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Coherent and tunable terahertz radiation from graphene surface plasmon polaritons excited by an electron beam

Journal Article


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Abstract


  • Although surface plasmon polaritons (SPPs) resonance in graphene can be tuned in the terahertz

    regime, transforming such SPPs into coherent terahertz radiation has not been achieved. Here, we

    propose a graphene-based coherent terahertz radiation source with greatly enhanced intensity. The

    radiation works at room temperature, it is tunable and can cover the whole terahertz regime. The

    radiation intensity generated with this method is 400 times stronger than that from SPPs at a

    conventional dielectric or semiconducting surface and is comparable to that from the most

    advanced photonics source such as a quantum cascade laser. The physical mechanism for this

    strong radiation is presented. The phase diagrams defining the parameters range for the occurrence

    of radiation is also shown.

Authors


  •   Liu, Shenggang (external author)
  •   Chao Zhang
  •   Hu, Min (external author)
  •   Chen, Xiaoxing (external author)
  •   Zhang, Ping (external author)
  •   Gong, Sen (external author)
  •   Zhao, Tao (external author)
  •   Zhong, Renbin (external author)

Publication Date


  • 2014

Citation


  • Liu, S., Zhang, C., Hu, M., Chen, X., Zhang, P., Gong, S., Zhao, T. & Zhong, R. (2014). Coherent and tunable terahertz radiation from graphene surface plasmon polaritons excited by an electron beam. Applied Physics Letters, 104 (20), 201104-1-201104-5.

Scopus Eid


  • 2-s2.0-84901430441

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3468&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2459

Start Page


  • 201104-1

End Page


  • 201104-5

Volume


  • 104

Issue


  • 20

Abstract


  • Although surface plasmon polaritons (SPPs) resonance in graphene can be tuned in the terahertz

    regime, transforming such SPPs into coherent terahertz radiation has not been achieved. Here, we

    propose a graphene-based coherent terahertz radiation source with greatly enhanced intensity. The

    radiation works at room temperature, it is tunable and can cover the whole terahertz regime. The

    radiation intensity generated with this method is 400 times stronger than that from SPPs at a

    conventional dielectric or semiconducting surface and is comparable to that from the most

    advanced photonics source such as a quantum cascade laser. The physical mechanism for this

    strong radiation is presented. The phase diagrams defining the parameters range for the occurrence

    of radiation is also shown.

Authors


  •   Liu, Shenggang (external author)
  •   Chao Zhang
  •   Hu, Min (external author)
  •   Chen, Xiaoxing (external author)
  •   Zhang, Ping (external author)
  •   Gong, Sen (external author)
  •   Zhao, Tao (external author)
  •   Zhong, Renbin (external author)

Publication Date


  • 2014

Citation


  • Liu, S., Zhang, C., Hu, M., Chen, X., Zhang, P., Gong, S., Zhao, T. & Zhong, R. (2014). Coherent and tunable terahertz radiation from graphene surface plasmon polaritons excited by an electron beam. Applied Physics Letters, 104 (20), 201104-1-201104-5.

Scopus Eid


  • 2-s2.0-84901430441

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3468&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2459

Start Page


  • 201104-1

End Page


  • 201104-5

Volume


  • 104

Issue


  • 20