Concept: free electron
Label (en): free-electron laser
Description (en): type of laser
Also known as (en): Free electron laser: FEL
Label (es): láser de electrones libres
Also known as (es): Laser de electrones libres
Label (ca): làser d'electrons lliures
Description (ca): tipus de làser
Label (it): Laser a elettroni liberi
Subclass of: laser