caa a22 4500 445305592 CHVBK 20180317142612.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10762-010-9689-x doi (NATIONALLICENCE)springer-10.1007/s10762-010-9689-x Terahertz Gyrotrons at IAP RAS: Status and New Designs [Elektronische Daten] [V. Bratman, M. Glyavin, Yu. Kalynov, A. Litvak, A. Luchinin, A. Savilov, V. Zapevalov] Powerful gyrotrons with radiation frequencies in the range 0.33-0.65THz were demonstrated at the IAP as early as in the 1970-1980s. This trend has recently been renewed in connection with a significant increase in interest in terahertz frequency range. In the course of new experiments, the radiation frequency of pulsed gyrotrons was increased up to 1.3THz and 1THz at the fundamental and third cyclotron harmonics, respectively. In addition, gyrotrons operated in CW regime with a frequency of 0.3THz for technological applications (in collaboration with the University of Fukui, Japan) and 0.26THz for the dynamic nuclear polarization at a high-field NMR were implemented. Designs of a pulsed fundamental-harmonic gyrotron with MW-level power at 0.3THz and a CW kW-level third-harmonic gyrotron with a frequency of 0.4THz are currently developed. Estimates show that modern techniques for the creation of strong magnetic fields now make it possible to realize gyrotrons with an operating frequency at least up to 1-1.5THz. Such generators utilize a relatively low particle energy and can provide higher average power than the existing FELs. Springer Science+Business Media, LLC, 2010 Fundamental and high-harmonic gyrotrons nationallicence Coherent terahertz radiation nationallicence Bratman V. Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia aut Glyavin M. Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia aut Kalynov Yu Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia aut Litvak A. Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia aut Luchinin A. Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia aut Savilov A. Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia aut Zapevalov V. Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia aut Journal of Infrared, Millimeter, and Terahertz Waves Springer US; http://www.springer-ny.com 32/3(2011-03-01), 371-379 1866-6892 32:3<371 2011 32 10762 https://doi.org/10.1007/s10762-010-9689-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10762-010-9689-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bratman V. Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Glyavin M. Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Kalynov Yu Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Litvak A. Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Luchinin A. Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Savilov A. Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Zapevalov V. Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia aut NATIONALLICENCE 773 0- Journal of Infrared, Millimeter, and Terahertz Waves Springer US; http://www.springer-ny.com 32/3(2011-03-01), 371-379 1866-6892 32:3<371 2011 32 10762 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer