Double optimal density gradients for harmonic generation from relativistically oscillating plasma surfaces

Jian Gao, Boyuan Li, Feng Liu, Huaipeng Cai, Min Chen, Xiaohui Yuan, Xulei Ge, Liming Chen, Zhengming Sheng, Jie Zhang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The influence of plasma density gradients on the harmonic generation process from relativistically oscillating mirror (ROM) is studied experimentally. It is observed that the harmonic intensities from orders of 21 st to 24 th first drop and then reach the maximum value with the increase of plasma scale length L. 2D particle-in-cell simulations are performed to investigate the intensities of high-order harmonics at different L values, which show that there are two optimal scale lengths Lopt for efficient ROM harmonic generation. The two optimal Lopt values are interpreted by a quasi-1D analytical model. By matching the potential energies provided by laser pulse and charge displacement in the plasma with an exponential distributed density profile, the model can quantitatively predict the optimal Lopt at the given laser incidence angle and intensity. Our work is beneficial for better understanding the role of L in ROM harmonic generation and the parameters affecting the optimal Lopt

Original languageEnglish
Article number103102
Number of pages6
JournalPhysics of Plasmas
Volume26
Issue number10
DOIs
Publication statusPublished - 1 Oct 2019

Fingerprint

harmonic generations
mirrors
gradients
harmonics
plasma density
lasers
incidence
potential energy
profiles
pulses
cells
simulation

Keywords

  • plasma density
  • relativistically oscillating mirror
  • harmonic generation

Cite this

Gao, Jian ; Li, Boyuan ; Liu, Feng ; Cai, Huaipeng ; Chen, Min ; Yuan, Xiaohui ; Ge, Xulei ; Chen, Liming ; Sheng, Zhengming ; Zhang, Jie. / Double optimal density gradients for harmonic generation from relativistically oscillating plasma surfaces. In: Physics of Plasmas. 2019 ; Vol. 26, No. 10.
@article{5e152f1023d94bce9420fc90073cb904,
title = "Double optimal density gradients for harmonic generation from relativistically oscillating plasma surfaces",
abstract = "The influence of plasma density gradients on the harmonic generation process from relativistically oscillating mirror (ROM) is studied experimentally. It is observed that the harmonic intensities from orders of 21 st to 24 th first drop and then reach the maximum value with the increase of plasma scale length L. 2D particle-in-cell simulations are performed to investigate the intensities of high-order harmonics at different L values, which show that there are two optimal scale lengths Lopt for efficient ROM harmonic generation. The two optimal Lopt values are interpreted by a quasi-1D analytical model. By matching the potential energies provided by laser pulse and charge displacement in the plasma with an exponential distributed density profile, the model can quantitatively predict the optimal Lopt at the given laser incidence angle and intensity. Our work is beneficial for better understanding the role of L in ROM harmonic generation and the parameters affecting the optimal Lopt",
keywords = "plasma density, relativistically oscillating mirror, harmonic generation",
author = "Jian Gao and Boyuan Li and Feng Liu and Huaipeng Cai and Min Chen and Xiaohui Yuan and Xulei Ge and Liming Chen and Zhengming Sheng and Jie Zhang",
year = "2019",
month = "10",
day = "1",
doi = "10.1063/1.5097440",
language = "English",
volume = "26",
journal = "Physics of Plasmas",
issn = "1070-664X",
number = "10",

}

Gao, J, Li, B, Liu, F, Cai, H, Chen, M, Yuan, X, Ge, X, Chen, L, Sheng, Z & Zhang, J 2019, 'Double optimal density gradients for harmonic generation from relativistically oscillating plasma surfaces', Physics of Plasmas, vol. 26, no. 10, 103102. https://doi.org/10.1063/1.5097440

Double optimal density gradients for harmonic generation from relativistically oscillating plasma surfaces. / Gao, Jian; Li, Boyuan; Liu, Feng; Cai, Huaipeng; Chen, Min; Yuan, Xiaohui; Ge, Xulei; Chen, Liming; Sheng, Zhengming; Zhang, Jie.

In: Physics of Plasmas, Vol. 26, No. 10, 103102, 01.10.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Double optimal density gradients for harmonic generation from relativistically oscillating plasma surfaces

AU - Gao, Jian

AU - Li, Boyuan

AU - Liu, Feng

AU - Cai, Huaipeng

AU - Chen, Min

AU - Yuan, Xiaohui

AU - Ge, Xulei

AU - Chen, Liming

AU - Sheng, Zhengming

AU - Zhang, Jie

PY - 2019/10/1

Y1 - 2019/10/1

N2 - The influence of plasma density gradients on the harmonic generation process from relativistically oscillating mirror (ROM) is studied experimentally. It is observed that the harmonic intensities from orders of 21 st to 24 th first drop and then reach the maximum value with the increase of plasma scale length L. 2D particle-in-cell simulations are performed to investigate the intensities of high-order harmonics at different L values, which show that there are two optimal scale lengths Lopt for efficient ROM harmonic generation. The two optimal Lopt values are interpreted by a quasi-1D analytical model. By matching the potential energies provided by laser pulse and charge displacement in the plasma with an exponential distributed density profile, the model can quantitatively predict the optimal Lopt at the given laser incidence angle and intensity. Our work is beneficial for better understanding the role of L in ROM harmonic generation and the parameters affecting the optimal Lopt

AB - The influence of plasma density gradients on the harmonic generation process from relativistically oscillating mirror (ROM) is studied experimentally. It is observed that the harmonic intensities from orders of 21 st to 24 th first drop and then reach the maximum value with the increase of plasma scale length L. 2D particle-in-cell simulations are performed to investigate the intensities of high-order harmonics at different L values, which show that there are two optimal scale lengths Lopt for efficient ROM harmonic generation. The two optimal Lopt values are interpreted by a quasi-1D analytical model. By matching the potential energies provided by laser pulse and charge displacement in the plasma with an exponential distributed density profile, the model can quantitatively predict the optimal Lopt at the given laser incidence angle and intensity. Our work is beneficial for better understanding the role of L in ROM harmonic generation and the parameters affecting the optimal Lopt

KW - plasma density

KW - relativistically oscillating mirror

KW - harmonic generation

UR - http://www.scopus.com/inward/record.url?scp=85073504587&partnerID=8YFLogxK

U2 - 10.1063/1.5097440

DO - 10.1063/1.5097440

M3 - Article

VL - 26

JO - Physics of Plasmas

JF - Physics of Plasmas

SN - 1070-664X

IS - 10

M1 - 103102

ER -