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Strategies & Market Trends : Gorilla and King Portfolio Candidates
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To: chaz who wrote (45878)8/26/2001 10:14:43 AM
From: silverstein  Read Replies (1) of 54805
 
Chaz,

If one has a straight edge, the diffraction pattern could be cancelled by illuminating the edge with two
coherent sources of light that differ in phase by 180 degrees. If you have a complicated geometry with
many sharp angles, you can't eliminate the diffraction pattern, you can only reduce it by using multiple
masks that regulate both phase and amplitude to give an optimal diffraction pattern cancellation for
each local circuit geometry. Part of their IP deals with a unique mathematical algorithm that efficiently
calculates the optimal mask characteristics for these complicated geometries..

Seth Silverstein
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