High Speed and High Contrast Spatial Light Modulator Using Uniaxial Strain

使用单轴应变的高速高对比度空间光调制器

• 批准号: 9216669
• 负责人: Yicheng Lu
• 金额: $ 7.5万
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1995-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9216669&HistoricalAwards=false
• 关键词: Speed; Contrast; Spatial; Light; Modulator

An investigation for, and subsequent design of a high speed, high contrast, semiconductor spatial light modulator (SLM) is proposed. The SLM uses polarization rotation in a MQW under built-in uniaxial stress. The ordinarily strained MQWs are pattern with stripe forms to induce an anisotropy in the absorption. The MQW structures then are sandwiched between two linear polarizers similar to liquid crystal SLMs. the "on" and "off" states are controlled with an applied voltage. The contrast ratio, which is determined by the quality of the polarizers, can reach as high as 1000: 1; which the modulation speed, which is determined by electro-absorption in the heterostructures, can reach the picosecond range. The proposal represents a two-year collaboration between the Department of Electrical and Computer Engineering at Rutgers University and the Electronics Technology and Devices Laboratory (ETDL) at Fort Monmouth. The work at Rutgers will focus on processing development, structural characterization, and theoretical modeling. In addition, a graduate student from Rutgers will spend and majority of her time at ETDL, performing the optical studies for this project. The National Science Foundation's support will greatly enhance our joint efforts in this area.

一项调查，以及随后的设计 一种高速高对比度半导体 提出了一种空间光调制器（SLM）。 SLM使用偏振旋转， 内置单轴应力下的MQW。 的 通常应变的多量子阱图案化为 条纹形成，以在 吸收 MQW结构是 夹在两个线性偏振器之间 类似于液晶SLM。 “开”和 “关闭”状态由应用的 电压. 对比度， 由偏振器的质量决定， 可以达到1000：1， 调制速度，由下式确定： 异质结构中的电吸收可以 达到皮秒范围。 该提案是一项为期两年的 与联合国秘书长的合作 电子与计算机工程 罗格斯大学和电子学 技术与器件实验室（ETDL） 在蒙茅斯堡 罗格斯大学的工作将 专注于加工开发，结构 表征和理论建模。 在 此外，罗格斯大学的一名研究生将 她大部分时间都呆在ETDL， 为这个项目进行光学研究。 国家科学基金会的支持 将大大加强我们在这方面的共同努力， 区