Free-Space Plasmonic Filter with Dual-Resonance Wavelength Using Asymmetric T-Shaped Metallic Array

Chih Ming Wang; Chih Jui Yu

doi:10.1007/s11468-012-9402-0

Free-Space Plasmonic Filter with Dual-Resonance Wavelength Using Asymmetric T-Shaped Metallic Array

Chih Ming Wang, Chih Jui Yu

Department of Optics and Photonics

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

10 Scopus citations

Abstract

In this study, we propose a plasmonic free-space filter with dual resonance wavelength by using an asymmetric T-shaped array. The structure under the T-shaped structure forms two metal/insulator/metal cavities with different cavity length. Each cavity supports a specific resonance wavelength. A notch filter for second harmonic generation Nd:YAG laser is also proposed. The filter offers two resonance dips and low sideband. In addition, the filter properties are based on the localized surface plasmon. Therefore, the angle tolerance is extremely high. This makes the proposed structure easy to align. The proposed structure can be used in dual wavelength biosensing detection and dual wavelength thermal emission applications.

Original language	English
Pages (from-to)	385-390
Number of pages	6
Journal	Plasmonics
Volume	8
Issue number	2
DOIs	https://doi.org/10.1007/s11468-012-9402-0
State	Published - Jun 2013

Keywords

Optical filter
Subwavelength structures
Surface plasmons

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10.1007/s11468-012-9402-0

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title = "Free-Space Plasmonic Filter with Dual-Resonance Wavelength Using Asymmetric T-Shaped Metallic Array",

abstract = "In this study, we propose a plasmonic free-space filter with dual resonance wavelength by using an asymmetric T-shaped array. The structure under the T-shaped structure forms two metal/insulator/metal cavities with different cavity length. Each cavity supports a specific resonance wavelength. A notch filter for second harmonic generation Nd:YAG laser is also proposed. The filter offers two resonance dips and low sideband. In addition, the filter properties are based on the localized surface plasmon. Therefore, the angle tolerance is extremely high. This makes the proposed structure easy to align. The proposed structure can be used in dual wavelength biosensing detection and dual wavelength thermal emission applications.",

keywords = "Optical filter, Subwavelength structures, Surface plasmons",

author = "Wang, {Chih Ming} and Yu, {Chih Jui}",

note = "Funding Information: Acknowledgments The authors are grateful for the financial support of this research received from the National Science Council of Taiwan, China under grant number NSC 99-2221-E-259-011 and NSC 100-2120-M-002-008.",

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AU - Wang, Chih Ming

AU - Yu, Chih Jui

N1 - Funding Information: Acknowledgments The authors are grateful for the financial support of this research received from the National Science Council of Taiwan, China under grant number NSC 99-2221-E-259-011 and NSC 100-2120-M-002-008.

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N2 - In this study, we propose a plasmonic free-space filter with dual resonance wavelength by using an asymmetric T-shaped array. The structure under the T-shaped structure forms two metal/insulator/metal cavities with different cavity length. Each cavity supports a specific resonance wavelength. A notch filter for second harmonic generation Nd:YAG laser is also proposed. The filter offers two resonance dips and low sideband. In addition, the filter properties are based on the localized surface plasmon. Therefore, the angle tolerance is extremely high. This makes the proposed structure easy to align. The proposed structure can be used in dual wavelength biosensing detection and dual wavelength thermal emission applications.

AB - In this study, we propose a plasmonic free-space filter with dual resonance wavelength by using an asymmetric T-shaped array. The structure under the T-shaped structure forms two metal/insulator/metal cavities with different cavity length. Each cavity supports a specific resonance wavelength. A notch filter for second harmonic generation Nd:YAG laser is also proposed. The filter offers two resonance dips and low sideband. In addition, the filter properties are based on the localized surface plasmon. Therefore, the angle tolerance is extremely high. This makes the proposed structure easy to align. The proposed structure can be used in dual wavelength biosensing detection and dual wavelength thermal emission applications.

KW - Optical filter

KW - Subwavelength structures

KW - Surface plasmons

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DO - 10.1007/s11468-012-9402-0

M3 - 期刊論文

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SN - 1557-1955

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SP - 385

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JO - Plasmonics

JF - Plasmonics

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ER -

Free-Space Plasmonic Filter with Dual-Resonance Wavelength Using Asymmetric T-Shaped Metallic Array

Abstract

Keywords

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