Title :
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
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;
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
DOI :
10.1109/ICIMW.2006.368623
