Liquid crystals are birefringent, so applying a voltage to the cell changes the effective refractive index seen by the incident wave, and thus the phase retardation of the reflected wave. OverviewA spatial light modulator (SLM) is a device that can control the,, or of in a spatially varying. (MIIPS) is a technique based on the computer-controlled phase scan of a linear-array spatial light modulator.
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Depending on the parameter of a light beam which is manipulated, modulators may be categorized into amplitude modulators, phase modulators, polarization modulators, etc.
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The first performs the necessary amplitude modulation, also introducing a phase change. In a spatial light modulator with "soft landing" electrodes, there is the possibility that deflectors will be attached to the landing electrodes. Our SLMs consist of liquid crystal (LC) pixels, each independently addressed, acting as separate variable retarders. The SPIE Digital Library offers a comprehensive collection of research articles, conference papers, and technical documents focused on spatial light modulators (SLMs), reflecting the breadth and depth of this rapidly evolving technology. For this tech-talk, I'll focus on a specific subset: those that achieve this using a pixelated, two-dimensional array.
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HOLOEYE currently provides two versions of the HES 7020-1 6001 amplitude Spatial Light Modulator. One SLM version is optimized for the visible range and one version for the near IR range up to 1100 nm. The devices have a comparable design to our phase SLM devices and can conveniently integrated in laboratory setups. HOLOEYE´s Spatial Light Modulator systems are based on translucent (LCD) or reflective (LCOS) liquid crystal microdisplays.
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A spatial light modulator (SLM) is a device that can control the intensity, phase, or polarization of light in a spatially varying manner. SLMs are primarily marketed for image projection, displays devices, and maskless lithography. (MIIPS) is a technique based on the computer-controlled phase scan of a linear-array spatial light modulator.
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