Femtosecond Pulse Studies on Poled Nonlinear Polymeric Films

极化非线性聚合物薄膜的飞秒脉冲研究

• 批准号: 9122168
• 负责人: Andre Knoesen
• 金额: $ 32.25万
• 依托单位: University of California-Davis
• 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: 1992-09-15 至 1996-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9122168&HistoricalAwards=false
• 关键词: Femtosecond; Pulse; Studies; Poled; Nonlinear

Poled polymeric thin films are uniquely suited for second-order nonlinear optical applications of ultrashort pulses (50 fs) since minimal pulse spreading occurs. This group has already shown that corona- poled nonlinear polymeric films are particularly attractive for nonlinear ultrashort pulse applications. The PI proposes various sum and difference frequency experiments with these thin nonlinear polymeric films. Sum and difference frequency nonlinear interactions will be used to generate ultrashort UV pulses, resulting in the shortest UV pulses to date, as well as in synchronized UV and infrared pulses. Additionally, the PI proposes ultrashort UV pulse shape measurements with a resolution approaching ten femtoseconds. The possibility of anomalous pulse matching in the nonlinear polymeric films will be investigated. Terahertz beam generation by optical rectification is also proposed. Some of the proposed experiments will be carried out in cooperation with Dr. C.V. Shank>s laboratory at Lawrence Berkeley Laboratory.

极化聚合物薄膜特别适合于超短脉冲（50秒）的二阶非线性光学应用，因为脉冲扩散极小。这个小组已经证明了电晕极化非线性聚合物薄膜在非线性超短脉冲应用中特别有吸引力。PI提出了各种非线性聚合物薄膜的和频和差频实验。和频和差频非线性相互作用将用于产生超短紫外脉冲，从而产生迄今为止最短的紫外脉冲，以及同步的紫外和红外脉冲。此外，PI还提出了分辨率接近10飞秒的超短紫外脉冲形状测量。研究了非线性聚合物薄膜中异常脉冲匹配的可能性。提出了利用光整流产生太赫兹光束的方法。一些拟议的实验将与劳伦斯伯克利实验室C.V. Shank b>博士的实验室合作进行。