BWO Generators for Terahertz Dielectric Measurements

Author

Komandin, G.A. ; Chuchupal, S.V. ; Lebedev, S.P. ; Goncharov, Y.G. ; Korolev, A.F. ; Porodinkov, O.E. ; Spektor, I.E. ; Volkov, Andrey A.

Author_Institution

A.M. Prokhorov Gen. Phys. Inst., Moscow, Russia

Volume

3

Issue

4

fYear

2013

fDate

Jul-13

Firstpage

440

Lastpage

444

Abstract

For many years, the terahertz frequency domain has been neglected compared to neighboring parts of the spectrum. However, the situation has changed with the development of backward-wave oscillator (BWO) and BWO-based spectrometers. Packaged (30-180 GHz) and unpackaged (0.18-1.50 THz) BWOs are now being produced. The 0.18-1.50 THz frequency range is of greatest interest for spectroscopic research. To work with unpackaged BWOs, a universal magnetic focusing system on a permanent magnet with a protective housing shielding the magnetic field was developed. The stable generation of radiation with a frequency of up to 2.1 THz without geometry change was achieved. A universal automated power-supply unit with high-speed BWO frequency radiation scanning and a high degree of BWO electronic security was also designed for generating unpackaged BWOs through a heating and high cathode voltage.

Keywords

backward wave oscillators; BWO based spectrometers; BWO electronic security; BWO generators; backward wave oscillator; frequency range; geometry change; high cathode voltage; high speed BWO frequency radiation scanning; magnetic field; permanent magnet; protective housing shielding; spectroscopic research; stable generation; terahertz dielectric measurement; terahertz frequency domain; universal automated power supply unit; universal magnetic focusing system; Backward-wave oscillator (BWO); THz spectroscopy; stable terahertz (THz) radiation source; submillimeter technique;

fLanguage

English

Journal_Title

Terahertz Science and Technology, IEEE Transactions on

Publisher

ieee

ISSN

2156-342X

Type

jour

DOI

10.1109/TTHZ.2013.2255914

Filename

6517990