Novel Polymeric Photorefractive Material for Optical Data Processing

用于光学数据处理的新型聚合物光折变材料

• 批准号: 9361272
• 负责人: Lian Li
• 金额: $ 6.48万
• 依托单位: Molecular Technologies Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-02-01 至 1994-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9361272&HistoricalAwards=false
• 关键词: Novel; Polymeric; Photorefractive; Material; Optical

9361272 Lian Real Time thin film holographic elements are crucial components in a number of optical data processing technologies. There is a need for development of materials to record both permanent and re configurable holograms. Recently, polymeric photo refractive materials have evoked a lot of interest as inexpensive holographic media. We propose to develop a new class of polymeric photo refractive materials which are expected to surpass the polymeric photo refractive materials so far reported both in speed and sensitivity. The polymeric materials proposed in this work are conjugated polymers which have characteristics of a semiconductor. These polymers are functionalized with second order nonlinear optical chromophores and cross linking groups to provide stable second order nonlinerity after poling and cross linking. Charge transport and dielectric constant can be tailored by appropriate choice of dopants. The photo refractive polymer synthesized will be purified and processed into thin films. These materials will be characterized for their linear and nonlinear optical properties and photo conductivity. Diffraction efficiency measurements will be performed to evaluate these materials as a dynamic holographic medium.

9361272 Lian 实时薄膜全息元件是许多光学数据处理技术的关键组件。 需要开发记录永久和可重构全息图的材料。 最近，聚合物光折射材料作为廉价的全息介质引起了人们的广泛兴趣。 我们建议开发一类新型聚合物光折射材料，有望在速度和灵敏度方面超越迄今为止报道的聚合物光折射材料。 这项工作中提出的聚合物材料是具有半导体特性的共轭聚合物。 这些聚合物用二阶非线性光学发色团和交联基团进行官能化，以在极化和交联后提供稳定的二阶非线性。 电荷传输和介电常数可以通过适当选择掺杂剂来定制。 合成的光折射聚合物将被纯化并加工成薄膜。 这些材料的特征在于其线性和非线性光学特性以及光导率。 将进行衍射效率测量以评估这些材料作为动态全息介质的效果。