Optical properties of a photopolymer with large refractive index modulation for holographic application

Chang-Won Shin; Nam Kim; Won-Sun Kim; Yong-Cheol Jeong; Jung-Ki Park

doi:10.1117/12.559329

22 October 2004 Optical properties of a photopolymer with large refractive index modulation for holographic application

Chang-Won Shin, Nam Kim, Won-Sun Kim, Yong-Cheol Jeong, Jung-Ki Park

Proceedings Volume 5560, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications X; (2004) https://doi.org/10.1117/12.559329
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

Optical transparency and high diffraction efficiency are two essential factors for high performance of the photopolymer. Optical transparency mainly depends on the miscibility between polymer binder and photopolymerized polymer, while diffraction efficiency depends on the refractive index modulation between polymer binder and photopolymerized polymer. For most of organic materials, the large refractive index difference between two polymers accompanies large structural difference that leads to the poor miscibility and thus poor optical quality via light scattering. Therefore, it is difficult to design a high-performance photopolymer satisfying both requirements. In this work, we prepared a new phase-stable photopolymer with large refractive index modulation and investigated the optical properties. Our photopolymer is based on modified poly (methyl methacrylate) as a polymer binder, acryl amide as a photopolymerizable monomer, triethanolamine as initiator, and yellow eosin as a photosensitizer at 532nm. Diffraction efficiency over 85% and optical transmittance over 90% were obtained for the photopolymer.

Citation Download Citation

Chang-Won Shin, Nam Kim, Won-Sun Kim, Yong-Cheol Jeong, and Jung-Ki Park "Optical properties of a photopolymer with large refractive index modulation for holographic application", Proc. SPIE 5560, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications X, (22 October 2004); https://doi.org/10.1117/12.559329

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