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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. 10, Iss. 4 — Apr. 1, 1993
  • pp: 614–632

Coherent imaging of periodic thick fine isolated structures

J. T. Sheridan and C. J. R. Sheppard  »View Author Affiliations


JOSA A, Vol. 10, Issue 4, pp. 614-632 (1993)
http://dx.doi.org/10.1364/JOSAA.10.000614


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Abstract

The diffraction orders and coherent bright and dark field images produced by isolated steps and grooves (notches and trenches) are examined. The isolated structures are approximated by means of a grating with a large period that contains small, widely separated, lamellar structures. The rigorous modal method for TE polarized incident light is used for the numerical calculations. Structures in two types of dielectric material, refractive index n = 1.5 and n = 4.0, are discussed. The images are examined for variations with several parameters, including width and thickness of the structure and focus position. Several approximate methods for calculating these images, based on first-order approximations, are suggested.

© 1993 Optical Society of America

History
Original Manuscript: March 18, 1992
Revised Manuscript: September 14, 1992
Manuscript Accepted: September 30, 1992
Published: April 1, 1993

Citation
J. T. Sheridan and C. J. R. Sheppard, "Coherent imaging of periodic thick fine isolated structures," J. Opt. Soc. Am. A 10, 614-632 (1993)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-10-4-614

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