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Proceedings Paper

Fabrication of multiphase optical elements for weighted array spot generation
Author(s): Paul McKee; David Wood; Mark P. Dames; C. Dix
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Paper Abstract

Techniques have been developed for the design and fabrication of surface relief holographic optical elements used to split single beams into multiple beams, of either equal or unequal intensities. The designs were fabricated as chrome on glass masters by standard electron beam mask-making techniques. Patterns were transferred using photolithography and reactive ion etching to form the required relief image in quartz. Binary phase holograms have been fabricated with measured efficiencies of around 70% for a range of uniform split arrays up to 20 X 20 with beam intensity ratios within 1% of the design values. Weight matrix holograms, both binary phase inversion symmetric and 4 phase non-inversion symmetric, have been fabricated with a similar measured efficiency.

Paper Details

Date Published: 1 July 1991
PDF: 7 pages
Proc. SPIE 1461, Practical Holography V, (1 July 1991); doi: 10.1117/12.44706
Show Author Affiliations
Paul McKee, British Telecom Research Labs. (United Kingdom)
David Wood, British Telecom Research Labs. (United Kingdom)
Mark P. Dames, British Telecom Research Labs. (United Kingdom)
C. Dix, British Telecom Research Labs. (United Kingdom)

Published in SPIE Proceedings Vol. 1461:
Practical Holography V
Stephen A. Benton, Editor(s)

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