Graphene surface emitting terahertz laser: Diffusion pumping concept

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

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)


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 languageEnglish
Article number251102
JournalApplied Physics Letters
Issue number25
Publication statusPublished - 2013 Dec 16


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