Stimulated coherent cyclotron scattering, millimeter, and submillimeter wave generator

Patent · Tue May 18 04:00:00 EDT 1976

OSTI ID:7259493

Sprangle, P A; Granatstein, V L

An improved apparatus and technique is described for providing tunable high power millimeter and submillimeter radiation. A tunable source of microwave energy is coupled to an evacuated drift tube in which an intense relativistic electron beam is propagated while constrained in a magnetic field having a direction parallel to the direction of the electron beam. The microwave energy is directed in a direction opposite to the direction of the electron beam to generate millimeter or submillimeter radiation by backscattering from the intense relativistic electron beam. By tuning the frequency of the microwave energy to be mismatched by a specific amount from the electron cyclotron frequency in the rest frame of the electrons at high beam currents, a coherent scattering of microwave energy from electron bunches will produce enhanced power output of millimeter and submillimeter radiation.

• Assignee: Secretary of the Navy
• Patent Number(s): US 3958189
• OSTI ID: 7259493
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
DESIGN
ELECTROMAGNETIC RADIATION
FAR INFRARED RADIATION
INFRARED RADIATION
LASERS
MICROWAVE RADIATION
RADIATIONS