Coherent short wave radiation from a solid state free electron laser
Abstract
The idea of using a crystal lattice or a superlattice as an undulator for a free electron laser is explored. A purely classical treatment of relativistic positrons channeling through the proposed structure is performed in a self consistent fashion involving the wave equation for the radiating electromagnetic field and the kinetic equation for the positron distribution function. The gain coefficient for a forward radiating field is obtained in closed analytic form and is studied numerically for a (110) planar channeling in Si. This result, combined with a feedback mechanism arising from Bragg diffraction within the basic crystal lattice, may lead to an instability of the radiation inside the crystal.
- Publication:
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Presented at the 7th International Free-Electron Laser Conference
- Pub Date:
- September 1985
- Bibcode:
- 1985ifel.confT....B
- Keywords:
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- Coherent Radiation;
- Free Electron Lasers;
- Solid State Lasers;
- Superlattices;
- Electromagnetic Radiation;
- Mathematical Models;
- Short Wave Radiation;
- Lasers and Masers