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Optics Letters

Optics Letters


  • Vol. 9, Iss. 10 — Oct. 1, 1984
  • pp: 443–444

Pressure effects on the frequency of continuous-wave optically pumped far-infrared lasers

M. Inguscio and K. M. Evenson  »View Author Affiliations

Optics Letters, Vol. 9, Issue 10, pp. 443-444 (1984)

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The frequency of the 170.6-μm cw CH3OH optically pumped laser emission has been remeasured at different pressures without observing the pressure shift observed by Lawandy and Koepf [Opt. Lett. 5, 383 (1980)]. The far-infrared frequency was synthesized with two stabilized CO2 lasers. No measurable pressure shift over the operating pressure range of the laser was observed, and the frequency was confirmed to be 1 757 526.3 MHz. However, competing lasing lines were found to produce spurious effects on the frequency. These effects may explain the apparent shifts.

© 1984 Optical Society of America

Original Manuscript: June 25, 1984
Manuscript Accepted: July 24, 1984
Published: October 1, 1984

M. Inguscio and K. M. Evenson, "Pressure effects on the frequency of continuous-wave optically pumped far-infrared lasers," Opt. Lett. 9, 443-444 (1984)

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  1. P. M. Plainchamp, IEEE J. Quantum Electron. QE-15, 860 (1979). [CrossRef]
  2. A discussion of the independent measurements can be found in F. Strumia, M. Inguscio, Infrared and Millimeter Waves, K. J. Button, ed. (Academic, New York, 1982), Vol. 5, pp. 129–213.
  3. N. M. Lawandy, G. A. Koepf, Opt. Lett. 5, 383 (1980). [CrossRef] [PubMed]
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  6. K. M. Evenson, M. Inguscio, D. A. Jennings, F. R. Petersen, “The point-contact diode at laser frequencies,” J. Appl. Phys. (to be published).
  7. H. R. Fetterman, B. J. Clifton, P. E. Tannenwald, C. D. Parker, Appl. Phys. Lett. 24, 70 (1974). [CrossRef]
  8. P. W. Anderson, Phys. Rev. 76, 647 (1949). [CrossRef]

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