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    dct:description """
              This paper reviews recent advances in emission of terahertz radiation from two-dimensional (2D) electron systems in semiconductor nano-heterostructures. 2D plasmon resonance is first presented to demonstrate intense broadband terahertz emission from InGaP/InGaAs/GaAs and InAlAs/InGaAs/InP material systems. The device structure is based on a high-electron mobility transistor and incorporates the author's original interdigitated dual-grating gates. Second topic focuses on graphene, a monolayer carbon-atomic honeycomb lattice crystal, exhibiting unique carrier transport and optical properties owing to massless and gapless energy spectrum. Coherent stimulated terahertz emission from femtosecond infrared-laser pumped epitaxial graphene is experimentally observed, reflecting the occurrence of negative dynamic conductivity and population inversion
            """ ;
    dct:identifier "hal-00814199" ;
    dct:issued "2026-05-11T11:16:36.436585"^^xsd:dateTime ;
    dct:language "en" ;
    dct:modified "2026-05-11T11:16:36.436589"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Emission of Terahertz Radiation from Two-Dimensional Electron Systems in Semiconductor Nano- and Hetero-Structures" ;
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            vcard:fn "CCSD" ] ;
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    dcat:keyword "graphene",
        "heterostructures",
        "infoeu-reposemanticsarticle",
        "journal-articles",
        "physcondcm-msphysics-physicscondensed-matter-cond-matmaterials-science-cond-matmtrl-sci",
        "plasmons",
        "terahertz-emission",
        "two-dimensional-electrons" ;
    dcat:landingPage <ISSN:%201866-6892> .

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    dct:issued "2026-05-11T11:16:36.442135"^^xsd:dateTime ;
    dct:modified "2026-05-11T11:16:36.424649"^^xsd:dateTime ;
    dct:title "Emission of Terahertz Radiation from Two-Dimensional Electron Systems in Semiconductor Nano- and Hetero-Structures" ;
    dcat:accessURL <https://hal.science/hal-00814199> .

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