Abstract
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.
Original language | English (US) |
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Pages (from-to) | 1939-1941 |
Number of pages | 3 |
Journal | Optics letters |
Volume | 23 |
Issue number | 24 |
DOIs | |
State | Published - Dec 15 1998 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics