Observation on the competition mechanism of terahertz wave generation from filament in bias electric field

Shijia Feng; Liquan Dong; Yong Tan; Tong Wu; Danni Ma; Liangliang Zhang; Cunlin Zhang; Yuejin Zhao

doi:10.1016/j.optcom.2020.125917

Observation on the competition mechanism of terahertz wave generation from filament in bias electric field

Shijia Feng, Liquan Dong, Yong Tan, Tong Wu, Danni Ma, Liangliang Zhang^*, Cunlin Zhang, Yuejin Zhao

^*Corresponding author for this work

School of Optics and Photonics

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

5 Citations (Scopus)

Abstract

Femtosecond laser pulse-generated terahertz (THz) wave that undergoes filamentation in air in the presence of a DC bias electric field is composed of ponderomotive force-generated and electric field-induced THz. A threshold for the bias electric field that determines the characteristics of the final THz wave is observed. When the bias electric field strength is lower than the threshold, the THz wave tends to be characterized by the ponderomotive force. Moreover, the property of THz wave is mostly determined by a relatively high bias electric field. A theoretical model based on electrical dynamics has been developed to clarify the competition mechanism of THz wave generation.

Original language	English
Article number	125917
Journal	Optics Communications
Volume	473
DOIs	https://doi.org/10.1016/j.optcom.2020.125917
Publication status	Published - 15 Oct 2020

Keywords

Competition mechanism
DC bias electric field
Ponderomotive force
THz wave generation

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10.1016/j.optcom.2020.125917

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title = "Observation on the competition mechanism of terahertz wave generation from filament in bias electric field",

abstract = "Femtosecond laser pulse-generated terahertz (THz) wave that undergoes filamentation in air in the presence of a DC bias electric field is composed of ponderomotive force-generated and electric field-induced THz. A threshold for the bias electric field that determines the characteristics of the final THz wave is observed. When the bias electric field strength is lower than the threshold, the THz wave tends to be characterized by the ponderomotive force. Moreover, the property of THz wave is mostly determined by a relatively high bias electric field. A theoretical model based on electrical dynamics has been developed to clarify the competition mechanism of THz wave generation.",

keywords = "Competition mechanism, DC bias electric field, Ponderomotive force, THz wave generation",

author = "Shijia Feng and Liquan Dong and Yong Tan and Tong Wu and Danni Ma and Liangliang Zhang and Cunlin Zhang and Yuejin Zhao",

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T1 - Observation on the competition mechanism of terahertz wave generation from filament in bias electric field

AU - Feng, Shijia

AU - Dong, Liquan

AU - Tan, Yong

AU - Wu, Tong

AU - Ma, Danni

AU - Zhang, Liangliang

AU - Zhang, Cunlin

AU - Zhao, Yuejin

PY - 2020/10/15

Y1 - 2020/10/15

N2 - Femtosecond laser pulse-generated terahertz (THz) wave that undergoes filamentation in air in the presence of a DC bias electric field is composed of ponderomotive force-generated and electric field-induced THz. A threshold for the bias electric field that determines the characteristics of the final THz wave is observed. When the bias electric field strength is lower than the threshold, the THz wave tends to be characterized by the ponderomotive force. Moreover, the property of THz wave is mostly determined by a relatively high bias electric field. A theoretical model based on electrical dynamics has been developed to clarify the competition mechanism of THz wave generation.

AB - Femtosecond laser pulse-generated terahertz (THz) wave that undergoes filamentation in air in the presence of a DC bias electric field is composed of ponderomotive force-generated and electric field-induced THz. A threshold for the bias electric field that determines the characteristics of the final THz wave is observed. When the bias electric field strength is lower than the threshold, the THz wave tends to be characterized by the ponderomotive force. Moreover, the property of THz wave is mostly determined by a relatively high bias electric field. A theoretical model based on electrical dynamics has been developed to clarify the competition mechanism of THz wave generation.

KW - Competition mechanism

KW - DC bias electric field

KW - Ponderomotive force

KW - THz wave generation

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DO - 10.1016/j.optcom.2020.125917

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VL - 473

JO - Optics Communications

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Observation on the competition mechanism of terahertz wave generation from filament in bias electric field

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Keywords

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