Marginal phase correction of truncated Bessel beams
JOSA A, Vol. 17, Issue 6, pp. 1059-1066 (2000)
http://dx.doi.org/10.1364/JOSAA.17.001059
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Abstract
Approximate analytic expressions are obtained for evaluating the axial intensity and the central-lobe diameter of J0 Bessel beams transmitted through a finite-aperture phase filter. A reasonable quality factor governing the axial-intensity behavior of a phase-undistorted truncated Bessel beam is found to be the inverse square root of the Fresnel number defined, for a given aperture, from the axial point of geometrical shadow. Additional drastic reduction of axial-intensity oscillations is accomplished by using marginal phase correction of the beam instead of the well-known amplitude apodization. A procedure for analytically calculating an optimal monotonic slowly varying correction phase function is described.
© 2000 Optical Society of America
[Optical Society of America ]
OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(050.1940) Diffraction and gratings : Diffraction
(220.1230) Optical design and fabrication : Apodization
(350.5500) Other areas of optics : Propagation
(350.7420) Other areas of optics : Waves
Citation
Andrey G. Sedukhin, "Marginal phase correction of truncated Bessel beams," J. Opt. Soc. Am. A 17, 1059-1066 (2000)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-17-6-1059
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