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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 31, Iss. 24 — Aug. 20, 1992
  • pp: 5030–5033

Stark-tuned, far-infrared laser for high-frequency plasma diagnostics

D. K. Mansfield, Peter A. Krug, M. Vocaturo, L. Guttadora, M. Rockmore, and K. Micai  »View Author Affiliations


Applied Optics, Vol. 31, Issue 24, pp. 5030-5033 (1992)
http://dx.doi.org/10.1364/AO.31.005030


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Abstract

A Stark-tuned optically pumped far-infrared CH3OH laser operating at 119 μm has been built. The laser is designed to operate at high power while exhibiting a well-separated Stark doublet. At a pump power of 65 W and an electric field of 1 kV/cm the laser has delivered over 100 mW cw while exhibiting a frequency splitting of 34 MHz. These parameters indicate that this laser would be suitable for use in the present generation of modulated interferometers on large thermonuclear plasma devices. The achieved modulation frequency is more than an order of magnitude higher than could be achieved by using standard techniques.

© 1992 Optical Society of America

History
Original Manuscript: October 7, 1991
Published: August 20, 1992

Citation
D. K. Mansfield, Peter A. Krug, M. Vocaturo, L. Guttadora, M. Rockmore, and K. Micai, "Stark-tuned, far-infrared laser for high-frequency plasma diagnostics," Appl. Opt. 31, 5030-5033 (1992)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-31-24-5030


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References

  1. S. M. Wolfe, K. J. Button, J. Waldman, D. R. Cohn, “Modulated submillimeter laser interferometer system for plasma density measurements,” Appl. Opt. 15, 2645–2648 (1976). [CrossRef] [PubMed]
  2. D. K. Mansfield, H. K. Park, L. C. Johnson, H. M. Anderson, R. Chouinard, V. S. Foote, C. H. Ma, B. J. Clifton, “Multichannel far-infrared laser interferometer for electron density measurements on the tokamak fusion test reactor,” Appl. Opt. 26, 4469–4474 (1987). [CrossRef] [PubMed]
  3. G. Bionducci, M. Inguscio, A. Moretti, F. Strumia, “Design of molecular FIR lasers frequency tunable by Stark effect: electric breakdown of CH3OH, CH3F, CH3I and CH3CN,” Infrared Phys. 9, 297–308 (1979). [CrossRef]
  4. D. K. Mansfield, E. Horlbeck, C. L. Bennett, R. Chouinard, “Enhanced, high power operation of the 119 μm line of optically pumped CH3OH,” Int. J. Infrared Millimeter Waves 6, 867–876 (1985). [CrossRef]
  5. D. T. Hodges, F. B. Foote, R. D. Reel, “Efficient high-power operation of the cw far-infrared waveguide laser,” Appl. Phys. Lett. 29, 662–664 (1976). [CrossRef]
  6. H. R. Fetterman, P. E. Tannenwald, B. J. Clifton, C. D. Parker, W. D. Fitzgerald, N. R. Erikson, “Far-IR heterodyne radiometric measurements with quasioptical Schottky diode mixers,” Appl. Phys. Lett. 33, 151–154 (1978). [CrossRef]

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