Abstract
We report some quantitative studies of four-wave mixing in aligned nematic-liquid-crystal films. Using an unfocused cw laser of 200 mW power, at an estimated intensity of 5 W/cm2, we have observed a conversion efficiency of 10-2. The third-order nonlinear polarization that is responsible for this wave-mixing process is attributed to the optically induced molecular reorientation. A quantitative calculation of the wave-mixing efficiency and the intensity dependence is presented. It is shown that the experimental results are in good agreement with the theoretical predictions.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2077-2081 |
| Number of pages | 5 |
| Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
| Volume | 23 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jan 1 1981 |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
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