Abstract
Lau effect is a self-imaging formed in the far field of a pair of gratings illuminated by spatially incoherent light. We report the experimental demonstration of the second-order Lau effect with incoherently pseudo-thermal light. Spatially periodic structures were nonlocally superposed giving rise to interference patterns in intensity correlation measurement. The experimental results are in agreement with the theoretical analysis. The second-order Lau effect can be well understood by the unfolded version of the experimental setup where the bucket detection can be thought as the incoherent illumination in classical Lau effect.
| Original language | English |
|---|---|
| Pages (from-to) | 298-301 |
| Number of pages | 4 |
| Journal | Optics Communications |
| Volume | 309 |
| DOIs | |
| Publication status | Published - 2013 |
| Externally published | Yes |
Keywords
- Intensity correlation measurement
- Lau effect
- Pseudo-thermal light
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