PVA/AA/SeO2 광고분자 필름의 두께 및 Eosin Y 함량 변화에 따른 회절효율 향상에 관한 연구
Diffraction Efficiency Improvement of PVA/AA/SeO2 Photopolymer with Various Film Thickness and Eosin Y Contents
0
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
광고분자 필름은 홀로그램을 저장하기 위한 기술로서, 광굴절 결정보다 고감도, 간단한 실시간 처리, 저렴한 가격 등의 장점으 로 홀로그래픽 저장기술 응용에 보다 손쉽게 적용할 수 있다. 본 연구에서는 기존의 PVA/AA계 광고분자 필름에 광학적 활성을 가지는 SeO2를 첨가한 광고분자 필름을 제조하였다. 홀로그램을 저장하기 위한 기록매질로서 최적의 회절효율을 가지는 광고분 자 필름을 만들기 위하여, 광감각제인 Eosin Y의 농도와 광고분자 필름의 두께를 달리하여 실험하였다. 광고분자 필름의 회절효 율은 532 nm 레이저로, 40°의 입사각에서 측정하였다. 실험 결과, Eosin Y의 농도가 0.0045 g이고, 필름 두께가 297 μm일 때, 78.70%로 가장 높은 회절효율 값을 나타내었다.
Abstract
Photopolymer is evaluated as better material than the others used for hologram storage, due to many advantages, such as high diffraction efficiency, easy processing, and self-developing. In this study, chalcogenide inorganic compound (SeO2) which has optical activity, was added to polyvinyl alcohol/acrylamide photopolymer films. In order to optimize diffraction efficiency of these photopolymer films, we prepared the photopolymer films with various film thicknesses and Eosin Y content. Diffraction efficiency of the photopolymer films were measured using a 532 nm laser at 40° incident angle. As a result, the phtopolymer film with Eosin Y content of 0.0045 g and thickness of 297 μm showed the highest diffraction efficiency (78.70%).
참고문헌 (11)
- J. T. Sheridan, "Photopolymer holographic materials : the non-local diffusion model", OSA Trends in Optics and Photonics, 87, pp.206~212 (2003)
- U. S. Rhee, "Characteristics of the DuPont photopolymer forangularly multiplexed page-oriented holographic memories", Opt. Eng., 32, pp.1839~1847 (1993)
- 김대흠, "Effect of Modification of SeO2", Acrylamide Ratios on Diffraction Efficiencies in PVA, Journal of Optical Society of Korea, pp.2007, 11(4)[DOI]
- Daeheum Kim, "Effects of Modifying PVA", AA Photopolymer Film with SeO2 Crystals on Diffraction Efficiencies for Holographic Recording, 2006, pp.12(5), 762~768[DOI]
- C. Neippa, "Characterization of a PVA", acrylamide photopolymer. Influence of a cross-linking monomer in the final characteristics of the hologram, 2003, pp.224, 27~34
- K. Curtis, "Recording of multiple holograms on photopolymer film", Appl. Opt., 31, pp.7425~7428 (1992)
- S. Blaya, "Optimization of an acrylamide-based dry film used for holographic recording", Appl. Opt., 37, pp.7604~7610 (1998)
- A. Pu, "Exposure schedule for multiplexing holograms in photopolymer films", Opt. Eng., 35, pp.2824~2829 (1996)
- C. Garcia, "Hologram recording in polyvinylalcohol", acrylamide photopolymers by means of pulsed laser exposure, 2002, pp.41, 2613~2620
- Daeheum Kim, "Diffraction efficiency change in PVA", AA photopolymer films by photosensitive inorganic compound addition, 2008, pp.25(4), 874~880[DOI]
- D. H. Choi, "Fast response of the diffraction efficiency in photopolymer prepared by sol–gel process", Opt. Mat., 27, pp.85~89 (2004)