@inproceedings{a583c291f49544e896c1316169c6b95e,
title = "Radiation stability and hyperfine mode structure of the terahertz NovoFEL",
abstract = "The hyperfine spectral structure of radiation − laser modes of the Novosibirsk terahertz free electron laser (NovoFEL) has been measured in two its main operating regimes: resonance unstable regime with maximum output power and stabilized regime with maximum spectral power. The monochromaticity of the mode structure is shown to be practically independent of the laser operating regime and reaches a value of 2·10-8. The mode composition weakly depends on the operating regime for a well aligned electron beam and consists of many longitudinal TEMq00 modes (supermode). In the case of a poorly aligned electron beam, transverse modes of the optical cavity are also excited; its intensities strongly increase in the resonance regime.",
author = "Kubarev, {V. V.} and Getmanov, {Ya V.} and Shevchenko, {O. A.}",
note = "Funding Information: The work was done at the shared research center SSTRC on the basis of the Novosibirsk FEL at BINP SB RAS, using equipment supported by project RFMEFI62119X0022. Publisher Copyright: {\textcopyright} 2020 American Institute of Physics Inc. All rights reserved. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; 2020 Internetional Conference on Synchrotron and Free Electron Laser Radiation: Generation and Application, SFR 2020 ; Conference date: 13-07-2020 Through 16-07-2020",
year = "2020",
month = nov,
day = "17",
doi = "10.1063/5.0030503",
language = "English",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
editor = "Boris Knyazev and Nikolay Vinokurov",
booktitle = "Synchrotron and Free Electron Laser Radiation",
}