Polarization-dependent thin-film wire-grid reflectarray for terahertz waves

2015 ◽  
Vol 107 (3) ◽  
pp. 031111 ◽  
Author(s):  
Tiaoming Niu ◽  
Aditi Upadhyay ◽  
Withawat Withayachumnankul ◽  
Daniel Headland ◽  
Derek Abbott ◽  
...  
Keyword(s):  
Thin Film ◽  
Terahertz Waves ◽  
Wire Grid

High extinction ratio and low transmission loss thin-film terahertz polarizer with a tunable bilayer metal wire-grid structure

2014 ◽  
Vol 39 (4) ◽  
pp. 793 ◽  
Author(s):  
Zhe Huang ◽  
Edward P. J. Parrott ◽  
Hongkyu Park ◽  
Hau Ping Chan ◽  
Emma Pickwell-MacPherson
Keyword(s):  
Thin Film ◽  
Transmission Loss ◽  
Extinction Ratio ◽  
Metal Wire ◽  
Grid Structure ◽  
Wire Grid ◽  
Low Transmission ◽  
High Extinction Ratio

Refractive Index Variation of Fe3O4 Thin Film According to Deposition Rate

2015 ◽  
Vol 749 ◽  
pp. 106-110
Author(s):  
Ji Yun Jeong ◽  
Young Tae Cho ◽  
Yoon Gyo Jung
Keyword(s):  
Thin Film ◽  
Refractive Index ◽  
Research Result ◽  
Deposition Process ◽  
Flexible Displays ◽  
Wire Grid ◽  
A Value ◽  
Index Variation ◽  
High Possibility ◽  
Very High

Recently, the display industry is focusing on making bendable or flexible displays with higher quality and larger area. Ultimately, there is a very high possibility that future displays will be rollable. The biggest problem with rollable displays is the fabrication of a polarizer film to prevent reflection of the OLED. To develop a rollable display, the display should be made of material with a very thin thickness, like that of paper. However, the thickness of the polarizer film used for displays is only approximately 180 μm. This means that the film is too thick to be applied to rollable displays. If a polarizer of wire grid type, which we investigate in this study, is used, it can reduce the thickness of this film to a value under approximately 1 μm. One research result has been to discover that Fe3O4is a very slightly absorptive material. Especially, most research into Fe3O4thin films has concentrated on its characteristics in nanotubes. So, our purpose in this research is to investigate the deposition process of Fe3O4thin-film under various conditions using an E-beam evaporator; we intend to compare these various processes with each other after measuring the refractive index.

scholarly journals Chromium plasmonic polarizer for high intensity light

2017 ◽  
Vol 9 (3) ◽  
pp. 76 ◽  
Author(s):  
Damian Arkadiusz Michalik ◽  
Paweł S. Jung ◽  
Bartłomiej W. Klus ◽  
Andrzej Kowalik ◽  
Anna Rojek ◽  
...  
Keyword(s):  
Thin Film ◽  
High Intensity ◽  
Fdtd Method ◽  
Visible Region ◽  
Visible Spectrum ◽  
Optical Element ◽  
Perfect Absorber ◽  
Wire Grid ◽  
Circuit Components ◽  
Wire Grid Polarizer

In this work, we investigate a thin-film polarizer for a high intensity of the electromagnetic (EM) beam based on Cr nano wire arrays. Commonly used thin-film polarizing components are very sensitive for high power of EM waves and can be easily damaged by focused beams. The solution to this problem could be the thin-film polarizer based on metallic subwavelengths structures. This type of optical element has huge resistance comparing to typical thin-film polarizers. However, designing such an optical element for proper wavelength of EM wave and transmissions is not easy task. In this paper we present numerical as well as experimental results for specially designed chromium thin-film polarizer for wavelength 532nm Full Text: PDF ReferencesW. Zhou, K. Li, C. Song, P. Hao, M. Chi, M. Yu and Y. Wu, "Polarization-independent and omnidirectional nearly perfect absorber with ultra-thin 2D subwavelength metal grating in the visible region", Opt. Express 23, 11 (2015). CrossRef W. L. Barnes, A . Dereux, and T. W. Ebbesen, "Surface plasmon subwavelength optics", Nature 424, 824-830 (2003). CrossRef C. Lee, E. Sim, D. Kim, "Blazed wire-grid polarizer for plasmon-enhanced polarization extinction: design and analysis", Opt. Express 25, 7 (2017). CrossRef A. Lehmuskero, Metallic thin film structures and polarization shaping gratings (University of Eastern Finland 2010).Y. Leroux, J. C. Lacroix, C. Fave, V. Stockhausen, N. Felidj, J. Grandm, A. Hohenau, J. R. Krenn, "Active plasmonic devices with anisotropic optical response: a step toward active polarizer", Nano Lett. 5, 9 (2009). CrossRef R. T. Perkins, D. P. Hansen, E. W. Gardner, J. M. Thorne, A. A. Robbins, Broadband wire grid polarizer for the visible spectrum, US 6122103 (2000). DirectLink D. M. Sullivan, Electromagnetic simulation using the FDTD method, New York: IEEE Press Series (2000). CrossRef J. P. Berenger, Perfectly Matched Layer (PML) for Computational Electromagnetics, Morgan & Claypool Publishers (2007). CrossRef Yu, W., and R. Mittra, "A conformal FDTD software package modeling antennas and microstrip circuit components", IEEE Antennas Propagat. Magazine 42, 28 (2000) . CrossRef L. W. Bos, D. W. Lynch, "Optical Properties of Antiferromagnetic Chromium and Dilute Cr-Mn and Cr-Re Alloys", Phys. Rev. Sect. B, 2, 4267 (1970). CrossRef

A Review on Thin-film Sensing with Terahertz Waves

2012 ◽  
Vol 33 (3) ◽  
pp. 245-291 ◽  
Author(s):  
John F. O’Hara ◽  
Withawat Withayachumnankul ◽  
Ibraheem Al-Naib
Keyword(s):  
Thin Film ◽  
Terahertz Waves

scholarly journals Terahertz polarizing component on cyclo-olefin polymer

2017 ◽  
Vol 9 (1) ◽  
pp. 2 ◽  
Author(s):  
Antonio Ferraro ◽  
Dimitrios C. Zografopoulos ◽  
Roberto Caputo ◽  
Romeo Beccherelli
Keyword(s):  
Quantum Cascade Lasers ◽  
Extinction Ratio ◽  
Terahertz Waves ◽  
Low Loss ◽  
Wire Grid ◽  
Quantum Cascade ◽  
Security Applications ◽  
Terahertz Technology ◽  
Cascade Lasers ◽  
Wire Grid Polarizer

Wire-grid polarizers constitute a traditional component for the control of polarization in free-space devices that operate in a broad part of the electromagnetic spectrum. Here, we present an aluminium-based THz wire grid polarizer, fabricated on a sub-wavelength thin flexible and conformal foil of Zeonor polymer having a thickness of 40um. The fabricated device,characterized by means of THz time-domain spectroscopy, exhibitsa high extinction ratio between 30 and 45dB in the 0.3-2.1THz range. The insertion losses oscillate between 0 and 1.1dB andthey stemalmost exclusively from moderate Fabry-Perót reflections and it is engineered forvanishing at 2THz for operation with quantum cascade lasers. Full Text: PDF ReferencesI. F. Akyildiz, J. M. Jornet, C. Han, "Terahertz band: Next frontier for wireless communications", Phys. Commun. 12, 16 (2014). CrossRef M.C. Kemp, P.F. Taday, B.E. Cole, J.A. Cluff, A.J. Fitzgerald, W.R. Tribe, "Security applications of terahertz technology", Proc. SPIE 5070, 44 (2003). CrossRef M. Schirmer, M. Fujio, M. Minami, J. Miura, T. Araki, T. Yasui, "Biomedical applications of a real-time terahertz color scanner", Biomed. Opt. Express 1, 354 (2010). CrossRef R.P. Cogdill, R.N. Forcht, Y. Shen, P.F. Taday, J.R. Creekmore, C.A. Anderson, J.K. Drennen, "Comparison of Terahertz Pulse Imaging and Near-Infrared Spectroscopy for Rapid, Non-Destructive Analysis of Tablet Coating Thickness and Uniformity", J. Pharm. Innov. 2, 29 (2007). CrossRef Y.-C. Shen, "Terahertz pulsed spectroscopy and imaging for pharmaceutical applications: A review", Int. J. Pharm. 417, 48(2011). CrossRef A.G. Davies, A.D. Burnett, W. Fan, E.H. Linfield, J.E. Cunningham, "Terahertz spectroscopy of explosives and drugs", Mater. Today 11, 18 (2008). CrossRef J.F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, D. Zimdars, "THz imaging and sensing for security applications?explosives, weapons and drugs", Semicond. Sci. Technol. 20, S266 (2005). CrossRef D. Saeedkia, Handbook of Terahertz Technology for Imaging, Sensing and Communications (Elsevier, 2013).N. Born, M. Reuter, M. Koch, M. Scheller, "High-Q terahertz bandpass filters based on coherently interfering metasurface reflections", Opt. Lett. 38, 908 (2013). CrossRef A. Ferraro, D.C. Zografopoulos, R. Caputo, R. Beccherelli, "Periodical Elements as Low-Cost Building Blocks for Tunable Terahertz Filters", IEEE Photonics Technol. Lett. 28, 2459 (2016). CrossRef A. Ferraro, D.C. Zografopoulos, R. Caputo, R. Beccherelli, "Broad- and Narrow-Line Terahertz Filtering in Frequency-Selective Surfaces Patterned on Thin Low-Loss Polymer Substrates", IEEE J. Sel. Top. Quantum Electron. 23 (2017). CrossRef B. S.-Y. Ung, B. Weng, R. Shepherd, D. Abbott, C. Fumeaux, "Inkjet printed conductive polymer-based beam-splitters for terahertz applications", Opt. Mater. Express 3, 1242 (2013). CrossRef J.-S. Li, D. Xu, J. Yao, "Compact terahertz wave polarizing beam splitter", Appl. Opt. 49, 4494 (2010). CrossRef K. Altmann, M. Reuter, K. Garbat, M. Koch, R. Dabrowski, I. Dierking, "Polymer stabilized liquid crystal phase shifter for terahertz waves", Opt. Express 21, 12395 (2013). CrossRef D.C. Zografopoulos, R. Beccherelli, "Tunable terahertz fishnet metamaterials based on thin nematic liquid crystal layers for fast switching", Sci. Rep. 5, 13137 (2015). CrossRef G. Isić, B. Vasić, D. C. Zografopoulos, R. Beccherelli, R. Gajić, "Electrically Tunable Critically Coupled Terahertz Metamaterial Absorber Based on Nematic Liquid Crystals", Phys. Rev. Appl. 3, 064007 (2015). CrossRef K. Iwaszczuk, A.C. Strikwerda, K. Fan, X. Zhang, R.D. Averitt, P.U. Jepsen, "Flexible metamaterial absorbers for stealth applications at terahertz frequencies", Opt. Express 20, 635 (2012). CrossRef F. Yan, C. Yu, H. Park, E.P.J. Parrott, E. Pickwell-MacPherson, "Advances in Polarizer Technology for Terahertz Frequency Applications", J. Infrared Millim. Terahertz Waves 34, 489 (2013). CrossRef http://www.tydexoptics.com DirectLink K. Imakita, T. Kamada, M. Fujii, K. Aoki, M. Mizuhata, S. Hayashi, "Terahertz wire grid polarizer fabricated by imprinting porous silicon", Opt. Lett. 38, 5067 (2013). CrossRef A. Isozaki, et al., "Double-layer wire grid polarizer for improving extinction ratio", Solid-State Sens. Actuators Microsyst. Transducers Eurosensors XXVII 2013 Transducers Eurosensors XXVII 17th Int. Conf. On, IEEE, pp. 530?533 (2013). DirectLink A. Ferraro, D. C. Zografopoulos, M. Missori, M. Peccianti, R. Caputo, R. Beccherelli, "Flexible terahertz wire grid polarizer with high extinction ratio and low loss", Opt. Lett. 41, 2009(2016). CrossRef M.S. Vitiello, G. Scalari, B. Williams, P.D. Natale, "Quantum cascade lasers: 20 years of challenges", Opt. Express 23, 5167(2015). CrossRef A. Podzorov, G. Gallot, "Low-loss polymers for terahertz applications", Appl. Opt. 47, 3254(2008). CrossRef

Robust Thin-Film Wire-Grid THz Polarizer Fabricated Via a Low-Cost Approach

2013 ◽  
Vol 25 (1) ◽  
pp. 81-84 ◽  
Author(s):  
Zhe Huang ◽  
Hongkyu Park ◽  
Edward P. J. Parrott ◽  
Hau Ping Chan ◽  
Emma Pickwell-MacPherson
Keyword(s):  
Thin Film ◽  
Low Cost ◽  
Wire Grid ◽  
Cost Approach

Terahertz waves polarization tunability in unaligned single-wall carbon nanotube thin film

2021 ◽  
Author(s):  
Anatoly Kvitsinskiy ◽  
Petr S. Demchenko ◽  
Mikhail G. Novoselov ◽  
Ilya Anoshkin ◽  
Kirill Bogdanov ◽  
...  
Keyword(s):  
Thin Film ◽  
Carbon Nanotube ◽  
Terahertz Waves ◽  
Single Wall Carbon Nanotube ◽  
Single Wall Carbon
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