Graphene surface emitting terahertz laser: Diffusion pumping concept

Arthur R. Davoyan; Mikhail Yu Morozov; Vyacheslav V. Popov; Akira Satou; Taiichi Otsuji

doi:10.1063/1.4850522

Graphene surface emitting terahertz laser: Diffusion pumping concept

Arthur R. Davoyan, Mikhail Yu Morozov, Vyacheslav V. Popov, Akira Satou, Taiichi Otsuji

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Abstract

We suggest a concept of a tunable graphene-based terahertz (THz) surface emitting laser with diffusion pumping. We employ significant difference in the electronic energy gap of graphene and a typical wide-gap semiconductor, and demonstrate that carriers generated in the semiconductor can be efficiently captured by graphene resulting in population inversion and corresponding THz lasing from graphene. We develop design principles for such a laser and estimate its performance. We predict up to 50 W/cm² terahertz power output for 100 kW/cm² pump power at frequency around 10 THz at room temperature.

Original language	English
Article number	251102
Journal	Applied Physics Letters
Volume	103
Issue number	25
DOIs	https://doi.org/10.1063/1.4850522
Publication status	Published - 2013 Dec 16

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title = "Graphene surface emitting terahertz laser: Diffusion pumping concept",

abstract = "We suggest a concept of a tunable graphene-based terahertz (THz) surface emitting laser with diffusion pumping. We employ significant difference in the electronic energy gap of graphene and a typical wide-gap semiconductor, and demonstrate that carriers generated in the semiconductor can be efficiently captured by graphene resulting in population inversion and corresponding THz lasing from graphene. We develop design principles for such a laser and estimate its performance. We predict up to 50 W/cm2 terahertz power output for 100 kW/cm2 pump power at frequency around 10 THz at room temperature.",

author = "Davoyan, {Arthur R.} and Morozov, {Mikhail Yu} and Popov, {Vyacheslav V.} and Akira Satou and Taiichi Otsuji",

note = "Funding Information: We are grateful to V. Ryzhii for valuable comments and discussions. The work was supported by the Russian Foundation for Basic Research (Grant Nos. 12-02-31888, 12-02-93105, and 13-02-12070), by the Russian Academy of Sciences Program “Fundamentals of Nanostructure Technologies and Nanomaterials”, and by JSPS-RFBR Japan-Russian Collaborative Research Program. ",

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AU - Popov, Vyacheslav V.

AU - Satou, Akira

AU - Otsuji, Taiichi

N1 - Funding Information: We are grateful to V. Ryzhii for valuable comments and discussions. The work was supported by the Russian Foundation for Basic Research (Grant Nos. 12-02-31888, 12-02-93105, and 13-02-12070), by the Russian Academy of Sciences Program “Fundamentals of Nanostructure Technologies and Nanomaterials”, and by JSPS-RFBR Japan-Russian Collaborative Research Program.

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AB - We suggest a concept of a tunable graphene-based terahertz (THz) surface emitting laser with diffusion pumping. We employ significant difference in the electronic energy gap of graphene and a typical wide-gap semiconductor, and demonstrate that carriers generated in the semiconductor can be efficiently captured by graphene resulting in population inversion and corresponding THz lasing from graphene. We develop design principles for such a laser and estimate its performance. We predict up to 50 W/cm2 terahertz power output for 100 kW/cm2 pump power at frequency around 10 THz at room temperature.

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Graphene surface emitting terahertz laser: Diffusion pumping concept

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