Spectral interference of terahertz pulses from two laser filaments in air

Yanping Chen; Zhelin Zhang; Zhen Zhang; Xiaohui Yuan; Feng Liu; Min Chen; Jianqiu Xu; Jin Yu; Zheng-Ming Sheng; Jie Zhang

doi:10.1063/1.4922143

Spectral interference of terahertz pulses from two laser filaments in air

Yanping Chen, Zhelin Zhang, Zhen Zhang, Xiaohui Yuan, Feng Liu, Min Chen, Jianqiu Xu, Jin Yu, Zheng-Ming Sheng, Jie Zhang

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

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Abstract

Spectral interference is experimentally demonstrated by two terahertz pulses emitting from filaments induced by two successive femtosecond laser pulses in air. Here, a leading pulse is set to be weaker than a trailing pulse and their temporal separation is larger than the pulse duration of the terahertz pulses. When the leading pulse is stronger than the trailing pulse, the frequency modulation within the whole terahertz envelope is greatly deteriorated due to nonlinear effects applying on the trailing pulse through the plasmas generated by the leading pulses. Such unique terahertz spectrum may find applications in terahertz spectroscopy.

Original language	English
Article number	221105
Number of pages	4
Journal	Applied Physics Letters
Volume	106
Issue number	22
DOIs	https://doi.org/10.1063/1.4922143
Publication status	Published - 3 Jun 2015

Keywords

emission spectra
frequency modulation
terahertz spectroscopy

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10.1063/1.4922143

Chen-etal-APL-2015-Spectral-interference-of-terahertz-pulses-from-two-laserAccepted author manuscript, 510 KB

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title = "Spectral interference of terahertz pulses from two laser filaments in air",

abstract = "Spectral interference is experimentally demonstrated by two terahertz pulses emitting from filaments induced by two successive femtosecond laser pulses in air. Here, a leading pulse is set to be weaker than a trailing pulse and their temporal separation is larger than the pulse duration of the terahertz pulses. When the leading pulse is stronger than the trailing pulse, the frequency modulation within the whole terahertz envelope is greatly deteriorated due to nonlinear effects applying on the trailing pulse through the plasmas generated by the leading pulses. Such unique terahertz spectrum may find applications in terahertz spectroscopy.",

keywords = "emission spectra, frequency modulation, terahertz spectroscopy",

author = "Yanping Chen and Zhelin Zhang and Zhen Zhang and Xiaohui Yuan and Feng Liu and Min Chen and Jianqiu Xu and Jin Yu and Zheng-Ming Sheng and Jie Zhang",

year = "2015",

month = jun,

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doi = "10.1063/1.4922143",

language = "English",

volume = "106",

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T1 - Spectral interference of terahertz pulses from two laser filaments in air

AU - Chen, Yanping

AU - Zhang, Zhelin

AU - Zhang, Zhen

AU - Yuan, Xiaohui

AU - Liu, Feng

AU - Chen, Min

AU - Xu, Jianqiu

AU - Yu, Jin

AU - Sheng, Zheng-Ming

AU - Zhang, Jie

PY - 2015/6/3

Y1 - 2015/6/3

N2 - Spectral interference is experimentally demonstrated by two terahertz pulses emitting from filaments induced by two successive femtosecond laser pulses in air. Here, a leading pulse is set to be weaker than a trailing pulse and their temporal separation is larger than the pulse duration of the terahertz pulses. When the leading pulse is stronger than the trailing pulse, the frequency modulation within the whole terahertz envelope is greatly deteriorated due to nonlinear effects applying on the trailing pulse through the plasmas generated by the leading pulses. Such unique terahertz spectrum may find applications in terahertz spectroscopy.

AB - Spectral interference is experimentally demonstrated by two terahertz pulses emitting from filaments induced by two successive femtosecond laser pulses in air. Here, a leading pulse is set to be weaker than a trailing pulse and their temporal separation is larger than the pulse duration of the terahertz pulses. When the leading pulse is stronger than the trailing pulse, the frequency modulation within the whole terahertz envelope is greatly deteriorated due to nonlinear effects applying on the trailing pulse through the plasmas generated by the leading pulses. Such unique terahertz spectrum may find applications in terahertz spectroscopy.

KW - emission spectra

KW - frequency modulation

KW - terahertz spectroscopy

U2 - 10.1063/1.4922143

DO - 10.1063/1.4922143

M3 - Letter

SN - 0003-6951

VL - 106

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 22

M1 - 221105

ER -

Spectral interference of terahertz pulses from two laser filaments in air

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Keywords

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