Abstract
Based on the theory of recording lensless Fourier transform holograms and the structure of CCD, the numerical reconstruction of the under-sampled lensless Fourier transform holograms are studied with Fourier spectrum. An important conclusion is achieved: when the Shannon sampling condition is not fulfilled in recording the holograms, a objective with limited size can be still reconstructed. At the same time, the changed characteristics of the reconstructed images are analyzed. Experimental results show a good agreement with theoretical analysis.
| Original language | English |
|---|---|
| Pages (from-to) | 1824-1828 |
| Number of pages | 5 |
| Journal | Guangzi Xuebao/Acta Photonica Sinica |
| Volume | 36 |
| Issue number | 10 |
| State | Published - Oct 2007 |
Keywords
- CCD
- Lensless Fourier transform holograms
- Spectrum analysis