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free-electron laser

free–electron laser

noun free–elec·tron laser \ˈfrē-i-ˈlek-ˌträn-\

Definition of FREE-ELECTRON LASER

:  a laser that can be tuned over a wide range of frequencies and that produces electromagnetic radiation by the motion of electrons moving at relativistic velocities in a magnetic field

First Known Use of FREE-ELECTRON LASER

1978

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