"Hot"-electron laser using a band-band transition
Babadzhan E. I. , Malov Yu. A.
The interaction between an electron beam injected into a superlattice and an electromagnetic field is analyzed. Bragg reflection of electrons from the superlattice is taken into account. The IR gain for the electromagnetic field is derived. The possibility of experimentally observing the effect is discussed for realistic values of the parameters of the superlattice and of the injected electron beam.