Optically controlled wide-range beam steering and spectrum scanning are demonstrated by a self-organized liquid crystal grating. The diffraction angle can be tuned around 30° upon light irradiation. In addition, a reversible spectrum scanning system can be constructed using the optical tunable grating. This highly tunable light-driven grating has great potential in light propagation control and spectroscopy applications.
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Jau et al. (2014) studied this question.
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