Optical surface and defect states in light-induced photonic structures

光诱导光子结构中的光学表面和缺陷态

• 批准号: 0800972
• 负责人: Zhigang Chen
• 金额: --
• 依托单位: San Francisco State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-07-01 至 2011-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0800972&HistoricalAwards=false
• 关键词: Optical; surface; defect; states; light

Surface and defect states exist in a variety of systems that obey linear and nonlinear equations. In this RUI research project, new concepts and fundamental issues of wave propagation along surfaces and defects will be explored both experimentally and theoretically. The specific areas of investigation will include defect modes, defect-soliton interactions, nonlinear surface solitons, and Tamm- and Shockley-like surface states in biperiodic superlattice structures. Recently it has been suggested that the small refractive index variation induced as periodic arrays of evanescently coupled waveguides can be used for excitation of surface and defect states, but experimental demonstration in a two-dimensional configuration has been hampered by fabrication of such periodic structures with desired surfaces and defects. This project will be carried out in an optical setting of reconfigurable periodic structure using optically-induced photonic waveguide structures. The research will have direct impact on other areas of sciences, ranging from solid state physics to photonic crystals, and from hydrodynamics to atomic physics such as Bose-Einstein condensates trapped in periodic potentials. A major emphasis of this project is placed on mentoring undergraduate students, particularly those from the ethnically diverse San Francisco Bay Area population. A strong educational component of this work is that the research project will be used as a form of teaching as well as discovery, and the students will be actively involved in learning research methods and in sharing discoveries and interpretations. Thus, the broader impacts of this project lie in the integration of research and education through training of students in a fundamentally and technologically important area.

表面态和缺陷态存在于服从线性和非线性方程的各种系统中。在这个RUI研究项目中，波沿沿着表面和缺陷传播的新概念和基本问题将在实验和理论上进行探索。 具体的研究领域将包括缺陷模式，缺陷孤子相互作用，非线性表面孤子，和塔姆和肖克利双周期超晶格结构的表面状态。 最近有人建议，小的折射率变化引起的周期性阵列的倏逝耦合波导可以用于激发表面和缺陷态，但在一个二维配置的实验演示已被阻碍制造这样的周期性结构所需的表面和缺陷。本计画将利用光诱导光子波导结构，在可重构周期性结构的光学装置中进行。这项研究将对其他科学领域产生直接影响，从固态物理到光子晶体，从流体力学到原子物理，如被困在周期性势中的玻色-爱因斯坦凝聚体。该项目的一个主要重点是指导本科生，特别是那些来自种族多样化的旧金山弗朗西斯科湾区人口。这项工作的一个强有力的教育组成部分是，研究项目将被用作教学和发现的一种形式，学生将积极参与学习研究方法，并分享发现和解释。因此，该项目的更广泛影响在于通过在一个重要的基础和技术领域培训学生，将研究和教育结合起来。