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Cyclotron electron beam excited surface plasmon polaritons coherent radiation

Journal Article


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Abstract


  • A physical mechanism of electron beam excitation of surface plasmon polaritons (SPPs) on the circular cylindrical structure and transformation into coherent radiation is proposed. Here SPPs on the circular cylindrical structures are excited by a cyclotron electron beam (CEB) rather than by the linearly moving electron beam (LEB). This change leads to an essential consequence due to the natural periodicity of 2π in structure and CEB, and this dual natural periodicity makes the SPPs transformation possible and brings significant excellences. HEM hybrid modes and TM0n modes SPPs can be excited and propagate along a cyclotron trajectory together with the CEB to attract energy from CEB continuously to compensate the energy loss; the phase velocity of SPPs synchronizes the CEB; the process of the excitation and transformation is longer. Therefore, the transformed power density is enhanced and reaches up to 1010W/cm2. The cyclotron frequency of the electron beam is 1THz, but the frequency regime of the SPPs and the radiation are much higher, up to hundreds of terahertz. The mechanism presented in this letter opens the way for developing the desired room temperature, powerful and coherent light radiation sources from the infrared to the ultraviolet frequency regime.

Authors


  •   Gong, Sen (external author)
  •   Zhao, Tao (external author)
  •   Hu, Min (external author)
  •   Zhong, Renbin (external author)
  •   Chen, Xiaoxing (external author)
  •   Liu, Diwei (external author)
  •   Zhang, Ping (external author)
  •   Chao Zhang
  •   Chen, Jian (external author)
  •   Jin, Biaobin (external author)
  •   Wang, Huabing (external author)
  •   Wu, Peiheng (external author)
  •   Liu, Shenggang (external author)

Publication Date


  • 2015

Citation


  • Gong, S., Zhao, T., Hu, M., Zhong, R., Chen, X., Liu, D., Zhang, P., Zhang, C., Chen, J., Jin, B., Wang, H., Wu, P., Liu, S. et al (2015). Cyclotron electron beam excited surface plasmon polaritons coherent radiation. Europhysics Letters: a letters journal exploring the frontiers of physics, 111 (2), 24004-p1-24004-p5.

Scopus Eid


  • 2-s2.0-84939538297

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=5474&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4453

Start Page


  • 24004-p1

End Page


  • 24004-p5

Volume


  • 111

Issue


  • 2

Abstract


  • A physical mechanism of electron beam excitation of surface plasmon polaritons (SPPs) on the circular cylindrical structure and transformation into coherent radiation is proposed. Here SPPs on the circular cylindrical structures are excited by a cyclotron electron beam (CEB) rather than by the linearly moving electron beam (LEB). This change leads to an essential consequence due to the natural periodicity of 2π in structure and CEB, and this dual natural periodicity makes the SPPs transformation possible and brings significant excellences. HEM hybrid modes and TM0n modes SPPs can be excited and propagate along a cyclotron trajectory together with the CEB to attract energy from CEB continuously to compensate the energy loss; the phase velocity of SPPs synchronizes the CEB; the process of the excitation and transformation is longer. Therefore, the transformed power density is enhanced and reaches up to 1010W/cm2. The cyclotron frequency of the electron beam is 1THz, but the frequency regime of the SPPs and the radiation are much higher, up to hundreds of terahertz. The mechanism presented in this letter opens the way for developing the desired room temperature, powerful and coherent light radiation sources from the infrared to the ultraviolet frequency regime.

Authors


  •   Gong, Sen (external author)
  •   Zhao, Tao (external author)
  •   Hu, Min (external author)
  •   Zhong, Renbin (external author)
  •   Chen, Xiaoxing (external author)
  •   Liu, Diwei (external author)
  •   Zhang, Ping (external author)
  •   Chao Zhang
  •   Chen, Jian (external author)
  •   Jin, Biaobin (external author)
  •   Wang, Huabing (external author)
  •   Wu, Peiheng (external author)
  •   Liu, Shenggang (external author)

Publication Date


  • 2015

Citation


  • Gong, S., Zhao, T., Hu, M., Zhong, R., Chen, X., Liu, D., Zhang, P., Zhang, C., Chen, J., Jin, B., Wang, H., Wu, P., Liu, S. et al (2015). Cyclotron electron beam excited surface plasmon polaritons coherent radiation. Europhysics Letters: a letters journal exploring the frontiers of physics, 111 (2), 24004-p1-24004-p5.

Scopus Eid


  • 2-s2.0-84939538297

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=5474&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4453

Start Page


  • 24004-p1

End Page


  • 24004-p5

Volume


  • 111

Issue


  • 2