Polarization-independent terahertz three-dimensional subwavelength confinement in coupled slot structures

Joong-Wook Lee; Jin-Kyu Yang; Jeong Eun Kim; Ik-Bu Sohn; Hun-Kook Choi; Chul Kang; Chul-Sik Kee

doi:10.1117/12.929325

15 October 2012 Polarization-independent terahertz three-dimensional subwavelength confinement in coupled slot structures

Joong-Wook Lee, Jin-Kyu Yang, Jeong Eun Kim, Ik-Bu Sohn, Hun-Kook Choi, Chul Kang, Chul-Sik Kee

Author Affiliations +

Proceedings Volume 8496, Terahertz Emitters, Receivers, and Applications III; 849610 (2012) https://doi.org/10.1117/12.929325
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

We investigate subwavelength confinement of terahertz electromagnetic surface modes in a three-dimensional region with coupled slot structures. Two-dimensional resonance focusing on a subwavelength slot converts to three-dimensional subwavelength confinement, due to sharp edge confinement effect on asymmetric plasmonic structure, at the center position of the slot structures which consists of two or more slots. We also report on the polarization independent confinement of terahertz electromagnetic surface modes beyond diffraction limit. The structure which consists of radially arranged subwavelength slots located at a same center position shows the polarization-independent terahertz three-dimensional subwavelength confinement.

Citation Download Citation

Joong-Wook Lee, Jin-Kyu Yang, Jeong Eun Kim, Ik-Bu Sohn, Hun-Kook Choi, Chul Kang, and Chul-Sik Kee "Polarization-independent terahertz three-dimensional subwavelength confinement in coupled slot structures", Proc. SPIE 8496, Terahertz Emitters, Receivers, and Applications III, 849610 (15 October 2012); https://doi.org/10.1117/12.929325

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