Accession Number : ADA139285

Title :   Study of Gain, Bandwidth, and Tunability of a Millimeter-Wave Free-Electron Laser Operating in the Collective Regime.

Descriptive Note : Memorandum rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Gold,S. H. ; Black,W. M. ; Freund,H. P. ; Granatstein,V. L. ; Jackson,R. H.

Report Date : 29 FEB 1984

Pagination or Media Count : 26

Abstract : Frequency-resolved measurements of the emission of a collective free-electron laser operating at millimeter wavelengths have shown emission spectra that agree with theoretical predictions for the collective free-electron laser instability. Broad tunability, moderate emission linewidths, and high single frequency gain have been observed. In addition, adjusting the axial field in the end region of the interaction has been found in some cases to cause a large increase in measured power and efficiency. (Author)

Descriptors :   *Tunable lasers, *Millimeter waves, *Emission spectra, Measurement, High gain, Frequency, Bandwidth, Experimental data, Diagnosis(General), Interactions, Free electrons

Subject Categories : Lasers and Masers
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE