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Optics Letters

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  • Vol. 4, Iss. 9 — Sep. 1, 1979
  • pp: 280–282

High performance at new FIR wavelengths from optically pumped CH2F2

E. J. Danielewicz, T. A. Galantowicz, F. B. Foote, R. D. Reel, and D. T. Hodges  »View Author Affiliations


Optics Letters, Vol. 4, Issue 9, pp. 280-282 (1979)
http://dx.doi.org/10.1364/OL.4.000280


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Abstract

A parametric study to clarify efficiency limiting mechanisms and to maximize the performance of the CH2F2 laser has led to the discovery of five new CO2 pump lines and ten new FIR laser lines. The wavelengths of the new lines fill a previous gap in the spectrum of strong cw FIR laser lines. With appropriate cavity design, measured conversion efficiencies exceed 30% of the maximum theoretical limit. Optimization of the output coupling for the strongest line at λ = 184.6 μm has doubled the maximum output power from the identical system using the λ = 118.8-μm line of CH3OH. The exceptionally high conversion efficiency (33%) occurring at the highest-available CO2 pump power indicates that the limits on scaling to higher output powers have not yet been reached. The results confirm the high-performance capability of the CH2F2 laser, the strongest cw optically pumped FIR laser reported to date.

© 1979 Optical Society of America

History
Original Manuscript: May 1, 1979
Published: September 1, 1979

Citation
E. J. Danielewicz, T. A. Galantowicz, F. B. Foote, R. D. Reel, and D. T. Hodges, "High performance at new FIR wavelengths from optically pumped CH2F2," Opt. Lett. 4, 280-282 (1979)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-4-9-280


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References

  1. E. J. Danielewicz, C. O. Weiss, “New efficient cw far-infrared optically pumped CH2F2 laser,” IEEE J. Quantum Electron. QE-14, 705–707 (1978). [CrossRef]
  2. T. A. Galantowicz, E. J. Danielewicz, F. B. Foote, D. T. Hodges, “Characteristics of non-diffusion-limited optically pumped cw lasers—experimental results for CH2F2,” in Proceedings of the International Conference on Lasers ’78, V. J. Corcoran, ed. (STS Press, McLean, Virginia, 1979).
  3. D. T. Hodges, “A review of advances in optically pumped FIR lasers,” Infrared Phys. 18, 375–384 (1978). [CrossRef]
  4. 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]
  5. D. T. Hodges, F. B. Foote, R. D. Reel, “High-power operation and scaling behavior of cw optically pumped FIR waveguide lasers,” IEEE J. Quantum Electron. QE-13, 491–494 (1977). [CrossRef]
  6. A. Scalabrin, K. M. Evenson, “Additional cw FIR laser lines from optically pumped CH2F2,” Opt. Lett. 4, 277 (1979). [CrossRef] [PubMed]
  7. G. Busse, R. Thurmaier, “Use of the opto-acoustic effect to discover cw far-infrared laser lines, ” Appl. Phys. Lett. 31, 194–195 (1977). [CrossRef]
  8. K. Walzer, M. Tacke, G. Busse, “Opto-acoustic spectra of some FIR-laser active molecules,” Infrared Phys. 19, 175–177 (1979). [CrossRef]
  9. F. B. Foote, D. T. Hodges, “Absolute power measurements from 100 to 200 μm using common laboratory detectors,” Infrared Phys., to be published.
  10. T. A. DeTemple, S. A. Lawton, “The identification of candidate transitions for optically pumped far infrared lasers, methyl halides and D2O,” IEEE J. Quantum Electron. QE-14, 762–768 (1978). [CrossRef]

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