Carrier Envelope Phase Description for an Isolated Attosecond Pulse by Momentum Vortices

Meng Li; Gui-zhong Zhang; Xin Ding; Jian-quan Yao

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Carrier Envelope Phase Description for an Isolated Attosecond Pulse by Momentum Vortices

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As a crucial parameter for a few-cycle laser pulse,the carrier envelope phase (CEP) substantially determines the laser waveform.We propose a method to directly describe the CEP of an isolated attosecond pulse (IAP) by the vortex-shaped momentum pattern,which is generated from the tunneling ionization of a hydrogen atomby a pair of time-delayed,oppositely and circularly polarized IAP-IR pulses.Superior to the angular streaking method that characterizes the CEP in terms of only one streak,our method describes the CEP of an IAP by the features of multiple streaks in the vortex pattern.The proposed method may open the possibility of capturing sub-cycle extreme ultraviolet dynamics.

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《中国物理快报：英文版》 |2019年第6期|24-28|共5页
作者
Meng Li; Gui-zhong Zhang; Xin Ding; Jian-quan Yao;
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作者单位

College of Precision Instrument and Optoelectronics Engineering;

Tianjin University;

Tianjin 300072;

Civil Aviation Meteorological Institute;

Key Laboratory of Operation Programming & Safety Technology of Air Traffic Management;

Civil Aviation University of China;

Tianjin 300300;

College of Precision Instrument and Optoelectronics Engineering;

Tianjin University;

Tianjin 300072;

College of Precision Instrument and Optoelectronics Engineering;

Tianjin University;

Tianjin 300072;

College of Precision Instrument and Optoelectronics Engineering;

Tianjin University;

Tianjin 300072;

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正文语种 eng
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Carrier Envelope Phase Description for an Isolated Attosecond Pulse by Momentum Vortices

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