Polarization-independent active metamaterial for high-frequency terahertz modulation

Oliver Paul; Christian Imhof; Bert Laegel; Sandra Wolff; Jan Heinrich; Sven Höfling; Alfred Forchel; Remigius Zengerle; Rene Beigang; Marco Rahm

Polarization-independent active metamaterial for high-frequency terahertz modulation

Oliver Paul^*, Christian Imhof, Bert Laegel, Sandra Wolff, Jan Heinrich, Sven Höfling, Alfred Forchel, Remigius Zengerle, Rene Beigang, Marco Rahm

^*Corresponding author for this work

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

112 Citations (Scopus)

Abstract

We present a polarization-independent metamaterial design for the construction of electrically tunable terahertz (THz) devices. The implemented structure consists of an array of gold crosses fabricated on top of an n-doped gallium arsenide (GaAs) layer. Utilizing THz time-domain spectroscopy, we show that the electric resonance and thus the transmission properties of the cross structure can be tuned by an externally applied bias voltage. We further demonstrate the fast amplitude modulation of a propagating THz wave for modulation frequencies up to 100 kHz. (C) 2008 Optical Society of America

Original language	English
Pages (from-to)	819-827
Number of pages	9
Journal	Optics Express
Volume	17
Issue number	2
Publication status	Published - 19 Jan 2009

Keywords

NEGATIVE-INDEX
REFRACTION

Cite this

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title = "Polarization-independent active metamaterial for high-frequency terahertz modulation",

abstract = "We present a polarization-independent metamaterial design for the construction of electrically tunable terahertz (THz) devices. The implemented structure consists of an array of gold crosses fabricated on top of an n-doped gallium arsenide (GaAs) layer. Utilizing THz time-domain spectroscopy, we show that the electric resonance and thus the transmission properties of the cross structure can be tuned by an externally applied bias voltage. We further demonstrate the fast amplitude modulation of a propagating THz wave for modulation frequencies up to 100 kHz. (C) 2008 Optical Society of America",

keywords = "NEGATIVE-INDEX, REFRACTION",

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T1 - Polarization-independent active metamaterial for high-frequency terahertz modulation

AU - Paul, Oliver

AU - Imhof, Christian

AU - Laegel, Bert

AU - Wolff, Sandra

AU - Heinrich, Jan

AU - Höfling, Sven

AU - Forchel, Alfred

AU - Zengerle, Remigius

AU - Beigang, Rene

AU - Rahm, Marco

PY - 2009/1/19

Y1 - 2009/1/19

N2 - We present a polarization-independent metamaterial design for the construction of electrically tunable terahertz (THz) devices. The implemented structure consists of an array of gold crosses fabricated on top of an n-doped gallium arsenide (GaAs) layer. Utilizing THz time-domain spectroscopy, we show that the electric resonance and thus the transmission properties of the cross structure can be tuned by an externally applied bias voltage. We further demonstrate the fast amplitude modulation of a propagating THz wave for modulation frequencies up to 100 kHz. (C) 2008 Optical Society of America

AB - We present a polarization-independent metamaterial design for the construction of electrically tunable terahertz (THz) devices. The implemented structure consists of an array of gold crosses fabricated on top of an n-doped gallium arsenide (GaAs) layer. Utilizing THz time-domain spectroscopy, we show that the electric resonance and thus the transmission properties of the cross structure can be tuned by an externally applied bias voltage. We further demonstrate the fast amplitude modulation of a propagating THz wave for modulation frequencies up to 100 kHz. (C) 2008 Optical Society of America

KW - NEGATIVE-INDEX

KW - REFRACTION

M3 - Article

SN - 1094-4087

VL - 17

SP - 819

EP - 827

JO - Optics Express

JF - Optics Express

IS - 2

ER -

Polarization-independent active metamaterial for high-frequency terahertz modulation

Abstract

Keywords

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