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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

  • Vol. 17, Iss. 3 — Mar. 1, 2000
  • pp: 447–455

Axially symmetric on-axis flat-top beam

Qing Cao and Sien Chi  »View Author Affiliations


JOSA A, Vol. 17, Issue 3, pp. 447-455 (2000)
http://dx.doi.org/10.1364/JOSAA.17.000447


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Abstract

A synthesis method for arbitrary on-axis intensity distributions from axially symmetric fields is developed in the paraxial approximation. As an important consequence, a new pseudo-nondiffracting beam, the axially symmetric on-axis flat-top beam (AFTB), is given by an integral transform form. This AFTB is completely determined by three simple parameters: the central spatial frequency Sc, the on-axis flat-top length L, and the on-axis central position zc. When LSc≫1, this AFTB can give a nearly flat-top intensity distribution on the propagation axis. In particular, this AFTB approaches the nondiffracting zero-order Bessel J0 beam when L→∞. It is revealed that the superposition of multiple AFTB fields can give multiple on-axis flattop intensity regions when some appropriate conditions are satisfied.

© 2000 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(220.1140) Optical design and fabrication : Alignment
(350.5500) Other areas of optics : Propagation

Citation
Qing Cao and Sien Chi, "Axially symmetric on-axis flat-top beam," J. Opt. Soc. Am. A 17, 447-455 (2000)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-17-3-447

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