8 January 2008 Spatial light modulator based on sheared polymer network liquid crystal
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A kind of spatial light modulator using sheared polymer network liquid crystal (SPNLC) is presented. The SPNLC shows a fast response and weak thickness dependency. The SPNLC cell is fabricated by exposing the mixture of E7 liquid crystal and monomer NOA65 under ultraviolet light. A sheared force is applied to the cell to align the liquid crystal domains, decreasing response time and reducing light scattering. A SPNLC sample of d=13μm with about 3ms response time was measured at λ=632.8nm. For another sample of d=20μm reflective infrared spatial light modulator using SPNLC, when the black body of readout radiation was 600°C, response time with about 8ms at λ=10.6μm and the maximum difference in temperature with more than 80°C at 8~14μm were measured.
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Yanling Luo, Yanling Luo, Jiaobo Gao, Jiaobo Gao, } "Spatial light modulator based on sheared polymer network liquid crystal", Proc. SPIE 6835, Infrared Materials, Devices, and Applications, 68350C (8 January 2008); doi: 10.1117/12.756467; https://doi.org/10.1117/12.756467

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