| 초록 |
Photopolymers are attractive as a promising recording material for the holographic optical data storage due to their relatively large refractive index modulation, high energetic sensitivity, and low cost. In spite of these merits, photopolymers have still a fundamental problem that the original image is distorted by volume shrinkage. To overcome this problem, intensive research has been done including cationic ring opening polymerization system (CROP), organic-inorganic hybrid system, and crosslinked matrix system. However, these approaches accompany critical demerits including complex synthesis procedures in the CROP system, severe light scattering in the nanoparticle-dispersed photopolymers and limitation in holographic performance due to high crosslinking density in the crosslinked matrix system. In connection with these, we report the photopolymer systems of enhanced energetic sensitivity without sacrificing both diffraction efficiency and dimensional stability on volume shrinkage. |
