研究目的

Investigating the features of photochromic materials, particularly diarylethenes, for their use in holography, including modulation of transparency and refractive index, and strategies for writing binary and grayscale holograms.

研究成果

Photochromic materials, particularly diarylethenes, offer promising opportunities for the development of rewritable computer-generated holograms (CGHs). The study demonstrates the optimization of both the photochromic material and the writing procedure is necessary for high-quality holograms. The computational tool developed predicts the performance of photochromic films in terms of transparency contrast, and the study provides guidelines for maximizing the efficiency of phase holograms through refractive index modulation.

研究不足

The maximum useful thickness of photochromic materials is limited by UV penetration, which determines the degree of conversion through the film thickness. The study also highlights the need for careful selection of photochromic dyes to achieve adequate contrast in amplitude holograms.