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Full-Text Articles in Engineering
Cyclotron Electron Beam Excited Surface Plasmon Polaritons Coherent Radiation, Sen Gong, Tao Zhao, Min Hu, Renbin Zhong, Xiaoxing Chen, Diwei Liu, Ping Zhang, C Zhang, Jian Chen, Biaobin Jin, Huabing Wang, Peiheng Wu, Shenggang Liu
Cyclotron Electron Beam Excited Surface Plasmon Polaritons Coherent Radiation, Sen Gong, Tao Zhao, Min Hu, Renbin Zhong, Xiaoxing Chen, Diwei Liu, Ping Zhang, C Zhang, Jian Chen, Biaobin Jin, Huabing Wang, Peiheng Wu, Shenggang Liu
Faculty of Engineering and Information Sciences - Papers: Part A
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 …
Far-Infrared Measurements Of Cyclotron Resonance And Impurity Transitions In Bulk N-Gaas In Pulsed Magnetic Fields, R A. Lewis, R J. Heron, R G. Clark, R P. Starrett, A V. Skougarevsky
Far-Infrared Measurements Of Cyclotron Resonance And Impurity Transitions In Bulk N-Gaas In Pulsed Magnetic Fields, R A. Lewis, R J. Heron, R G. Clark, R P. Starrett, A V. Skougarevsky
Faculty of Engineering and Information Sciences - Papers: Part A
The photoconductive response of n-GaAs has been measured under laser radiation in the wavelength range 71 to 513 /spl mu/m at temperatures as low as 400 mK and at magnetic fields as high as 42 T. A rich variety of spectral features are observed: cyclotron resonance, transitions associated with D/sup -/, and transitions to stable and metastable hydrogenic states. The use of a pulsed magnet has extended the magnetic field range over which data is available by a factor of three.