ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
On the basis of the fluid model of the electron beam, amplification characteristics of a two-dimensional plasma-filled Cherenkov laser at 100 GHz bands are analyzed. By injecting a dense plasma into the background of a Cherenkov laser, the coupling between a relativistic electron beam and an electromagnetic wave at millimeter wavelengths has been improved, and the weak beam–wave interaction problem has become less serious. In particular, we show that due to electron–ion collisions in the background plasma, proper choices of parameters are essential for good operation in this regime. The numerical results indicate that a Cherenkov laser with background plasma can generate higher output power with a greatly enhanced growth rate at a more reasonable interaction length. The plasma injection, in addition, enables the device to gain more output power with a higher beam current. © 2000 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.372070
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