Mode Competition, Suppression And Control In Fel Oscillators

Baruch Levush; Thomas M. Antonsen Jr.

doi:10.1117/12.978342

18 November 1989 Mode Competition, Suppression And Control In Fel Oscillators

Baruch Levush, Thomas M. Antonsen Jr.

Proceedings Volume 1039, 13th Intl Conf on Infrared and Millimeter Waves; (1989) https://doi.org/10.1117/12.978342
Event: 13th International Conference on Infrared and Millimeter Waves, 1987, Honolulu, HI, United States

Abstract

The effect of multimode interaction on the efficiency of a low gain FEL oscillator fed by a continuous beam is investigated. Calculations that enable one to design a device in such a way that it will operate at a single frequency with maximum efficiency will he presented. The model we consider is the one dimensional, low gain oscillator.' Due to low gain, the radiation field in the resonator can he expressed as a superposition of empty cavity modes whose amplitudes and phases change slowly in time (compared with the transit time of the electrons through the interaction region) due to their interaction with the beam. The field at any point will he nearly periodic in time with a period equal to the round trip travel time of radiation in the cavity, which we assume to he much smaller than the time scale over which the amplitudes change. We may then numerically integrate the following set of equations.

Citation Download Citation

Baruch Levush and Thomas M. Antonsen Jr. "Mode Competition, Suppression And Control In Fel Oscillators", Proc. SPIE 1039, 13th Intl Conf on Infrared and Millimeter Waves, (18 November 1989); https://doi.org/10.1117/12.978342

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available