An ultrabroad terahertz bandpass filter based on multiple-resonance excitation of a composite metamaterial

Yi Ju Chiang; Chan Shan Yang; Yu Hang Yang; Ci Ling Pan; Ta Jen Yen

doi:10.1063/1.3660273

An ultrabroad terahertz bandpass filter based on multiple-resonance excitation of a composite metamaterial

Yi Ju Chiang, Chan Shan Yang, Yu Hang Yang, Ci Ling Pan, Ta Jen Yen^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

91 Citations (Scopus)

Abstract

We experimentally present an ultrabroad terahertz (THz) bandpass filter based on a composite metamaterial (CMM) by exciting its multiple resonances. This metamaterial-based filter, consisting of a metal-dielectric-metal sandwiched structure, possesses a notable spectral-filtering capability with a 0.5-THz-broad bandwidth and excellent band-edge transitions of 140% THz and 182% THz in the THz-gap region. Furthermore, we manifest the mechanism for each of the resonances and the coupling within the composite metamaterial. This realization enables the capacity for engineering the electromagnetic properties to develop other complex optical functionalities. An example of a high-profile dualband THz bandpass filter is also proposed theoretically in this work.

Original language	English
Article number	191909
Journal	Applied Physics Letters
Volume	99
Issue number	19
DOIs	https://doi.org/10.1063/1.3660273
Publication status	Published - 2011 Nov 7
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3660273

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title = "An ultrabroad terahertz bandpass filter based on multiple-resonance excitation of a composite metamaterial",

abstract = "We experimentally present an ultrabroad terahertz (THz) bandpass filter based on a composite metamaterial (CMM) by exciting its multiple resonances. This metamaterial-based filter, consisting of a metal-dielectric-metal sandwiched structure, possesses a notable spectral-filtering capability with a 0.5-THz-broad bandwidth and excellent band-edge transitions of 140% THz and 182% THz in the THz-gap region. Furthermore, we manifest the mechanism for each of the resonances and the coupling within the composite metamaterial. This realization enables the capacity for engineering the electromagnetic properties to develop other complex optical functionalities. An example of a high-profile dualband THz bandpass filter is also proposed theoretically in this work.",

author = "Chiang, {Yi Ju} and Yang, {Chan Shan} and Yang, {Yu Hang} and Pan, {Ci Ling} and Yen, {Ta Jen}",

note = "Funding Information: The authors would like to acknowledge the financial support from the National Science Council (98-2112 -M-007-002-MY3, 99-2923 -M-007-003-MY2, 99-ET-E-007-002-ET, 100-ET-E-007-002-ET, 100-2120 -M-002-008, and 100-2120 -M-010-001).",

year = "2011",

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doi = "10.1063/1.3660273",

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volume = "99",

journal = "Applied Physics Letters",

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AU - Chiang, Yi Ju

AU - Yang, Chan Shan

AU - Yang, Yu Hang

AU - Pan, Ci Ling

AU - Yen, Ta Jen

N1 - Funding Information: The authors would like to acknowledge the financial support from the National Science Council (98-2112 -M-007-002-MY3, 99-2923 -M-007-003-MY2, 99-ET-E-007-002-ET, 100-ET-E-007-002-ET, 100-2120 -M-002-008, and 100-2120 -M-010-001).

PY - 2011/11/7

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N2 - We experimentally present an ultrabroad terahertz (THz) bandpass filter based on a composite metamaterial (CMM) by exciting its multiple resonances. This metamaterial-based filter, consisting of a metal-dielectric-metal sandwiched structure, possesses a notable spectral-filtering capability with a 0.5-THz-broad bandwidth and excellent band-edge transitions of 140% THz and 182% THz in the THz-gap region. Furthermore, we manifest the mechanism for each of the resonances and the coupling within the composite metamaterial. This realization enables the capacity for engineering the electromagnetic properties to develop other complex optical functionalities. An example of a high-profile dualband THz bandpass filter is also proposed theoretically in this work.

AB - We experimentally present an ultrabroad terahertz (THz) bandpass filter based on a composite metamaterial (CMM) by exciting its multiple resonances. This metamaterial-based filter, consisting of a metal-dielectric-metal sandwiched structure, possesses a notable spectral-filtering capability with a 0.5-THz-broad bandwidth and excellent band-edge transitions of 140% THz and 182% THz in the THz-gap region. Furthermore, we manifest the mechanism for each of the resonances and the coupling within the composite metamaterial. This realization enables the capacity for engineering the electromagnetic properties to develop other complex optical functionalities. An example of a high-profile dualband THz bandpass filter is also proposed theoretically in this work.

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An ultrabroad terahertz bandpass filter based on multiple-resonance excitation of a composite metamaterial

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