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Optics Letters

Optics Letters


  • Vol. 21, Iss. 3 — Feb. 1, 1996
  • pp: 177–179

Diffractive lens fabricated with mostly zeroth-order gratings

Frederick T. Chen and Harold G. Craighead  »View Author Affiliations

Optics Letters, Vol. 21, Issue 3, pp. 177-179 (1996)

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We demonstrate a spherical diffractive lens fabricated in fused quartz for use at the 632.8-nm wavelength. The lens is constructed by use of a modulated two-dimensional binary grating with a high transmitted zeroth-order efficiency. Rigorous eigenmode analysis is used to correlate the desired phase modulation with the fill factor. Fabrication requires only one lithography step. Using the lens, we were able to image a focal spot with a diffraction-limited spot size (FWHM).

© 1996 Optical Society of America

Original Manuscript: October 6, 1995
Published: February 1, 1996

Frederick T. Chen and Harold G. Craighead, "Diffractive lens fabricated with mostly zeroth-order gratings," Opt. Lett. 21, 177-179 (1996)

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