Diffractive lens fabricated with mostly zeroth-order gratings

Frederick T. Chen, Harold G. Craighead

Research output: Contribution to journalArticlepeer-review

52 Scopus citations


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).

Original languageEnglish (US)
Pages (from-to)177-179
Number of pages3
JournalOptics Letters
Issue number3
StatePublished - Feb 1 1996

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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