| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Electron–Cyclotron Laser Using Free-Electron Two-Quantum Stark Radiation in a Strong Uniform Axial Magnetic Field and an Alternating Axial Electric Field in a Voltage-Supplied Pill-Box Cavity |
| S. H. Kim** |
Church Road 9236, Dallas, Texas 75231, USA
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| Cite this article: |
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S. H. Kim 2016 Chin. Phys. Lett. 33 035201 |
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Abstract We consider the radiation from the beam electrons traveling in a strong uniform axial magnetic field and an axial alternating electric field of wavelength $\lambda_{\rm w}$ generated by a voltage-supplied pill-box cavity. The beam electrons emit genuine laser radiation that propagates only in the axial direction through free-electron two-quantum Stark radiation. We find that laser radiation takes place only at the expense of the axial kinetic energy when $\lambda_{\rm w}\ll c/(\omega_{\rm c}/\gamma)$, where $\omega_{\rm c}/\gamma$ is the relativistic electron–cyclotron frequency. We formulate the laser power based on quantum-wiggler electrodynamics, and envision a laser of length 10 m with estimated power 0.1 GW/(kA) in the $10^{-4}$ cm wavelength range.
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Received: 09 October 2015
Published: 31 March 2016
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