Their goal is to determine the effects of axicons on the Fourier distribution of random binary data spectrum of a spatial light modulator ( SLM ).
12.
A spatial light modulator operates in a similar way to the diffraction grating, but can be controlled by computer to dynamically generate a wide range of OAM states.
13.
On the other hand, K . Ladavac " et al . " used a spatial light modulator to project an intensity pattern to enable the optical sorting process.
14.
Practically, the lattice of interfering Bessel beams is engineered by a spatial light modulator ( SLM ), a liquid-crystal device whose individual pixels can be switched on and off in order to display a binary pattern.
15.
Patterns are usually generated by passing light through a digital spatial light modulator, typically based on one of the three currently most widespread digital projection technologies, transmissive liquid crystal, reflective liquid crystal on silicon ( LCOS ) or digital light processing ( DLP; moving micro mirror ) modulators, which have various comparative advantages and disadvantages for this application.
16.
The illustrations to the right show both the OFF and the ON-state of a single picture element ( " pixel " ) of a twisted nematic light modulator liquid crystal display operating in the " normally white " mode, i . e ., a mode in which light is transmitted when no electrical field is applied to the liquid crystal.
