A spatial light modulator (SLM) is a device that can control the,, or of in a spatially varying manner. A simple example is an. Usually when the term SLM is used, it means that the transparency can be controlled by a. SLMs are primarily marketed for, displays devices, and. SLMs are also used in and.
It also covers a wavelength range of 400 to 1650 nm and supports applications that are phase-only modulation up to amplitude modulation The high reflectivity of the SLM ensures efficient use of light and optimal results. These spatial light modulators provide far more pixels than lower-order phase modulators such as segmented or deformable mirrors. A simple example is an overhead projector transparency. SLMs. SIMTRUM's spatial light modulator can change the amplitude, phase and polarization state of the light distribution in space under the control of the driving signal that changes with time, or convert the incoherent light into coherent light, which can easily write specific information into the light. Current wavefront shaping technologies face a fundamental dichotomy: spatial light modulators (SLMs) offer high pixel count but suffer from low refresh rates, while acousto-optic deflectors (AODs) provide moderate speed with restricted optical beam geome-tries [25, 26].
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