High-resolution resonance-enhanced multiphoton-ionization photoelectron spectroscopy of Rydberg states via spectral phase step shaping

RSC Advances ◽  
2013 ◽  
Vol 3 (30) ◽  
pp. 12185 ◽  
Author(s):  
Shian Zhang ◽  
Jichun Zhu ◽  
Chenhui Lu ◽  
Tianqing Jia ◽  
Jianrong Qiu ◽  
...  
Keyword(s):  
High Resolution ◽  
Photoelectron Spectroscopy ◽  
Multiphoton Ionization ◽  
Rydberg States ◽  
Spectral Phase ◽  
Phase Step

HIGH-RESOLUTION PHOTOELECTRON SPECTROSCOPY BY SPECTRAL PHASE STEP MODULATION

2013 ◽  
Vol 22 (04) ◽  
pp. 1350045
Author(s):  
YUNXIA HUANG ◽  
SHUWU XU ◽  
XIAOHUA YANG
Keyword(s):  
High Resolution ◽  
Photoelectron Spectroscopy ◽  
Photoelectron Spectrum ◽  
Modulation Depth ◽  
Spectral Phase ◽  
State Structure ◽  
Phase Step ◽  
Excite State ◽  
Broadband Spectrum ◽  
Photon Ionization

Femtosecond-induced resonance-enhanced multi-photon ionization photoelectron spectroscopy (REMPI-PES) has the drawback of low spectral resolution due to broadband spectrum of the laser. In this paper, we theoretically demonstrate that high-resolution REMPI-PES can be achieved by shaping the femtosecond laser pulse with spectral phase step modulation. Our results show that, by manipulating the phase step position and the modulation depth, a narrowband peak or hole in the photoelectron spectrum can be observed, and the position of the narrowband peak or hole is correlated with the eigenenergy of the excite state. Therefore, both high-resolution REMPI-PES and the excited state structure can be obtained by observing the narrowband peaks or holes.

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