Liquid crystal based electrically switchable Bragg structure for THz waves

Optics Express

Volumn 17, Issue 9, 2009, Pages 7377-7382

  Wilk, Rafal ^a,b   Vieweg, Nico ^a   Kopschinski, Olaf ^a   Koch, Martin ^a,c  

^a TECHNICAL UNIVERSITY OF BRAUNSCHWEIG   (Germany)

^b MENLO SYSTEMS GMBH   (Germany)

^c PHILIPPS UNIVERSITY MARBURG   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

BRAGG CELLS; ELECTRIC FIELDS; EXCITONS; LIQUID CRYSTALS; TERAHERTZ WAVES; TRANSFER MATRIX METHOD;

BRAGG STRUCTURE; EXTERNAL ELECTRIC FIELD; LIQUID CRYSTAL MOLECULES; PROOF-OF-PRINCIPLE EXPERIMENTS; STOP-BAND FILTERS; STOP-BANDS; THZ FREQUENCIES; TRANSFER-MATRIX CALCULATIONS;

CRYSTAL STRUCTURE;

ARTICLE; CHEMISTRY; COMPUTER AIDED DESIGN; ELECTRONICS; EQUIPMENT; EQUIPMENT DESIGN; ILLUMINATION; INSTRUMENTATION; LIQUID CRYSTAL; REFRACTOMETRY; REPRODUCIBILITY; SENSITIVITY AND SPECIFICITY; SIGNAL PROCESSING; TERAHERTZ RADIATION;

COMPUTER-AIDED DESIGN; ELECTRONICS; EQUIPMENT DESIGN; EQUIPMENT FAILURE ANALYSIS; LIGHTING; LIQUID CRYSTALS; REFRACTOMETRY; REPRODUCIBILITY OF RESULTS; SENSITIVITY AND SPECIFICITY; SIGNAL PROCESSING, COMPUTER-ASSISTED; TERAHERTZ RADIATION;

EID: 66549123303     PISSN: None     EISSN: 10944087     Source Type: Journal    
DOI: 10.1364/OE.17.007377     Document Type: Article

References (25)

1. M. Walther, B.M. Fischer, and P. U. Jepsen, "Noncovalent intermolecular forces in polycrystalline and amorphous saccharides in the far infrared," Chem. Phys. 288, 261-268 (2003).
2. M. Hangyo, M. Tani, and T. Nagashima, "Terahertz Time-Domain Spectroscopy of Solids: A Review," Int. J. Infrared Millim. Waves 26, 1661-1690 (2006).
3. S. Chatterjee, T. Grunwald, D. Kohler, K. Pierz, D. Golde, M. Kira, and S.W. Koch, "THz measurements of the optical response in a two-dimensional electron gas," Phys. Status Solidi 6, 453-456 (2009).
4. 2O," Phys. Rev. Lett. 110,246401 (2008).
5. N. Krumbholz, T. Hochrein, N. Vieweg, T. Hasek, K. Kretschmer, M. Bastian, M. Mikulics, and M. Koch, "Monitoring Polymeric Compounding Processes Inline with THz Time-Domain Spectroscopy," Polymer Test. 28, 30-35 (2009).
6. J. F Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, "THz imaging and sensing for security applications-explosives, weapons and drugs," Semicond. Sci. Technol. 20, 266-280 (2005).
7. R. Piesiewicz, T. Kleine-Ostmann, N. Krumbholz, D. Mittleman, M. Koch, J. Schoebel, and T. Kurner, "Short-Range Ultra-Broadband Terahertz Communications: Concepts and Perspectives," IEEE Antennas Propag. Mag. 49, 24-39 (2007).
8. D. Turchinovich, A. Kammoun, P. Knobloch, T Dobbertin, and M. Koch, "Flexible All-Plastic Mirrors for the THz Range," Appl. Phys. A 74, 291-293 (2002).
9. N. Krumbholz, K. Gerlach, F. Rutz, M. Koch, R. Piesiewicz, T. Kurner, and D. Mittleman, "Omnidirectional terahertz mirrors: A key element for future terahertz communication systems," Appl. Phys. Lett. 88, 202905 (2006).
10. T. Bauer, J. S. Kolb, T. Löffler, E. Mohler, H. G. Roskos, and U. C. Pernisz, "Indium-tin-oxide-coated glass as dichroic mirror for far-infrared electromagnetic radiation," J. Appl. Phys. 92, 2210-2212 (2002).
11. H. Nemec, L. Duvillaret, F. Garet, P. Kuzel, P. Xavier, J. Richard, and D. Rauly, "Thermally tunable filter for terahertz range based on a one-dimensional photonic crystal with a defect," J. Appl. Phys. 96, 4072-4075 (2004).
12. C. Winnewisser, F. Lewen, and H. Helm, "Transmission characteristics of dichroic filters measured by THz time-domain spectroscopy," Appl. Phys. A 66, 593-598 (1998).
13. T. Kleine-Ostmann, P. Dawson, K. Pierz, G. Hein, and M. Koch, "Room-temperature operation of an electrically driven terahertz modulator," Appl. Phys. Lett. 84, 3555 (2004).
14. H.-T. Chen, S. Palit, T. Tyler, C. M. Bingham, J. M. O. Zide, J. F. O'Hara, D. R. Smith, A. C. Gossard, R. D. Averitt, W. J. Padilla, N. M. Jokerst, and A. J. Taylor, "Hybrid metamaterials enable fast electrical modulation of freely propagating terahertz waves," Appl. Phys. Lett. 93, 091117 (2008).
15. C.-Y. Chen, C.-F. Hsieh, Y.-F. Lin, R.-P. Pan, and C.-L. Pan, "Magnetically tunable room-temperature 2π liquid crystal terahertz phase shifter," Opt. Express 12, 2625-2630 (2004).
16. H. Zhang, P. Guo, P. Chen, S. Chang, and J. Yuan, "Liquid-crystal- filled photonic crystal for terahertz switch and filter," J. Opt. Soc. Am. B 26, 101-106 (2009).
17. C.-Y. Chen, C.-L. Pan, C.-F. Hsieh, Y.-F. Lin, and R.-P. Pan, "Liquid-crystal-based terahertz tunable Lyot filter," Appl. Phys. Lett. 88, 101107 (2006).
18. T.-R. Tsai C.-Y. Chen R.-P. Pan C.-L. Pan, and X.-C. Zhang, "Electrically controlled room temperature terahertz phase shifter with liquid crystal," IEEE Microwave Wirel. Compon. Lett. 14, 77-79 (2004).
19. R. Wilk, N. Vieweg, T. Hasek, O. Kopschinski, and M. Koch, "THz spectroscopy of liquid crystals from the CB family," J. Infrared Millim. Terahertz Waves (submitted) (2009).
20. Z. Ghattan, T. Hasek, R. Wilk, M. Shahabadi, and M. Koch, "Sub-terahertz on-off switch based on a two-dimensional photonic crystal infiltrated by liquid crystals," Opt. Commun. 281, 4623-4625 (2008).
21. M. Born and E. Wolf, Principles of Optics, 6th Edition (Pergamon, 1994).
22. F. Rutz, M. Koch, L. Micele, and G. de Portu, "Ceramic dielectric mirrors for the terahertz range," Appl. Opt. 45, 8070-8073 (2006).
23. R. Wilk, N. Krumbholz, F. Rutz, D. Mittleman, and M.Koch, "Dielectric reflectors for terahertz frequencies," J.Nanoelectron. Optoelectron. 2, 77-82 (2007).
24. P. J. Collings, and M. Hird, "Introduction to Liquid Crystals Chemistry and Physics," (Taylor & Francis, London, 2004).
25. C.-Y. Chen, T.-R Tsai, C.-L. Pan, and R.-P. Pan, "Room temperature terahertz phase shifter based on magnetically controlled birefringence in liquid crystals," Appl. Phys. Lett. 83, 4497-4499 (2003).