Bermel, Peter ;

Joannopoulos, J. D. ;

Johnson, Steven G. .

COMPUTER PHYSICS COMMUNICATIONS, 2010, 181 (03) :687-702

[5] Terahertz spectroscopic identification of explosive and drug simulants concealed by various hiding techniques [J].

Puc, Uros ;

Abina, Andreja ;

Rutar, Melita ;

Zidansek, Aleksander ;

Jeglic, Anton ;

Valusis, Gintaras .

APPLIED OPTICS, 2015, 54 (14) :4495-4502

[6]

Tamosiunaite M., IEEE T TERAHER UNPUB

[7] A High Performance Room Temperature THz Sensor [J].

Trontelj, Janez ;

Valusis, Gintaras ;

Venckevicius, Rimyydas ;

Kasalynas, Irmantas ;

Seseka, Aleksander ;

Svigelj, Andrej .

TERAHERTZ EMITTERS, RECEIVERS, AND APPLICATIONS V, 2014, 9199

← 1 →