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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 24, Iss. 2 — Feb. 1, 2007
  • pp: 482–492

Dynamics of the linearly polarized fundamental Gaussian light wave

S. R. Seshadri  »View Author Affiliations


JOSA A, Vol. 24, Issue 2, pp. 482-492 (2007)
http://dx.doi.org/10.1364/JOSAA.24.000482


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Abstract

A continuous planar array of dipoles that are oriented in a particular direction and have an amplitude distribution that is Gaussian in the paraxial limit is introduced as a source for the fundamental Gaussian light wave. The radiation intensity of the Gaussian light wave is determined and its characteristics are analyzed. The universal Gaussian beam factor is deduced and identified as the radiation intensity of the scalar Gaussian wave. The total radiated power, the mean center of the localized wave, and the beam widths of the intensity distribution are obtained. The ratio of the power in the Gaussian wave to that in the corresponding paraxial Gaussian beam is used as a measure of the quality of the paraxial beam approximation. A limiting factor for the power ratio is introduced as an indicator for the acceptability of the paraxial beam approximation. The cross section and the beam widths of the localized light wave are investigated in the large and small k w 0 limits, where k is the wavenumber and w 0 is the beam waist at the input plane. The beam width of the full Gaussian wave is found to be less than that of the corresponding paraxial Gaussian beam both for the scalar Gaussian wave and for the Gaussian light wave.

© 2007 Optical Society of America

OCIS Codes
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(260.1960) Physical optics : Diffraction theory
(350.5500) Other areas of optics : Propagation

ToC Category:
Physical Optics

History
Original Manuscript: February 27, 2006
Revised Manuscript: September 4, 2006
Manuscript Accepted: September 6, 2006

Citation
S. R. Seshadri, "Dynamics of the linearly polarized fundamental Gaussian light wave," J. Opt. Soc. Am. A 24, 482-492 (2007)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-24-2-482


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References

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