Abstract
Measurements of the degenerate wave mixing phenomenon that occurs between a pump and signal beam after the onset of transparency in a polymer dispersed liquid crystal (PDLC) are reported. The experimental procedure and results are described. These materials contain nematic microdroplets in a polymeric matrix; therefore, they produce a strong light scattering that depends on the difference between the refractive indices of the nematic droplets and the polymer. In a dye-doped sample, the light absorption produces thermal indexing. A strong change in the transmission occurs when the liquid-crystal droplets become isotropic, thus approaching the refractive index of the polymeric matrix. In this way, the effect of self-transparency can be observed. The results are believed to be the first demonstration of nonlinear light diffraction in a PDLC sample.
Original language | English (US) |
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Pages | 152, 154-115 |
State | Published - 1990 |
Event | 17th International Conference on Quantum Electronics - IQEC '90 - Anaheim, CA, USA Duration: May 21 1990 → May 25 1990 |
Other
Other | 17th International Conference on Quantum Electronics - IQEC '90 |
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City | Anaheim, CA, USA |
Period | 5/21/90 → 5/25/90 |
All Science Journal Classification (ASJC) codes
- General Engineering