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Proceedings Paper

Ion exchange in glass for the manufacture of continuous-phase free-space diffractive optical elements
Author(s): Risto-Pekka Salmio; Jyrki Saarinen; Jari Pekka Turunen; Ari Tervonen
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Paper Abstract

Manufacture of continuous-phase diffractive free-space elements by thermal ion exchange in glass has been proposed and demonstrated. In contrast to aiming at binary phase modulation by trying to minimize the inevitable lateral diffusion, side diffusion to obtain a smoothly carrying continuous phase profile was deliberately employed. This can be done if the mask aperture configuration and ion exchange time are numerically optimized to result in the desired optical function.

Paper Details

Date Published: 22 October 1996
PDF: 3 pages
Proc. SPIE 2943, Gradient-Index Optics in Science and Engineering, (22 October 1996); doi: 10.1117/12.255521
Show Author Affiliations
Risto-Pekka Salmio, Helsinki Univ. of Technology (Finland)
Jyrki Saarinen, Helsinki Univ. of Technology (Finland)
Jari Pekka Turunen, Univ. of Joensuu (Finland)
Ari Tervonen, Optonex Ltd. (Finland)


Published in SPIE Proceedings Vol. 2943:
Gradient-Index Optics in Science and Engineering

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