Light‐Addressable Polychromatic Holographic Display via Multi‐Encoded Chiral Superstructures

Abstract All‐optical modulation has aroused great interest with the fast development of the Photonics Information Age. However, traditional light‐light interaction usually needs strong pumping power to accumulate sufficiently large nonlinear modulation and is restricted to a single working wavelength. Here, the light‐addressable polychromatic holographic display is proposed via multi‐encoded chiral superstructures. The shape and the color of the holographic images are encoded in the photo‐active cholesteric liquid crystal (CLC) superstructures and then can be reproduced on demand. The multi‐encoded CLC superstructures can be modulated by light and on the contrary, have the ability to modulate light, serving as a promising medium that incorporates integrated functions for the storage, addressing and readout of light. Five polychromatic holographic displays are vividly demonstrated, verifying the multi‐wavelength processing ability. This work provides a practical option for compact, broadband and addressable all‐optical modulation, promoting various applications of optical communication, sensing, and computing.