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  • Received: Jun. 25, 2019

    Accepted: Aug. 22, 2019

    Posted: Nov. 27, 2019

    Published Online: Nov. 26, 2019

    The Author Email: Tingting Xi (ttxi@ucas.ac.cn), Zuoqiang Hao (zqhao@sdnu.edu.cn)

    DOI: 10.3788/COL201917.123201

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    Junwei Chang, Ruihan Zhu, Tingting Xi, Mengning Xu, Di Wang, Lanzhi Zhang, Dongwei Li, Zuoqiang Hao. Intensity modulation of filaments by shaped laser pulses in fused silica[J]. Chinese Optics Letters, 2019, 17(12): 123201

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Chinese Optics Letters, Vol. 17, Issue 12, 123201 (2019)

Intensity modulation of filaments by shaped laser pulses in fused silica

Junwei Chang1, Ruihan Zhu1, Tingting Xi2,*, Mengning Xu2, Di Wang1, Lanzhi Zhang3, Dongwei Li1,3, and Zuoqiang Hao1,3,**

Author Affiliations

  • 1School of Science, Changchun University of Science and Technology, Changchun 130022, China
  • 2School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China

Abstract

We show the intensity control of filamentation in fused silica by temporally shaping the femtosecond laser pulse. The arbitrary control of filamentation intensity has been obtained by the feedback control based on the genetic algorithm, and the peak intensity of filament has changed from about 670 to around 2100 (charge-coupled device counts). This modulation is in qualitative agreement with the simulation results. It is shown that the control of the intensity is realized by modulating the peak power of the shaped pulse.