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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 12, Iss. 10 — Oct. 1, 1973
  • pp: 2353–2366

Three-Dimensional Diffraction Calculations of Laser Resonator Modes

Arthur N. Chester  »View Author Affiliations


Applied Optics, Vol. 12, Issue 10, pp. 2353-2366 (1973)
http://dx.doi.org/10.1364/AO.12.002353


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Abstract

The numerical technique of Fox and Li for computing laser resonator modes is applied to the case of three-dimensional laser resonators without circular or rectangular symmetries. The computation techniques are explained, and results are presented for several specific resonators, both stable and unstable. The effect of laser medium shock waves on the refractive index of the optical cavity is approximated by a thin sheet near one resonator mirror. The near-field burn pattern of the laser output beam exactly follows the phase pattern of the shock fronts, in good qualitative agreement with experimental results reported for gas dynamic lasers. The far-field output beam demonstrates pronounced astigmatism, being considerably broadened at right angles to the flow direction, and it suggests a breakup of the far-field pattern into several separate intensity spots. The optical phase of the resonator mode is quite smooth, even in the worst cases studied, suggesting the possibility of phase compensation by suitable optics.

© 1973 Optical Society of America

History
Original Manuscript: March 2, 1973
Published: October 1, 1973

Citation
Arthur N. Chester, "Three-Dimensional Diffraction Calculations of Laser Resonator Modes," Appl. Opt. 12, 2353-2366 (1973)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-12-10-2353

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