Observation of Sideband Instability in the Novosibirsk Terahertz Free Electron Laser

Author

Kubarev, V.V. ; Vinokurov, N.A. ; Kotenkov, V.V. ; Kulipanov, G.N. ; Matveenko, A.N. ; Salikova, T.V. ; Serednyakov, S.S. ; Scheglov, M.A.

Author_Institution

Russian Acad. of Sci., Novosibirsk

fYear

2006

fDate

18-22 Sept. 2006

Firstpage

415

Lastpage

415

Abstract

Sideband instability was observed very clearly in the long-pulse regime of the Novosibirsk terahertz free electron laser (FEL) by a Bruker vacuum Fourier spectrometer IFS-66v. For positive frequency detuning, simultaneous generation of six sideband modes was observed. Mode competition and mode switching have been registered. Negative frequency detuning decreased the number of sideband modes and an single-mode generation with the narrowest classical spectrum has been obtained for sufficiently large detuning .

Keywords

Fourier transform spectrometers; free electron lasers; stability; submillimetre wave lasers; Bruker vacuum Fourier spectrometer IFS-66v; Novosibirsk terahertz free electron laser; mode competition; mode switching; negative frequency detuning; positive frequency detuning; sideband instability observation; Free electron lasers; Frequency; Gaussian processes; Laser modes; Laser theory; Nuclear physics; Optical imaging; Potential well; Spectroscopy; Submillimeter wave technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on

Conference_Location

Shanghai

Print_ISBN

1-4244-0400-2

Electronic_ISBN

1-4244-0400-2

Type

conf

DOI

10.1109/ICIMW.2006.368623

Filename

4222357