Quantum statistical properties of an FEL amplifier
Abstract
Consideration is given to the problem of photon quantum statistics of a single particle free-electron laser (FEL) amplifier in the small-signal cold beam regime to first order in the electron quantum recoil. The initial radiation wave is an arbitrary coherent state. It is shown that Glauber coherence is not preserved by the FEL interaction if the initial coherent state is not the vacuum, even if the electron quantum recoil (absence of gain) is neglected. The first two moments of the final photon distribution are evaluated and sub- (super)-Poissonian photon statistics are found for a negative (positive) resonance parameter.
- Publication:
-
IEEE Journal of Quantum Electronics
- Pub Date:
- July 1985
- DOI:
- 10.1109/JQE.1985.1072747
- Bibcode:
- 1985IJQE...21.1069D
- Keywords:
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- Free Electron Lasers;
- Quantum Statistics;
- Coherent Radiation;
- Glauber Theory;
- Photon Density;
- Poisson Density Functions;
- Lasers and Masers