Author Affiliations
Abstract
1 School of Science, East China Jiatong University, Nanchang 330013, China
2 School of Science, East China University of Technology, Nanchang 330013, China
3 State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
4 School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
We experimentally investigate the generation of above-threshold harmonics completely from argon atoms on an excited state using mid-infrared femtosecond laser pulses. The highly nonlinear dependences of the observed signal on the pulse energy and polarization of the probe laser pulses indicate its nonperturbative characteristic.
above-threshold harmonics excited state mid-infrared femtosecond laser 
High Power Laser Science and Engineering
2017, 5(4): 04000e26

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