DataVXACS NanoPaper
journal article·2023-10-10

Terahertz Twistoptics–Engineering Canalized Phonon Polaritons

Maximilian Obst, Tobias Nörenberg, Gonzalo Álvarez-Pérez, Thales V. A. G. de Oliveira, Javier Taboada-Gutiérrez, Flávio H. Feres, Felix G. Kaps, Osama Hatem, Andrei Luferau, Alexey Y. Nikitin, J. Michael Klopf, Pablo Alonso-González, Susanne C. Kehr, Lukas M. Eng

ACS Nano· Volume 17· Issue 19
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Source abstract

Abstract

The terahertz (THz) frequency range is key to studying collective excitations in many crystals and organic molecules. However, due to the large wavelength of THz radiation, the local probing of these excitations in smaller crystalline structures or few-molecule arrangements requires sophisticated methods to confine THz light down to the nanometer length scale, as well as to manipulate such a confined radiation. For this purpose, in recent years, taking advantage of hyperbolic phonon polaritons (HPhPs) in highly anisotropic van der Waals (vdW) materials has emerged as a promising approach, offering a multitude of manipulation options, such as control over the wavefront shape and propagation direction. Here, we demonstrate the THz application of twist-angle-induced HPhP manipulation, designing the propagation of confined THz radiation between 8.39 and 8.98 THz in the vdW material α-molybdenum trioxide (α-MoO 3 ), hence extending twistoptics to this intriguing frequency range. Our images, recorded by near-field optical microscopy, show the frequency- and twist-angle-dependent changes between hyperbolic and elliptic polariton propagation, revealing a polaritonic transition at THz frequencies. As a result, we are able to allocate canalization (highly collimated propagation) of confined THz radiation by carefully adjusting these two parameters, i.e. frequency and twist angle. Specifically, we report polariton canalization in α-MoO 3 at 8.67 THz for a twist angle of 50°. Our results demonstrate the precise control and manipulation of confined collective excitations at THz frequencies, particularly offering possibilities for nanophotonic applications.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Terahertz technology and applications · Thermal Radiation and Cooling Technologies · Photonic and Optical Devices

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institut für Angewandte Physik, Technische Universität Dresden, Dresden 01187, Germany

Würzburg-Dresden Cluster of Excellence - EXC 2147 (ct.qmat), Dresden 01062, Germany

Department of Physics, University of Oviedo, Oviedo 33006, Spain

Center of Research on Nanomaterials and Nanotechnology CINN (CSIC−Universidad de Oviedo), El Entrego 33940, Spain

Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany

Department of Quantum Matter Physics, Université de Genève, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland

Gleb Wataghin Physics Institute, University of Campinas (Unicamp), Campinas, Sao Paulo 13083-859, Brazil

Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Sao Paulo 13083-100, Brazil

Department of Engineering Physics and Mathematics, Faculty of Engineering, Tanta University, Tanta 31511, Egypt

Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany

Donostia International Physics Center (DIPC), Donostia/San Sebastián 20018, Spain

IKERBASQUE, Basque Foundation for Science, Bilbao 48013, Spain

Collaborative Research Center 1415, Technische Universität Dresden, Dresden 01069, Germany

Funding

Bundesministerium f?r Bildung und Forschung · Ministerio de Ciencia, Innovaci?n y Universidades · Deutsche Forschungsgemeinschaft · Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico · Gobierno del Principado de Asturias · Funda??o de Amparo ? Pesquisa do Estado de S?o Paulo · H2020 European Research Council

References (53)

Show source-provided references
1. 10.1038/s41928-019-0355-610.1038/s41928-019-0355-6 ↗
2. 10.1038/s41928-018-0173-210.1038/s41928-018-0173-2 ↗
3. 10.1016/j.infrared.2012.03.00710.1016/j.infrared.2012.03.007 ↗
4. 10.1088/1361-6463/50/4/04300110.1088/1361-6463/50/4/043001 ↗
5. 10.3847/2041-8213/ab0ec710.3847/2041-8213/ab0ec7 ↗
6. 10.1142/9789812796820_000110.1142/9789812796820_0001 ↗
7. Gallerano G. P. · Proc. 2004 FEL Conf. · 2004 · 216
8. 10.1039/D0TC01716G10.1039/D0TC01716G ↗
9. 10.1088/0957-4484/24/21/21020110.1088/0957-4484/24/21/210201 ↗
10. 10.21037/qims.2017.06.0210.21037/qims.2017.06.02 ↗
11. 10.1049/el.2012.084910.1049/el.2012.0849 ↗
12. 10.1002/lpor.20100001110.1002/lpor.201000011 ↗
13. 10.1002/adom.20207000910.1002/adom.202070009 ↗
14. 10.1021/acs.jpcc.0c0634410.1021/acs.jpcc.0c06344 ↗
15. Wahyudi, T.; Apriono, C.; Zulkifli, F. Y.; Rahardjo, E. T. Broadband Planar Bow-Tie Antenna on High Resistivity Silicon Substrate for Terahertz Application. Proceedings of the 15th International Conference on Quality in Research (QiR): International Symposium on Electrical and Computer Engineering, 2017; pp 372–376.10.1109/QIR.2017.8168514 ↗
16. 10.1007/978-90-481-9751-4_2110.1007/978-90-481-9751-4_21 ↗
17. 10.1088/2515-7639/ab584310.1088/2515-7639/ab5843 ↗
18. 10.1126/science.124683310.1126/science.1246833 ↗
19. 10.1038/s41586-018-0618-910.1038/s41586-018-0618-9 ↗
20. 10.1002/adma.20200577710.1002/adma.202005777 ↗
21. 10.1038/s41586-021-03755-110.1038/s41586-021-03755-1 ↗
22. 10.1038/s41586-021-04328-y10.1038/s41586-021-04328-y ↗
23. 10.1038/s41467-023-40789-710.1038/s41467-023-40789-7 ↗
24. 10.1021/acsnano.2c0537610.1021/acsnano.2c05376 ↗
25. 10.1038/s41467-020-17425-910.1038/s41467-020-17425-9 ↗
26. 10.1126/science.aaq170410.1126/science.aaq1704 ↗
27. 10.1038/s41565-022-01185-210.1038/s41565-022-01185-2 ↗
28. 10.1038/s41467-022-31477-z10.1038/s41467-022-31477-z ↗
29. 10.1021/acsphotonics.1c0154910.1021/acsphotonics.1c01549 ↗
30. 10.1038/s42254-022-00472-010.1038/s42254-022-00472-0 ↗
31. 10.1038/s41586-020-2359-910.1038/s41586-020-2359-9 ↗
32. 10.1021/acs.nanolett.0c0162710.1021/acs.nanolett.0c01627 ↗
33. 10.1038/s41563-020-0732-610.1038/s41563-020-0732-6 ↗
34. 10.1021/acs.nanolett.0c0167310.1021/acs.nanolett.0c01673 ↗
35. 10.1038/s41563-023-01582-510.1038/s41563-023-01582-5 ↗
36. 10.1103/PhysRevB.100.16542410.1103/PhysRevB.100.165424 ↗
37. 10.1021/acs.nanolett.9b0531910.1021/acs.nanolett.9b05319 ↗
38. 10.1063/1.482144410.1063/1.4821444 ↗
39. 10.1063/1.494379310.1063/1.4943793 ↗
40. 10.1364/JOSAB.34.00212810.1364/JOSAB.34.002128 ↗
41. 10.1063/1.494134310.1063/1.4941343 ↗
42. 10.1016/S0304-3991(97)00030-210.1016/S0304-3991(97)00030-2 ↗
43. 10.1039/D0NR07372E10.1039/D0NR07372E ↗
44. 10.1103/PhysRevB.100.23540810.1103/PhysRevB.100.235408 ↗
45. 10.1038/s41467-020-17335-w10.1038/s41467-020-17335-w ↗
46. 10.1038/nmat416910.1038/nmat4169 ↗
47. 10.1021/acsphotonics.8b0056510.1021/acsphotonics.8b00565 ↗
48. 10.1002/adom.20190109110.1002/adom.201901091 ↗
49. 10.1080/08940886.2017.133842110.1080/08940886.2017.1338421 ↗
50. 10.1038/s41467-019-11143-710.1038/s41467-019-11143-7 ↗
51. 10.1098/rsta.2003.134710.1098/rsta.2003.1347 ↗
52. 10.1038/nature1125410.1038/nature11254 ↗
53. 10.1038/nature1125310.1038/nature11253 ↗