Abstract
The generation of helical beams with different pre-determined orbital angular momentum states based on computer-generated holograms is studied. The phase-type diffraction gratings are designed by using the Gerchberg-Saxton iterative method, and realized by using the spatial light modulator (SLM). In the experiments diffraction fields with different helical beams distribution are obtained by using the gratings. The theoretical simulation agrees with the experimental results. This method is meaningful for the information transmission based on the orbital angular momentum.
| Original language | English |
|---|---|
| Pages (from-to) | 264-270 |
| Number of pages | 7 |
| Journal | Wuli Xuebao/Acta Physica Sinica |
| Volume | 59 |
| Issue number | 1 |
| Publication status | Published - Jan 2010 |
Keywords
- Computer-generated hologram
- Gerchberg-Saxton algorithm
- Helical beams
- Orbital angular momentum
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