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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 17, Iss. 12 — Dec. 1, 2000
  • pp: 2208–2215

High-efficiency production of propagation-invariant spot arrays

Jari Lautanen, Ville Kettunen, Pasi Laakkonen, and Jari Turunen  »View Author Affiliations

JOSA A, Vol. 17, Issue 12, pp. 2208-2215 (2000)

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Tailoring of the transverse intensity profiles of propagation-invariant optical fields is considered. The design of diffractive elements capable of realizing such fields by Fourier synthesis is discussed. High-efficiency realization of finite-aperture approximations of the constructed fields is demonstrated in a system consisting of two multilevel diffractive elements. The first element is a diffractive toroidal lens, which focuses the incident field into a ring pattern. The second diffractive element, located at the focal plane of the first element, introduces the phase modulation necessary to realize the desired transverse intensity profile behind a separate collimating lens. The influence of the fabrication errors of the diffractive elements on the fidelity of the propagation-invariant spot array is simulated, and system-integration aspects based on substrate-mode planar-integrated optics are considered.

© 2000 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(260.1960) Physical optics : Diffraction theory

Original Manuscript: March 1, 2000
Revised Manuscript: July 17, 2000
Manuscript Accepted: August 11, 2000
Published: December 1, 2000

Jari Lautanen, Ville Kettunen, Pasi Laakkonen, and Jari Turunen, "High-efficiency production of propagation-invariant spot arrays," J. Opt. Soc. Am. A 17, 2208-2215 (2000)

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