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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 1 — Jan. 8, 2007
  • pp: 12–23

Readout contrast beyond diffraction limit by a slab of random nanostructures

Tai Chi Chu, Din Ping Tsai, and Wei-Chih Liu  »View Author Affiliations

Optics Express, Vol. 15, Issue 1, pp. 12-23 (2007)

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A simplified Fourier optics approach is applied to study how near-field optical disks retrieve evanescent signals through random nanostructure. The statistical properties of the random nanostructures are used to realize the general behavior of near-field optical disks. The mechanism of its super-resolution capability and an analytical expression of the readout contrast of near-field optical disks with random apertures are derived. The resolution of near-field optical disk is determined by the size of the random nanostructure.

© 2007 Optical Society of America

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(050.2770) Diffraction and gratings : Gratings
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(210.4590) Optical data storage : Optical disks

ToC Category:
Diffraction and Gratings

Original Manuscript: September 7, 2006
Revised Manuscript: November 16, 2006
Manuscript Accepted: December 27, 2006
Published: January 8, 2007

Tai Chi Chu, Din Ping Tsai, and Wei-Chih Liu, "Readout contrast beyond diffraction limit by a slab of random nanostructures," Opt. Express 15, 12-23 (2007)

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