Intensity modulation of filaments by shaped laser pulses in fused silica

Junwei Chang; Ruihan Zhu; Tingting Xi; Mengning Xu; Di Wang; Lanzhi Zhang; Dongwei Li; Zuoqiang Hao

doi:10.3788/COL201917.123201

Journals >Chinese Optics Letters >Volume 17 >Issue 12 >Page 123201 > Article

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 Xi^2、*, Mengning Xu², Di Wang¹, Lanzhi Zhang³, Dongwei Li^1、3, and Zuoqiang Hao^1、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

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DOI: 10.3788/COL201917.123201 Cite this Article Set citation alerts

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 Copy Citation Text

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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.