scholarly journals Inter-half-cycle spectral interference in high-order harmonic generation from monolayer MoS2

2021 ◽  
Vol 29 (4) ◽  
pp. 4830
Author(s):  
Jiayuan Cao ◽  
Fangshu Li ◽  
Ya Bai ◽  
Peng Liu ◽  
Ruxin Li
Keyword(s):  
Harmonic Generation ◽  
Spectral Interference ◽  
High Order ◽  
Half Cycle ◽  
Monolayer Mos2 ◽  
High Order Harmonic Generation ◽  
High Order Harmonic

scholarly journals Polarization-resolved analysis of high-order harmonic generation in monolayer MoS2

2020 ◽  
Vol 22 (7) ◽  
pp. 073046
Author(s):  
Candong Liu ◽  
Yinghui Zheng ◽  
Zhinan Zeng ◽  
Ruxin Li
Keyword(s):  
Harmonic Generation ◽  
High Order ◽  
Monolayer Mos2 ◽  
High Order Harmonic Generation ◽  
High Order Harmonic

Improvement of High-Order Harmonic Generation Via Controlling Multiple Acceleration–Recombination Process

2019 ◽  
Vol 74 (7) ◽  
pp. 561-571 ◽  
Author(s):  
Yi Li ◽  
Li-Qiang Feng ◽  
Yan Qiao
Keyword(s):  
Harmonic Generation ◽  
Laser Field ◽  
High Order ◽  
Recombination Process ◽  
Half Cycle ◽  
High Order Harmonic Generation ◽  
Water Window ◽  
High Order Harmonic ◽  
Window Region ◽  
Frequency Chirping

AbstractThe multiple acceleration–recombination process in high-order harmonic generation (HHG) has been investigated and discussed. Generally, the HHG can be explained through the ionization–acceleration–recombination process in each half-cycle waveform of the laser field. In this article, through the waveform control via the two-colour frequency-chirping laser field, the multiple acceleration–recombination process of the free electron in a specific “W” waveform structure can be found, which will lead to the larger emitted photon energies. Moreover, with the optimization of this “W” waveform by changing the frequency chirps, the carrier envelope phases, and the delay time, not only the efficiency of HHG can be enhanced compared with that from the original chirp-free pulse, but also the larger harmonic cutoff can be obtained. Further, with the assistance of the unipolar pulses, the cutoff and the efficiency of HHG can be further improved, showing a water window spectral continuum with the intensity enhancement of 66 times. As a result, by properly superposing some selected harmonics on the spectral continuum, three intense 38-as pulses in the water window region can be obtained.

Relativistic high-order harmonic generation

2003 ◽  
Vol 50 (3-4) ◽  
pp. 375-386
Author(s):  
D. B. MilosÕeviĆ ◽  
W. Becker
Keyword(s):  
Harmonic Generation ◽  
High Order ◽  
High Order Harmonic Generation ◽  
High Order Harmonic
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