The birefringence of the liquid crystal material introduces a phase delay, allowing the FLCoS to be employed as a Spatial Light Modulator (SLM), operating as a high speed binary (0 or π ) phase modulator of coherent light from a laser. Using the QXGA-R11, diffraction into the 1st order can be modulated up to 4.5 kHz by fully reconfigurable high resolution grating patterns.
The diffraction efficiency into the first order at room temperature is wavelength-dependent:
10% at 544 nm and 8% at 455 nm.
It’s doubled if positive and negative first order can be used.
For creating transmission functions ForthDD recommends the starter kit from LightTrans. www.lighttrans.com