free-electron laser


free-elec·​tron laser ˈfrē-i-ˈlek-ˌträn- How to pronounce free-electron laser (audio)
: 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

Word History

First Known Use

1978, in the meaning defined above

Time Traveler
The first known use of free-electron laser was in 1978

Dictionary Entries Near free-electron laser

Cite this Entry

“Free-electron laser.” Dictionary, Merriam-Webster, Accessed 4 Dec. 2022.

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