LAUSR.org creates dashboard-style pages of related content for over 1.5 million academic articles. Sign Up to like articles & get recommendations!

Generating tunable THz radiation using rippled density plasma driven by density modulated relativistic electron beam

Photo from wikipedia

The generation of Terahertz (THz) radiation by a density modulated relativistic electron beam (REB) using rippled density plasma, oriented at a suitable angle along the direction of radiation wave, is… Click to show full abstract

The generation of Terahertz (THz) radiation by a density modulated relativistic electron beam (REB) using rippled density plasma, oriented at a suitable angle along the direction of radiation wave, is being investigated in this paper. The non-linear interaction of density modulated REB with ripple density plasma modifies the dispersion relation of the radiation wave co-propagating with the beam wave. Using fluid equations model, it is found that the requisite ripple wavelength decreases as the ripple angle increases and becomes steeper for resonant THz radiation emission. Thus, the radiation wavelength in terahertz range can be tuned by varying the ripple wavelength and beam energy. In addition, it is investigated that the growth rate of THz radiation emission scales as the one-third power of beam current, two-third power of ripple plasma density, and one-third power of modulation index. The output power and efficiency of THz radiation emission depend on the modulation index and reach the largest value wh...

Keywords: plasma; thz radiation; radiation; density; beam

Journal Title: Physics of Plasmas
Year Published: 2017

Link to full text (if available)


Share on Social Media:                               Sign Up to like & get
recommendations!

Related content

More Information              News              Social Media              Video              Recommended



                Click one of the above tabs to view related content.