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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 24 — Dec. 15, 2008
  • pp: 2916–2918

Reduction of focal-spot size using dichromats in absorbance modulation

Hsin-Yu Tsai, Henry I. Smith, and Rajesh Menon  »View Author Affiliations

Optics Letters, Vol. 33, Issue 24, pp. 2916-2918 (2008)

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We experimentally verify the focusing characteristics of dichromats, a new class of circular-symmetric diffractive-optical lenses that generate, in the same focal plane, focal spots for one wavelength and ring-shaped spots with central nodes for another wavelength. Using a dichromat, we illuminate a thin photochromic layer and demonstrated point-spread-function compression of the transmitted focal spot.

© 2008 Optical Society of America

OCIS Codes
(050.1380) Diffraction and gratings : Binary optics
(110.5220) Imaging systems : Photolithography
(160.4330) Materials : Nonlinear optical materials
(230.3990) Optical devices : Micro-optical devices
(050.1965) Diffraction and gratings : Diffractive lenses
(110.4235) Imaging systems : Nanolithography

ToC Category:
Diffraction and Gratings

Original Manuscript: August 4, 2008
Revised Manuscript: October 30, 2008
Manuscript Accepted: November 3, 2008
Published: December 4, 2008

Hsin-Yu Tsai, Henry I. Smith, and Rajesh Menon, "Reduction of focal-spot size using dichromats in absorbance modulation," Opt. Lett. 33, 2916-2918 (2008)

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