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A 160-femtosecond optical image processor based on a conjugated polymer
Science (New York, N.Y.)
|August 26, 1994
Summary
Conjugated polymers enable ultrafast optical processors. A novel polymer, poly(1,6-heptadiester), was used in a correlator to process images in under 160 femtoseconds, reaching 3 x 10^16 operations/sec.
Area of Science:
- Nonlinear optics
- Materials science
- Optical processing
Background:
- Degenerate ground-state conjugated polymers possess significant third-order nonlinear optical properties.
- These properties, including two-photon absorption, are crucial for developing advanced optical processors.
- Ultrafast optical processing demands materials with specific nonlinear optical characteristics.
Purpose of the Study:
- To investigate the potential of degenerate ground-state conjugated polymers for ultrafast optical processing.
- To construct and evaluate an optical correlator using a processable conjugated polymer.
- To demonstrate high-speed image correlation with a novel polymer-based device.
Main Methods:
- Fabrication of a four-wave mixing optical correlator using poly(1,6-heptadiester).
- Utilizing the polymer's nonlinear optical properties for image correlation.
- Characterization of the processor's speed and accuracy for image processing.
Main Results:
- The optical correlator successfully processed two 5000-pixel images.
- Correlation was achieved in less than 160 femtoseconds.
- Peak processing rates reached 3 x 10^16 operations per second.
Conclusions:
- Poly(1,6-heptadiester) is a viable material for ultrafast optical processing applications.
- The developed correlator demonstrates the feasibility of high-speed, continuously updatable optical computation.
- This research opens avenues for advanced photonic devices leveraging nonlinear optical polymers.
