Isolated attosecond pulses generation from coherent superposition state of helium ion in static electric fields and spatial nonhomogeneous fields

Hao Liu; Zhengzhong Zhang; Yangjiang Wu; Shicheng Jiang; Chao Yu

doi:10.1142/S0217979216502295

Isolated attosecond pulses generation from coherent superposition state of helium ion in static electric fields and spatial nonhomogeneous fields

Hao Liu
, Zhengzhong Zhang
, Yangjiang Wu
, Shicheng Jiang
, Chao Yu^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

We present a systematic study of high-order harmonic generation (HHG) from helium ion with the initial state prepared as a coherent superposition of electronic ground state and an excited state. As a result, the conversion efficiency of the harmonic spectrum is significantly enhanced. When we add a static electric field in fundamental field, the supercontinuum region of the harmonic spectrum is distinctly extended and an isolated 100 as pulse can be generated. Moreover, we use a spatial nonhomogeneous field to increase the cutoff energy in high-order harmonic generation spectrum, which can be extended to about 700 eV, and an isolated 50 as pulse can be obtained directly by the superposition of the supercontinuum harmonics.

Original language	English
Article number	1650229
Journal	International Journal of Modern Physics B
Volume	30
Issue number	31
DOIs	https://doi.org/10.1142/S0217979216502295
State	Published - 20 Dec 2016
Externally published	Yes

Keywords

High-order harmonic generation
attosecond pulses
coherent superposition state
nonhomogeneous field

Access to Document

10.1142/S0217979216502295

Cite this

@article{1f9d84bd619347b796a2fb67a088c3a6,

title = "Isolated attosecond pulses generation from coherent superposition state of helium ion in static electric fields and spatial nonhomogeneous fields",

abstract = "We present a systematic study of high-order harmonic generation (HHG) from helium ion with the initial state prepared as a coherent superposition of electronic ground state and an excited state. As a result, the conversion efficiency of the harmonic spectrum is significantly enhanced. When we add a static electric field in fundamental field, the supercontinuum region of the harmonic spectrum is distinctly extended and an isolated 100 as pulse can be generated. Moreover, we use a spatial nonhomogeneous field to increase the cutoff energy in high-order harmonic generation spectrum, which can be extended to about 700 eV, and an isolated 50 as pulse can be obtained directly by the superposition of the supercontinuum harmonics.",

keywords = "High-order harmonic generation, attosecond pulses, coherent superposition state, nonhomogeneous field",

author = "Hao Liu and Zhengzhong Zhang and Yangjiang Wu and Shicheng Jiang and Chao Yu",

note = "Publisher Copyright: {\textcopyright} 2016 World Scientific Publishing Company.",

year = "2016",

month = dec,

day = "20",

doi = "10.1142/S0217979216502295",

language = "英语",

volume = "30",

journal = "International Journal of Modern Physics B",

issn = "0217-9792",

publisher = "World Scientific",

number = "31",

}

TY - JOUR

T1 - Isolated attosecond pulses generation from coherent superposition state of helium ion in static electric fields and spatial nonhomogeneous fields

AU - Liu, Hao

AU - Zhang, Zhengzhong

AU - Wu, Yangjiang

AU - Jiang, Shicheng

AU - Yu, Chao

PY - 2016/12/20

Y1 - 2016/12/20

N2 - We present a systematic study of high-order harmonic generation (HHG) from helium ion with the initial state prepared as a coherent superposition of electronic ground state and an excited state. As a result, the conversion efficiency of the harmonic spectrum is significantly enhanced. When we add a static electric field in fundamental field, the supercontinuum region of the harmonic spectrum is distinctly extended and an isolated 100 as pulse can be generated. Moreover, we use a spatial nonhomogeneous field to increase the cutoff energy in high-order harmonic generation spectrum, which can be extended to about 700 eV, and an isolated 50 as pulse can be obtained directly by the superposition of the supercontinuum harmonics.

AB - We present a systematic study of high-order harmonic generation (HHG) from helium ion with the initial state prepared as a coherent superposition of electronic ground state and an excited state. As a result, the conversion efficiency of the harmonic spectrum is significantly enhanced. When we add a static electric field in fundamental field, the supercontinuum region of the harmonic spectrum is distinctly extended and an isolated 100 as pulse can be generated. Moreover, we use a spatial nonhomogeneous field to increase the cutoff energy in high-order harmonic generation spectrum, which can be extended to about 700 eV, and an isolated 50 as pulse can be obtained directly by the superposition of the supercontinuum harmonics.

KW - High-order harmonic generation

KW - attosecond pulses

KW - coherent superposition state

KW - nonhomogeneous field

UR - https://www.scopus.com/pages/publications/85002930162

U2 - 10.1142/S0217979216502295

DO - 10.1142/S0217979216502295

M3 - 文章

AN - SCOPUS:85002930162

SN - 0217-9792

VL - 30

JO - International Journal of Modern Physics B

JF - International Journal of Modern Physics B

IS - 31

M1 - 1650229

ER -

Isolated attosecond pulses generation from coherent superposition state of helium ion in static electric fields and spatial nonhomogeneous fields

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this