Graphene terahertz devices

Taiichi Otsuji

doi:10.1007/978-4-431-55372-4_8

Graphene terahertz devices

Taiichi Otsuji

RIEC - Information Communication Platforms Division

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

In this section, recent advances and future trends in graphene terahertz (THz) devices are described. First, the fundamental basis of optoelectronic properties of graphene is introduced. Second, ultrafast nonequilibrium carrier dynamics in optically pumped graphene is described, giving rise to population inversion and resultant THz gain by stimulated interband photon emission. Third, graphene active plasmonics are described in which plasmon dispersion and modes are theoretically addressed, leading to one important aspect of giant THz gain by stimulated interband photon emission in inverted graphene. Fourth, science and technology toward the creation of current-injection-pumped graphene THz lasers are described. Fifth, some other important functional devices including THz modulators and photodetectors/mixers are described. Finally, trends and the future of graphene THz devices are summarized.

Original language	English
Title of host publication	Frontiers of Graphene and Carbon Nanotubes
Subtitle of host publication	Devices and Applications
Publisher	Springer Japan
Pages	105-122
Number of pages	18
ISBN (Electronic)	9784431553724
ISBN (Print)	9784431553717
DOIs	https://doi.org/10.1007/978-4-431-55372-4_8
Publication status	Published - 2015 Jan 1

Keywords

Graphene
Laser
Plasmon
Terahertz

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10.1007/978-4-431-55372-4_8

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abstract = "In this section, recent advances and future trends in graphene terahertz (THz) devices are described. First, the fundamental basis of optoelectronic properties of graphene is introduced. Second, ultrafast nonequilibrium carrier dynamics in optically pumped graphene is described, giving rise to population inversion and resultant THz gain by stimulated interband photon emission. Third, graphene active plasmonics are described in which plasmon dispersion and modes are theoretically addressed, leading to one important aspect of giant THz gain by stimulated interband photon emission in inverted graphene. Fourth, science and technology toward the creation of current-injection-pumped graphene THz lasers are described. Fifth, some other important functional devices including THz modulators and photodetectors/mixers are described. Finally, trends and the future of graphene THz devices are summarized.",

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N2 - In this section, recent advances and future trends in graphene terahertz (THz) devices are described. First, the fundamental basis of optoelectronic properties of graphene is introduced. Second, ultrafast nonequilibrium carrier dynamics in optically pumped graphene is described, giving rise to population inversion and resultant THz gain by stimulated interband photon emission. Third, graphene active plasmonics are described in which plasmon dispersion and modes are theoretically addressed, leading to one important aspect of giant THz gain by stimulated interband photon emission in inverted graphene. Fourth, science and technology toward the creation of current-injection-pumped graphene THz lasers are described. Fifth, some other important functional devices including THz modulators and photodetectors/mixers are described. Finally, trends and the future of graphene THz devices are summarized.

AB - In this section, recent advances and future trends in graphene terahertz (THz) devices are described. First, the fundamental basis of optoelectronic properties of graphene is introduced. Second, ultrafast nonequilibrium carrier dynamics in optically pumped graphene is described, giving rise to population inversion and resultant THz gain by stimulated interband photon emission. Third, graphene active plasmonics are described in which plasmon dispersion and modes are theoretically addressed, leading to one important aspect of giant THz gain by stimulated interband photon emission in inverted graphene. Fourth, science and technology toward the creation of current-injection-pumped graphene THz lasers are described. Fifth, some other important functional devices including THz modulators and photodetectors/mixers are described. Finally, trends and the future of graphene THz devices are summarized.

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KW - Laser

KW - Plasmon

KW - Terahertz

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Graphene terahertz devices

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Keywords

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