4.8 Article

Holo-imprinting polarization optics with a reflective liquid crystal hologram template

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LIGHT-SCIENCE & APPLICATIONS
卷 11, 期 1, 页码 -

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SPRINGERNATURE
DOI: 10.1038/s41377-022-00746-3

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  1. Goertek Electronics

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This article proposes a new method for manufacturing liquid crystal polarization optics based on holographic imprinting. By replicating the polarization patterns of reflective liquid crystal holograms, high-quality polarization patterns can be generated. This method has widespread impact on the fabrication of liquid crystal polarization optics for advanced display and imaging systems.
Liquid crystal polarization optics based on photoalignment technique has found pervasive applications in next-generation display platforms like virtual reality and augmented reality. Its large-scale fabrication, however, remains a big challenge due to the high demands in small feature size, fast processing speed, and defects-free alignment quality during the photoalignment process, especially for large-angle reflective devices. Here we propose a new concept of holo-imprinting based on non-contact replication of polarization pattern with a reflective liquid crystal hologram as a template. Our theoretical analysis and experimental results validate the possibility of generating a high-quality polarization pattern exploiting the self-interfering beams of reflective holograms. The method can be extended to numerous devices, from transmissive to reflective, from small angle to large angle, and from grating, lens, to freeform optics. Its widespread impact on the fabrication of liquid crystal polarization optics for advanced display and imaging systems is foreseeable.

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