首页> 外文学位 >Controlling light-matter interactions and spatio-temporal properties of ultrashort laser pulses.
【24h】

Controlling light-matter interactions and spatio-temporal properties of ultrashort laser pulses.

机译:控制超短激光脉冲的光物质相互作用和时空特性。

获取原文
获取原文并翻译 | 示例

摘要

The SPECIFIC method a fast and accurate method for generating shaped femtosecond laser pulses. The femtosecond pulses are user specified from pulse parameters in the temporal domain. The measured spectral and recovered temporal phase and amplitudes from SEA TADPOLE are compared with the theoretical pulse profile from the user specified input. The SPECIFIC method has been shown to be a technique that can generate a diverse array of spectral/temporal phase and amplitude as well as polarization pulse shapes for numerous scientific applications.;The spatio-temporal-spectral properties of focusing femtosecond laser pulses are studied for several pulse shapes that are important for non-linear spectroscopic studies. We have shown with scanning SEA TADPOLE that the spatio-spectral phase of focusing double pulse profile changes across the laterally across the beam profile. The spectral features of the sinusoidal spectral phase shaped pulse has been shown to tilt at with a changing angle away from the focus of the lens.;Using spatio-spectral coupling, we have shown that multiple spatio-temporal foci can be generated along and perpendicular to the focusing direction of a femtosecond laser pulse. The spatial position of the spatio-temporal foci is controlled optically.;Using sinusoidal spectral phase modulated pulse trains fragment ion production from Benzonitrile parent molecule can be controlled. A spectral transmission window perturbed the temporal pulse amplitudes resulting in fragment ion production dependant on spectral window position. The spectral window ion production was shown to also be dependant on temporal phase sequence.
机译:SPECIFIC方法是一种快速,准确的方法,用于生成成形的飞秒激光脉冲。飞秒脉冲是用户根据时域中的脉冲参数指定的。将来自SEA TADPOLE的测得频谱和恢复的时间相位和幅度与用户指定输入的理论脉冲轮廓进行比较。 SPECIFIC方法已被证明是一种可以产生多种光谱/时间相位和幅度以及偏振脉冲形状的技术,可用于众多科学应用。;研究了聚焦飞秒激光脉冲的时空光谱特性对非线性光谱学研究很重要的几种脉冲形状。通过扫描SEA TADPOLE,我们发现聚焦双脉冲轮廓的时空光谱相位在整个光束轮廓的横向变化。正弦光谱相位整形脉冲的光谱特征已显示出以远离透镜焦点的变化角度倾斜。;使用时空-光谱耦合,我们已经显示出可以沿着和垂直产生多个时空震源飞秒激光脉冲的聚焦方向。时空焦点的空间位置是通过光学方式控制的。使用正弦频谱相位调制脉冲序列,可以控制苯甲腈母体分子产生碎片离子。光谱传输窗口会干扰时间脉冲幅度,导致碎片离子的产生取决于光谱窗口的位置。光谱窗口离子的产生也显示出与时间相序有关。

著录项

  • 作者

    Coughlan, Matthew A.;

  • 作者单位

    Temple University.;

  • 授予单位 Temple University.;
  • 学科 Chemistry Physical.;Physics Optics.
  • 学位 Ph.D.
  • 年度 2012
  • 页码 253 p.
  • 总页数 253
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号