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Extended Feedback System for Coupled Sub-THz Gyro-Devices to Provide New Regimes of Operation

Marek, Alexander; Avramidis, Konstantinos; Ginzburg, Naum; Illy, Stefan; Jelonnek, John; Jin, Jianbo; Thumm, Manfred

Abstract (englisch):
A new type of high-power pulsed source in the millimeter and submillimeter frequency range, utilizing the method of passive mode locking, was proposed in 2015 by the Institute of Applied Physics (IAP-RAS) in Nizhny Novgorod. This principle, well known from laser physics, allows the generation of a periodic series of powerful, coherent, ultrashort pulses. In the millimeter and submillimeter wavelength range, this can be realized using an amplifier and a saturable absorber coupled in a feedback loop. For the coupling of the two devices, a sophisticated feedback system is required. Such a system, based on simple overmoded waveguide components, was previously proposed by the authors. The present article shows how the proposed feedback system can be extended, allowing for a wide range of possible operation regimes for two coupled gyro-devices. Particularly noteworthy is the application of the modified feedback system for the realization of a two-stage amplifier in the subterahertz (sub-THz) range. Furthermore, it seems to be possible to use two helical gyro-devices coupled in the proposed way as a source of coherent pulses, as a free-running or locked continuous wave (CW) source, and as a two-stage amplifier. ... mehr

Zugehörige Institution(en) am KIT Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2020
Sprache Englisch
Identifikator ISSN: 0018-9383, 1557-9646
KITopen-ID: 1000128309
HGF-Programm 31.03.02 (POF III, LK 01) Plasma Heizsysteme
Erschienen in IEEE transactions on electron devices
Verlag Institute of Electrical and Electronics Engineers (IEEE)
Band 67
Heft 12
Seiten 5729–5735
Nachgewiesen in Scopus
Web of Science
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