1 Department of Physics, Shanghai Normal University, Shanghai200234, China
2 Key Laboratory for Astrophysics, Shanghai Normal University, Shanghai0034, China
从理论和实验上对极化材料4H-SiC一维光栅的光学特性进行了研究。发现该结构中存在四种光学模式：传播表面声子极化激元、偶极子天线、局域表面声子极化激元和准静态表面声子极化激元。进一步利用传播表面声子极化激元对于光栅结构参数的敏感性和原子层沉积技术生长介质材料，观察到了沉积材料厚度变化和传播表面声子极化激元的峰位偏移量呈现线性关系。该研究有助于新型微纳器件如纳米尺、传感器等的开发。
表面声子极化激元 纳米尺 4H-SiC 4H-SiC surface plasmon polaritons nano-ruler 
Author Affiliations
Abstract
Physics Department, State Key Laboratory of Surface Physics, Key Laboratory of Micro and Nano Photonic Structures (MOE), Collaborative Innovation Center of Advanced Microstructures (Nanjing), Fudan University, Shanghai 200433, China
In optical studies on layered structures, quantitative analysis of radiating interfaces is often challenging due to multiple interferences. We present here a general and analytical method for computing the radiation from two-dimensional polarization sheets in multilayer structures of arbitrary compositions. It is based on the standard characteristic matrix formalism of thin films, and incorporates boundary conditions of interfacial polarization sheets. We use the method to evaluate the second harmonic generation from a nonlinear thin film, and the sum-frequency generation from a water/oxide interface, showing that the signal of interest can be strongly enhanced with optimal structural parameters.
190.4400 Nonlinear optics, materials 260.3160 Interference 310.4165 Multilayer design Chinese Optics Letters
2017, 15(8): 081901
等离子体显示器(PDP)因其大尺寸、高响应速度等优点占据了较大的大屏幕高清晰度电视市场,但是对比度性能作为图像质量的关键技术指标仍有提高的余地.从结构、波形、算法等几个方面介绍了提高PDP对比度的常用技术,包括黑条结构、色彩滤波、改善驱动波形、分割低灰度子场、直方图均衡化等,并分析了它们的优缺点.
等离子体显示器 对比度增强
