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Telecommunications and Radio Engineering
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ISSN Print: 0040-2508
ISSN Online: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v75.i4.50
pages 355-361

METHODS FOR OBTAINING MULTIFREQUENCY LASING IN RESONANT CAVITY OF THE THZ LASER

V. P. Radionov
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura Str., Kharkiv 61085, Ukraine
P. K. Nesterov
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
V. K. Kiseliov
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine; V.N.Karazin Kharkiv National University 4, Svobody sq., 61022, Kharkiv, Ukraine

ABSTRACT

In a number of areas of radio physics when developing heterodyne devices that use lasers of terahertz frequency range (THz) as radiation sources it is required to obtain a stable distance between the frequencies of the signal and heterodyne oscillation channels. This paper discusses the different ways of the problem solution, in particular, the possibility of the radiation of several lasing frequencies from the range of the gain medium emission in the total volume of the gain medium that gives a number of advantages in comparison with conventional methods. The scheme of the THz laser with combined multichannel resonant cavity and the method for obtaining a stable frequency difference in each channel are proposed. Developed multichannel laser can be used in conventional schemes of the interferometers and polarimeters, as well as in other measuring systems where the simultaneous generation of the THz radiation through the different channels with the frequency difference within the amplification band of the gain medium is required. This opens up new possibilities for the use of the THz lasers in the measuring systems.

REFERENCES

  1. Kamenev, Yu.E., Kiseliov, V.K., Kuleshov E.M. et al., Submillimeter Laser Interferometer- Polarimeter for Plasma Diagnostics, Int. J. Infrared and Millimeter Waves. 19(6):835-848.

  2. Scherbov, V.А. and Nesterov, P.K., Doppler frequency shifters of submillimeter wave range, Fisika i technika mm i submm voln, in: Sbornik nauch. Trudov, Nauk. dumka, Kiev: 251-256 (in Russian).

  3. Scherbov, V.А., Кuleshov, Y.М., and Nesterov, P.K., The submillimeter lasers application in interferometers for the diagnostics of high-temperature plasma, Preprint No376, Kharkov: 11 p. (in Russian).

  4. Schmidt, V.V., Dyubko, S.F., Switch, V.A. et al., Measurement of the gas laser frequency with a wavelength of 0.337 mm and 0.311 mm, Radiotekhnika i Elektronika. 14(9):1708-1709 (in Russian).

  5. Bondarev, V.A., Valitov, R.A., Jabotinsky, M.E. et al., НСN laser frequency measurement, Izmerit. technika. 11:5-8 (in Russian).

  6. Volf, S.W., Button, K.J., Aldman, J.V. et al., A modulated submillimeter laser interferometer system for plasma density measurements, Appl. Optics. 15(11):699-703.

  7. Kіseliov, V.K. and Radionov, V.P., Two-frequency ring gas-discharge laser, Patent for invention № 78871 Ukraine, № а200504172 (in Russian).

  8. Kamenev, Yu.E. and Kuleshov, Y.М., Two-frequency lasing with orthogonal polarizations in the HCN-laser, Kvantovaya elektronika. 14(12):236-238 (in Russian).

  9. Kіseliov, V.K., Radionov, V.P., and Nesterov, P.K., Multifrequency terahertz laser, Patent for invention № 106643 Ukraine (in Russian).

  10. Radionov, V.P., Submillimeter laser with continuous frequency adjustment within the limits of laser spectrum line, Telecommunications and Radio Engineering, 63(11):1023-1028.


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