Abstract
The paper briefly reviews the principles of electronic recording and reconstruction of an optical hologram, and then gives a design of an experimental setup to record the optical hologram of 3D field directly on the small photosensitive chips of a CCD (charge coupled device) array, thus obtaining a series of layered reconstructions of a 3D field. Based on this, some effective ways for completely separating and intercepting the spatial spectrum of an object are discussed, and a new way for improving the bandwidth of the spatial spectrum of a holographic reconstruction by double reference beams is proposed. It is indicated that digital holography and the improved method can be effective for measuring the dynamic changes of a 3D field in real time.
| Original language | English |
|---|---|
| Pages (from-to) | 519-523 |
| Number of pages | 5 |
| Journal | Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University |
| Volume | 20 |
| Issue number | 4 |
| State | Published - Nov 2002 |
Keywords
- 3D (three dimensional) field
- CCD (charge coupled device)
- Digital holography
- Fourier transform
- Spatial spectrum
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