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Optics Express

Optics Express

  • Editor: J. H. Eberly
  • Vol. 4, Iss. 10 — May. 10, 1999
  • pp: 400–410

Three-dimensional field structure in open unstable cavities Part II: Active cavity results

Chris C. Khamnei and Kurt E. Oughstun  »View Author Affiliations


Optics Express, Vol. 4, Issue 10, pp. 400-410 (1999)
http://dx.doi.org/10.1364/OE.4.000400


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Abstract

The three-dimensional field distribution of the diffractive cavity mode structure in an active, open, unstable laser resonator is presented as a function of the equivalent Fresnel number of the cavity. The active cavity mode structures are compared to that of the corresponding passive cavity so that the effects of a spatially extended, homogeneously broadened, saturable gain medium on the cavity field structure may be ascertained. The qualitative structure of this intracavity field distribution, including the central intensity core (or oscillator filament), is explained in terms of the Fresnel zone structure defined over the cavity feedback aperture.

© Optical Society of America

OCIS Codes
(140.3410) Lasers and laser optics : Laser resonators
(140.4780) Lasers and laser optics : Optical resonators

ToC Category:
Research Papers

History
Original Manuscript: March 5, 1999
Published: May 10, 1999

Citation
Kurt Oughstun and Chris Khamnei, "Three-dimensional field structure in open unstable cavities Part II: Active cavity results," Opt. Express 4, 400-410 (1999)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-4-10-400


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References

  1. A. E. Siegman, Lasers (University Science Books, 1986) Chapter 8.
  2. E. A. Sziklas and A. E. Siegman, Mode calculations in unstable resonators with flowing saturable gain. 2: fast Fourier transform method," Appl. Opt. 14, 1874-1889 (1975). [CrossRef] [PubMed]
  3. K. E. Oughstun, "Unstable resonator modes," in Progress in Optics, vol. xxiv, E. Wolf, ed. (North-Holland, 1987) pp. 165- 387. [CrossRef]
  4. D. B. Rensch, "Three-dimensional unstable resonator calculations with laser medium," Appl. Opt. 13, 2546-2561 (1974). [CrossRef] [PubMed]
  5. P. W. Milloni, "Criteria for the thin-sheet gain approximation," Appl. Opt. 16, 2794-2795 (1977). [CrossRef]
  6. C. C. Khamnei, Open Unstable Optical Resonator Mode Field Theory (Ph. D. dissertation, University of Vermont, 1998.
  7. Yu. A. Anan�v, "Angular divergence of radiation of solid-state lasers," Sov. Phys. Usp. 14, 197-215 (1971). [CrossRef]

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