Abstract
In order to demonstrate the usability of gyrotron oscillators as frequency step tunable high power millimeter-wave sources, experiments on a 1 MW, 140 GHz TE22,6 gyrotron with a built-in quasi-optical (q. o.) mode converter have been performed. By varying the operating parameters of the tube, a series of oscillations in the frequency range from 114 GHz to 166 GHz were excited. To avoid reflections, caused by the required vacuum barrier window, the gyrotron was equipped with a Brewster window. The achieved output power levels between 0.85 and 1.05 MW are compared to measurements carried out with the same tube using a conventional single-disk window. These experiments showed that even by using a q. o. mode converter, the influence of window reflections on the gyrotron oscillatory behavior cannot be removed completely.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Gantenbein, G., et al., Int. J. Electronics,78, (1995), 771–787.
Thumm, M., et al., Proc. 20th Int. Conf. on Infrared and Millimeter Waves, Lake Buena Vista (Orlando), USA, (1995), 281–282.
Piosczyk. B., et al., IEEE Trans. on Plasma Science, PS-24, (1996), 579–585.
Möbius, A., Thumm, A., Gyrotron output launchers and output tapers in Gyrotron Oscillators, C. Edgecombe, ed., Taylor & Francis, London 1993, Chapter 7, 179–222.
Thumm, M., et al., Proc. 21st Int. Conf. on Infrared and Millimeter Waves, Berlin, Germany, (1996), AT6.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Braz, O., Dammertz, G., Kuntze, M. et al. D-band frequency step-tuning of A 1 MW gyrotron using a brewster output window. Int J Infrared Milli Waves 18, 1465–1477 (1997). https://doi.org/10.1007/BF02678305
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02678305