Abstract
A novel method is proposed to measure the phase modulation properties of twist nematic liquid crystal spatial light modulator (TN-LCSLM). The wavefront modulated by the TN-LCSLM was dealt by lateral shearing interferometry, and the interferogram was got ten by CCD. The minmum-energy algorithm was used to get the phase distribution of the wavefront, and the phase modulation curves of TN-LCSLM was obtained. It is a good method for being less sensitive to vibrations and air turbulence. Further more, the three dimensional description of the phase modulation range of TN-LCSLM with different orientations of the input and output polarizers was measured. It makes references for optimizes the TN-LCSLM.
| Original language | English |
|---|---|
| Pages (from-to) | 899-904 |
| Number of pages | 6 |
| Journal | Guangzi Xuebao/Acta Photonica Sinica |
| Volume | 36 |
| Issue number | 5 |
| State | Published - May 2007 |
| Externally published | Yes |
Keywords
- Diffraction optics
- Lateral shearing interferometry
- The phase modulation properties
- The phase modulation range
- Twist Nematic Liquid Crystal Spatial Light Modulator (TN-LCSLM)
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