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Chinese Optics Letters, Volume. 15, Issue 8, 081902(2017)

Influence of laser contrast on high-order harmonic generation from solid-density plasma surfaces On the Cover

Jian Gao1,2, Feng Liu1,2、*, Xulei Ge1,2,3, Yanqing Deng1,2,4, Guobo Zhang1,2,4, Yuan Fang1,2, Wenqing Wei1,2, Su Yang1,2, Xiaohui Yuan1,2, Min Chen1,2, Zhengming Sheng1,2,5, and Jie Zhang1,2
Author Affiliations
  • 1Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
  • 2Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China
  • 3State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China
  • 4College of Science, National University of Defense Technology, Changsha 410073, China
  • 5SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, UK
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    Top panel is the experimental setup for HOHG. The bottom panel is the raw image of the harmonic spectrum obtained from the glass target with a PM.

    Fig. 1. Top panel is the experimental setup for HOHG. The bottom panel is the raw image of the harmonic spectrum obtained from the glass target with a PM.

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    (a) Schematic of the PM system. (b) The picosecond ASE contrast ratios measured without (black) and with (red) the PM.

    Fig. 2. (a) Schematic of the PM system. (b) The picosecond ASE contrast ratios measured without (black) and with (red) the PM.

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    The raw spectral image (top panel) and spectrum of high-order harmonics (bottom panel) obtained (a) with and (b) without the PM in the specular direction of the incident laser.

    Fig. 3. The raw spectral image (top panel) and spectrum of high-order harmonics (bottom panel) obtained (a) with and (b) without the PM in the specular direction of the incident laser.

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    (Color online) (a) Dependence of 18th harmonic intensities on the plasma scale lengths L obtained in the experiment (red). The blue line indicates the intensity of the background plasma emission. The harmonic spectra obtained by PIC simulations with different plasma scale lengths (b) L=0.001λ (black), (c) L=0.1λ (green), and (d) L=0.8λ (brown).

    Fig. 4. (Color online) (a) Dependence of 18th harmonic intensities on the plasma scale lengths L obtained in the experiment (red). The blue line indicates the intensity of the background plasma emission. The harmonic spectra obtained by PIC simulations with different plasma scale lengths (b) L=0.001λ (black), (c) L=0.1λ (green), and (d) L=0.8λ (brown).

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    Jian Gao, Feng Liu, Xulei Ge, Yanqing Deng, Guobo Zhang, Yuan Fang, Wenqing Wei, Su Yang, Xiaohui Yuan, Min Chen, Zhengming Sheng, Jie Zhang. Influence of laser contrast on high-order harmonic generation from solid-density plasma surfaces[J]. Chinese Optics Letters, 2017, 15(8): 081902

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    Paper Information

    Category: Nonlinear Optics

    Received: Dec. 22, 2016

    Accepted: Apr. 28, 2017

    Published Online: Jul. 20, 2018

    The Author Email: Feng Liu (liuf001@sjtu.edu.cn)

    DOI:10.3788/COL201715.081902

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology