Abstract
AbstractA new switchable holographic device concept using reversible electrodeposition (RED) technology is proposed. The proposed device has a structure in which the cavity structure is changed by the reversible deposition of Ag, and thus the characteristics of the reflected light are modulated. It has a high reflectance due to a mirror reflection structure and exhibits phase modulation by the reversible deposition of Ag. Because the proposed device is a current‐driven device, it is expected to overcome the limitation in the scaling down of the pitch in spatial light modulators, which is considered a limitation of liquid crystal device. A passive type switchable holographic device with a 1 µm pitch is implemented using the proposed device. The successful implementation of a switchable holographic image using the fabricated device is confirmed. The proposed device is expected to be applicable as an active metasurface and spatial light modulator device in the visible light region in the future because it has a large modulation in the visible light region.
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