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Optics Letters

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  • Vol. 18, Iss. 19 — Oct. 1, 1993
  • pp: 1669–1671

Second-order spatial characterization of hard-edge diffracted beams

R. Martínez-Herrero and P. M. Mejías  »View Author Affiliations


Optics Letters, Vol. 18, Issue 19, pp. 1669-1671 (1993)
http://dx.doi.org/10.1364/OL.18.001669


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Abstract

Second-order characteristic beam parameters, including beamwidth and far-field divergence, are generalized for hard-edge diffracted fields. On the basis of, the so-called moments formalism these parameters are shown to propagate through ABCD optical systems according to laws similar to those applied to systems with no hard-edge openings. The power–content ratio of any diffracted beam within a certain region is evaluated in terms of such generalized parameters. An alternative analytical expression of such generalized far-field divergence is also provided that is suitable for experimental measurements. Application to Gaussian beams diffracted by slits is included.

© 1993 Optical Society of America

History
Original Manuscript: May 19, 1993
Published: October 1, 1993

Citation
R. Martínez-Herrero and P. M. Mejías, "Second-order spatial characterization of hard-edge diffracted beams," Opt. Lett. 18, 1669-1671 (1993)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-18-19-1669


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