Abstract
A storage-ring free-electron laser (PEL) uses an electron storage ring as the relativistic e-beam source and an undulator-magnet structure to couple the kinetic energy of the electrons into coherent laser light. Work has been under way for three years on the storage ring AGO at Orsay, France to realize a FEL on a recirculated beam with the goal of increasing the power and efficiency of the FEL. Considerable progress has been made toward the initial goal of achieving oscillation, and only one problem–mirror degradation–now stands in the way of success.
© 1983 Optical Society of America
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