External modulators for TeraHertz Quantum Cascade Lasers based on electrically-driven active metamaterials

Peralta, Xomalin G.; Brener, Igal; Padilla, Willie J.; Young, E.; Hoffman, Anthony J.; Cich, Michael Joseph; Averitt, R. D.; Wanke, Michael Clement; Wright, Jeremy Benjamin; Chen, Hou-Tong; O’Hara, John F.; Taylor, Antoinette J.; Waldman, J.; Goodhue, W. D.; Li, Jensen; Reno, John L.

doi:10.1016/j.metmat.2010.04.005

Cited by 16 publications

(6 citation statements)

References 24 publications

(28 reference statements)

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“…A maximum modulation depth of 60% with a large degree of modulation linearity is demonstrated. 92 While the modulation speed of the device was not measured, it is expected to be in the MHz range.…”

Section: © Woodhead Publishing Limited 2013mentioning

confidence: 99%

Terahertz wireless communications

Federici

Moeller²,

2013

Handbook of Terahertz Technology for Imaging, Sensing and Communications

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Section: © Woodhead Publishing Limited 2013mentioning

confidence: 99%

Terahertz wireless communications

Federici

Moeller²,

2013

Handbook of Terahertz Technology for Imaging, Sensing and Communications

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“…The modulation speed of the discussed reconfigurable metamaterial was limited by the low phase transition speed of liquid crystals. As described in the following sections, alternative mechanisms can be used to develop electrically reconfigurable metamaterials with higher modulation speeds, such as changing the carrier concentration in Schottky junctions [49][50][51][52][53][54], heterostructures [55,56], and gated graphene [57][58][59][60][61][62][63][64][65].…”

Section: Electrically Controlled Reconfigurable Metamaterials For Ter...mentioning

confidence: 99%

Reconfigurable metamaterials for terahertz wave manipulation

2017

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Reconfigurable metamaterials have emerged as promising platforms for manipulating the spectral and spatial properties of terahertz waves without being limited by the characteristics of naturally existing materials. Here, we present a comprehensive overview of various types of reconfigurable metamaterials that are utilized to manipulate the intensity, phase, polarization, and propagation direction of terahertz waves. We discuss various reconfiguration mechanisms based on optical, electrical, thermal, and mechanical stimuli while using semiconductors, superconductors, phase-change materials, graphene, and electromechanical structures. The advantages and disadvantages of different reconfigurable metamaterial designs in terms of modulation efficiency, modulation bandwidth, modulation speed, and system complexity are discussed in detail.

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“…Essentially this makes frequency tuning dominant over resonance switching [121]. This mechanism was responsible for the metamaterial devices demonstrated to externally modulate THz quantum cascade lasers at 2.4 and 2.8 THz, with a maximum modulation depth of 60% and a large degree of modulation linearity [122].…”

Section: Electrically Switchable Metamaterials: Modulation Of Terahermentioning

confidence: 99%

Manipulation of terahertz radiation using metamaterials

Chen

O’Hara

Azad

et al. 2011

Laser & Photonics Reviews

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159

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During the past decade electromagnetic metamaterials have realized many exotic phenomena that are difficult or impossible using naturally occurring materials. It is their resonantly enhanced interaction with electromagnetic waves that underpins their attractive qualities, which are increasingly important in the terahertz frequency range. Passive and active terahertz metamaterials and devices have enabled novel functionality and unprecedented terahertz device performance. These demonstrations prove their potential to address the so-called terahertz gap, a technology vacuum associated with the deficiency of natural materials with a desirable terahertz response.

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External modulators for TeraHertz Quantum Cascade Lasers based on electrically-driven active metamaterials

Cited by 16 publications

References 24 publications

Terahertz wireless communications

Terahertz wireless communications

Reconfigurable metamaterials for terahertz wave manipulation

Manipulation of terahertz radiation using metamaterials

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