= Emmett Leith
{c}
{title2=1927-2005}
= Emmett N. Leith
{c}
{synonym}
<Emmett Leith> was an <electrical engineer> whose work with <Juris Upatnieks> developed wavefront reconstruction through a communication-theory treatment of <holography>. Their 1962 paper analyzed recording and reconstruction as a sequence of modulation, propagation and intensity detection, and tested methods for improving the reconstructed signal.<Reconstructed Wavefronts and Communication Theory by Emmett Leith and Juris Upatnieks>[Abstract and experimental account]{ref}
The connection is useful because an intensity recording can contain information about an optical wave's phase through <interference> with a reference wave. Changing the recording geometry can separate the desired reconstruction from unwanted terms. Their work helped make clear three-dimensional holographic images practical while linking optical processing with <spatial frequency> analysis.<Reconstructed Wavefronts and Communication Theory by Emmett Leith and Juris Upatnieks>[Communication-theory formulation and generalized holograms]{ref}
\Image[https://upload.wikimedia.org/wikipedia/commons/6/65/Professor_Emmett_Leith_1963.jpg]
{title=Portrait of <Emmett Leith>}
{width=240}
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