中国物理B ›› 2013, Vol. 22 ›› Issue (10): 103301-103301.doi: 10.1088/1674-1056/22/10/103301

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Control of the photoionization/photodissociation processes of cyclopentanone with trains of femtosecond laser pulses

宋耀东, 陈洲, 杨雪, 孙长凯, 张丛丛, 胡湛   

  1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130021, China
  • 收稿日期:2013-02-03 修回日期:2013-04-03 出版日期:2013-08-30 发布日期:2013-08-30
  • 基金资助:
    Project supported by the National Basic Research Program of China (973 Program) (Grant No. 2013CB922200), the National Natural Science Foundation of China, (Grant Nos. 10774056 and 10974070), the Fundamental Research Funds for the Central Universities, China (Grant No. 200903371), and the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20100061110045).

Control of the photoionization/photodissociation processes of cyclopentanone with trains of femtosecond laser pulses

Song Yao-Dong (宋耀东), Chen Zhou (陈洲), Yang Xue (杨雪), Sun Chang-Kai (孙长凯), Zhang Cong-Cong (张丛丛), Hu Zhan (胡湛)   

  1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130021, China
  • Received:2013-02-03 Revised:2013-04-03 Online:2013-08-30 Published:2013-08-30
  • Contact: Hu Zhan E-mail:huzhan@jlu.edu.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (973 Program) (Grant No. 2013CB922200), the National Natural Science Foundation of China, (Grant Nos. 10774056 and 10974070), the Fundamental Research Funds for the Central Universities, China (Grant No. 200903371), and the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20100061110045).

摘要: A train of three equally spaced femtosecond laser pulses is employed to control the photoionization/photodissociation processes of cyclopentanone. With the increase of pulse separation, a strong modulation of product ion yield is observed. More than ten-fold changes of ion yield ratio between different products can be realized. The experimental observations further explain the compositions and formation pathways of peaks in the mass spectra. The controlling mechanisms are also discussed.

关键词: shaped femtosecond pulse, coherent control, time-of-flight mass spectra, photoionization and photodissociation

Abstract: A train of three equally spaced femtosecond laser pulses is employed to control the photoionization/photodissociation processes of cyclopentanone. With the increase of pulse separation, a strong modulation of product ion yield is observed. More than ten-fold changes of ion yield ratio between different products can be realized. The experimental observations further explain the compositions and formation pathways of peaks in the mass spectra. The controlling mechanisms are also discussed.

Key words: shaped femtosecond pulse, coherent control, time-of-flight mass spectra, photoionization and photodissociation

中图分类号: 

  • 33.80.R