Abstract
The spontaneous appearance of hexagon patterns in photorefractive crystals is treated as mirrorless coherent four-wave mixing oscillation. It is shown experimentally that the system has a well-defined coupling-strength threshold and behaves as other coherent optical oscillators near the threshold. A simple relation for the angle of the hexagon sideband as a function of the distance between the end mirror and the sample is derived and verified experimentally.
| Original language | English |
|---|---|
| Pages (from-to) | 2065-2069 |
| Number of pages | 5 |
| Journal | Journal of the Optical Society of America B: Optical Physics |
| Volume | 15 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 1998 Jul |
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics