scholarly journals Tuning time and energy resolution in time-resolved photoemission spectroscopy with nonlinear crystals

2020 ◽  
Vol 128 (9) ◽  
pp. 093101
Author(s):  
Alexandre Gauthier ◽  
Jonathan A. Sobota ◽  
Nicolas Gauthier ◽  
Ke-Jun Xu ◽  
Heike Pfau ◽  
...  
Keyword(s):  
Energy Resolution ◽  
Photoemission Spectroscopy ◽  
Time Resolved ◽  
Tuning Time ◽  
Nonlinear Crystals ◽  
Time And Energy

scholarly journals All-optical attosecond time domain interferometry

2020 ◽  
Author(s):  
Zhen Yang ◽  
Wei Cao ◽  
Yunlong Mo ◽  
Huiyao Xu ◽  
Kang Mi ◽  
...  
Keyword(s):  
Energy Resolution ◽  
Time Domain ◽  
Optical Pulse ◽  
Precision Measurements ◽  
Optical Interferometer ◽  
Transition Dipole ◽  
Interferometric Technique ◽  
All Optical ◽  
Energy Domain ◽  
Time And Energy

Abstract Interferometry, a key technique in modern precision measurements, has been used for length measurement in engineering metrology and astronomy. An analogous time-domain interferometric technique would represent a significant complement to spatial domain applications and require the manipulation of interference on extreme time and energy scales. Here, we report an all-optical interferometer using laser-driven high order harmonics as attosecond temporal slits. By controlling the phase of the temporal slits with an external field, a time domain interferometer that preserves attosecond temporal and hundreds of meV energy resolution is implemented. We apply this exceptional temporal resolution to reconstruct the waveform of an arbitrarily polarized optical pulse, and utilize the provided energy resolution to interrogate the abnormal character of the transition dipole near the Cooper minimum in argon. This novel attosecond interferometry paves the way for high precision measurements in the time energy domain using all-optical approaches.

scholarly journals Distinction of Electron Dispersion in Time-Resolved Photoemission Spectroscopy

2020 ◽  
Vol 125 (4) ◽  
Author(s):  
Qing Liao ◽  
Wei Cao ◽  
Qingbin Zhang ◽  
Kai Liu ◽  
Feng Wang ◽  
...  
Keyword(s):  
Photoemission Spectroscopy ◽  
Time Resolved ◽  
Electron Dispersion
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