Angular distributions of CH3I fragment ions under the irradiation of a single pulse and trains of ultrashort laser pulses

作者：Song Yao Dong; Chen Zhou; Sun Chang Kai; Hu Zhan^*

来源：Chinese Physics B, 2013, 22(1): 013302.

DOI：10.1088/1674-1056/22/1/013302

• shaped femtosecond pulse
• molecular alignment
• angular distribution

The angular distribution of CH3I is investigated experimentally using a single Fourier transform-limited laser pulse and a pulse train, where a 90-fs 800-nm linearly polarized laser field with a moderate intensity of 2.8 x 10(13) W/cm(2) is used. The dynamic alignment is demonstrated in a single pulse experiment. Moreover, a pulse train is used to optimize the molecular alignment, and the alignment degree is almost identical to that with the single pulse. The results are analysed by using chirped femtosecond laser pulses, and it demonstrates that the structure of pulse train rather than its effective duration is crucial to the molecular alignment.

• 出版日期2013-1
• 单位吉林大学