| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Spider Structure of Photoelectron Momentum Distributions of Ionized Electrons from Hydrogen Atoms for Extraction of Carrier Envelope Phase of Few-Cycle Pulses |
| Jiu Tang1,2, Guizhong Zhang1,2**, Yufei He1,2, Meng Li1,2,3, Xin Ding1,2, Jianquan Yao1,2 |
1College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072
2Key Lab of Optoelectronic Information Technology (Ministry of Education), Tianjin University, Tianjin 300072
3Key Laboratory of Operation Programming & Safety Technology of Air Traffic Management, Civil Aviation University of China, Tianjin 300300
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Jiu Tang, Guizhong Zhang, Yufei He et al 2020 Chin. Phys. Lett. 37 024201 |
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Abstract The spider structure in the photoelectron momentum distributions (PMDs) of ionized electrons from the hydrogen atom is simulated by solving the time-dependent Schrödinger equation (TDSE). We find that the spider structure exhibits sensitive dependence on carrier envelope phase (CEP) of the few-cycle pulses. To elucidate the striking CEP dependence of the spider structure, we select three physical parameters $I_{\rm L}$, $I_{\rm R}$, and $I_{\rm R}/I_{\rm L}$ to quantitatively characterize the variations of the spider structure induced by altering the CEPs. $I_{\rm L}$ is the sum of the left half panel of the transverse cut curves (i.e., the sum of all the negative momenta along the laser polarization direction), $I_{\rm R}$ is the sum of the right half panel of the transverse cut curves (i.e., the sum of all the positive momenta along the laser polarization direction), and $I_{\rm R}/I_{\rm L}$ is the ratio between the two sums. These parameters are shown to have monotonic relation with the CEP value, which is exploited to extract the CEPs. We anticipate that our method will be useful for obtaining CEPs encoded in the spider structure of PMDs.
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Received: 11 November 2019
Published: 18 January 2020
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos. 11674243 and 11674242, and the Fundamental Research Funds for the Central Universities under Grant No. 3122016D014. |
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