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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 22, Iss. 9 — May. 1, 1983
  • pp: 1318–1324

Transportation of far-IR beams for use in plasma diagnostics

M. R. Siegrist, I. Kjelberg, and R. Behn  »View Author Affiliations


Applied Optics, Vol. 22, Issue 9, pp. 1318-1324 (1983)
http://dx.doi.org/10.1364/AO.22.001318


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Abstract

In this paper we discuss certain aspects concerning the transport and focusing of a high power far-IR laser beam into a plasma for Thomson scattering measurements. To attain the required megawatt power level in a D2O laser, it is important to use efficiently the volume of the optically pumped vapor. The best known method to achieve this is use of an unstable resonator which produces a beam with an annular intensity profile. This has a negative effect on the quality of the focused beam and on the intensity profile incident on the beam dump. A system utilizing a Cassegrainian telescope and spatial filtering techniques is found to be a good solution.

© 1983 Optical Society of America

History
Original Manuscript: November 17, 1983
Published: May 1, 1983

Citation
M. R. Siegrist, I. Kjelberg, and R. Behn, "Transportation of far-IR beams for use in plasma diagnostics," Appl. Opt. 22, 1318-1324 (1983)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-22-9-1318

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