Chinese Optics Letters, 2017, 15 (11): 110201, Published Online: Jul. 19, 2018  

Characterizing carrier envelope phase of an isolated attosecond pulse with annular photoionization momentum spectra Download: 1053次

Author Affiliations
1 College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
2 Civil Aviation Meteorological Institute, Key Laboratory of Operation Programming and Safety Technology of Air Traffic Management, Civil Aviation University of China, Tianjin 300300, China
Abstract
The carrier envelope phase (CEP) has a direct impact on the physical properties of an isolated attosecond pulse (IAP) and many strong field processes, but it is difficult to measure in reality. Aiming at obtaining more accurate and complete characterization of CEP, we numerically investigate the annular photoelectron momentum spectra of the hydrogen atom ionized by overlapped fields of an IAP and an infrared (IR) pulse. By defining an overlapping parameter, the momentum patterns are classified and optimized for unambiguously measuring the rotation angle of a momentum pattern versus the CEP value. A series of simulations verify its robustness.

Meng Li, Guizhong Zhang, Tianqi Zhao, Xin Ding, Jian Yao. Characterizing carrier envelope phase of an isolated attosecond pulse with annular photoionization momentum spectra[J]. Chinese Optics Letters, 2017, 15(11): 110201.

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