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Optics Letters

Optics Letters


  • Vol. 23, Iss. 24 — Dec. 15, 1998
  • pp: 1939–1941

Binary-phase zone-plate arrays based on hybrid solgel glass

J. T. Rantala, P. Äyräs, R. Levy, S. Honkanen, M. R. Descour, and N. Peyghambarian  »View Author Affiliations

Optics Letters, Vol. 23, Issue 24, pp. 1939-1941 (1998)

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An organically modified silane zirconate-based solgel material is used for the fabrication of binary-phase zone-plate arrays. The synthesized hybrid solgel material has a negative tone under UV exposure and can be patterned by a UV-lithography process. The transmittance of the material is nearly 100%, and the refractive index is 1.52. Two different diffractive lens arrays with focal lengths of 5 and 42 cm have been fabricated. The average roughness of the zone surface is less than 20 nm. The diffraction efficiencies of the lens arrays are measured as a function of modulation depth and exposure dose. A diffraction efficiency of 30% is achieved.

© 1998 Optical Society of America

OCIS Codes
(050.1380) Diffraction and gratings : Binary optics
(050.1970) Diffraction and gratings : Diffractive optics
(160.2750) Materials : Glass and other amorphous materials
(160.6060) Materials : Solgel
(220.3740) Optical design and fabrication : Lithography
(220.4000) Optical design and fabrication : Microstructure fabrication

J. T. Rantala, P. Äyräs, R. Levy, S. Honkanen, M. R. Descour, and N. Peyghambarian, "Binary-phase zone-plate arrays based on hybrid solgel glass," Opt. Lett. 23, 1939-1941 (1998)

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