Superparallel holographic correlator for ultrafast database searches

M. S. Shahriar*, R. Tripathi, M. Kleinschmit, J. Donoghue, W. Weathers, M. Huq, J. T. Shen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


We describe a superparallel holographic optical correlator that performs two-dimensional spatial and angular multiplexing simultaneously. The key step in this architecture is the use of a holographic multiplexer to split a query image into many copies before it applies them to the holographic database. A holographic demultiplexer, in conjunction with an aperture, is used to identify the location and the angle of the brightest correlation peak. This architecture uses only O(√N) detector elements to search through N unsorted images in a single query. We demonstrate the basic features of this architecture, using three spatial locations with eight angle-multiplexed images in each location.

Original languageEnglish (US)
Pages (from-to)525-527
Number of pages3
JournalOptics Letters
Issue number7
StatePublished - Apr 1 2003

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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