Accession Number : ADP007065

Title :   Broadband Diffractive Lens,

Corporate Author : LAWRENCE LIVERMORE NATIONAL LAB CA

Personal Author(s) : Ceglio, N. M. ; Hawryluk, A. M. ; Gaines, D. P. ; London, R. A. ; Seppala, L. G.

Report Date : 22 MAY 1992

Pagination or Media Count : 6

Abstract : Significant progress has been made toward solving the century-old problem of chromatic aberrations in diffractive optics. Our approach exploits modern materials and microfabrication technology and is very different from the 'purely diffractive strategy', which is commonly employed and which results in multiple diffractive elements separated by a finite distance. We have developed a Fresnel zone plate lens comprised of a serial stack of patterned minus-filters which allows broadband radiation to be focussed (or imaged) without longitudinal or transverse chromatic aberrations. Diffractive optics, such as the Fresnel zone plate shown in Figure 1, are commonly used for imaging and focussing radiation at wavelengths for which refraction is not a viable option.

Descriptors :   *DIFFRACTION, *FRESNEL LENSES, *COHERENT OPTICAL RADIATION, *BROADBAND, *OPTICAL COATINGS, SHORT WAVELENGTHS, OPTICAL IMAGES, COHERENT RADIATION, OPTICAL LENSES, FRESNEL ZONES, SOFT X RAYS, X RAY DIFFRACTION, SYMPOSIA.

Subject Categories : Optics
      Coatings, Colorants and Finishes

Distribution Statement : APPROVED FOR PUBLIC RELEASE