Abstract
The performance of two-dimensional Talbot array illuminators is
discussed in terms of compression ratio, fabrication cost, and
illumination efficiency. By comparing two array-illuminator
families, we try to answer the question, “Which Talbot array
illuminator provides the best illumination performance and requires the
least expenditure in fabrication for a given compression
ratio?” We further present experimental results obtained with a
quartz-glass four-level surface-relief array illuminator designed for a
two-dimensional compression ratio of 16 and fabricated with only two
lithographic masks.
© 1998 Optical Society of America
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