Journal
OPTICS EXPRESS
Volume 24, Issue 21, Pages 23697-23706Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.24.023697
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Funding
- National Natural Science Foundation of China (NNSFC) [61405064, 11234004, 61475055]
- China Postdoctoral Science Foundation (CPSF) [0106012026]
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Backscattering photoelectron hologram (BPH) originating from direct and backward-rescattering electrons encodes important structural information and ultrafast dynamics of the underlying processes. However, the BPH is usually overshadowed by other interference structures in the photoelectrons momentum spectra, preventing a direct extraction of information using BPH. Here we theoretically demonstrate disentanglement of the BPH from other types of interference with the orthogonal two-color field, where a weak orthogonal component is used to streak the BPH. By carefully adjusting the relative phase of the two-color field, the BPH is effectively separated from other interferences in the photoelectron momentum spectra and thus the BPH is unambiguously identified. This takes a significant step to time-resolved imaging of the attosecond dynamics with strong-field photoelectron holography. (C) 2016 Optical Society of America
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