Free‐Electron Lasers Achieve High Microwave Power
DOI: 10.1063/1.2814522
The output wavelength of a free‐electron laser varies as the inverse square of the energy of the electrons whose undulation through the FEL generates the laser light. Accelerators and storage rings of the kind one uses for highenergy physics have provided FEL researchers with electron beams of sufficient energy to yield laser output in the near infrared and even in the visible (see