Realization of Polarization Control in High-Order Harmonic Generation

Huang, Po-Yuan; Hernández-García, Carlos; Huang, Jiayi; Huang, Po-Yao; Rego, Laura; Lu, Chih-Hsuan; Yang, Shiaw‐Der; Plaja, Luis; Kung, A. H.; Chen, Ming-Chang

doi:10.1109/jstqe.2019.2919777

Cited by 7 publications

(3 citation statements)

References 63 publications

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“…We report what we believe to be the first all-optical energyresolved EUV polarimeter, which differs from previously published results [1,2] in which only monochromatic light could be measured. Adding one diffraction element and recording all spectral responses (see Fig.…”

Section: S1 Energy-resolved Euv Polarimetercontrasting

confidence: 96%

Supplementary document for High-Order Nonlinear Dipole Response Characterized by Extreme-Ultraviolet Ellipsometry - 5095091.pdf

Chang,

Huang,

Asaga

et al. 2021

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Section: S1 Energy-resolved Euv Polarimetercontrasting

confidence: 96%

Supplementary document for High-Order Nonlinear Dipole Response Characterized by Extreme-Ultraviolet Ellipsometry - 5095091.pdf

Chang,

Huang,

Asaga

et al. 2021

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“…The interaction of high-intensity laser pulses with atoms or molecules leads to a series of nonlinear phenomena, [1][2][3] such as multiphoton ionization (MPI), [4,5] nonsequential double ionization, [6,7] above-threshold ionization, [8][9][10][11] Coulomb explosions, [12,13] and high-order harmonic generation (HHG). [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] HHG is an effective means to obtain desktop shortwave coherent radiation source, and its spectral range has expanded from infrared to extreme ultraviolet band and across the soft x-ray (1 nm-30 nm) band. Moreover, it can be used to generate attosecond pulses and detect the electronic structure of atoms and molecules.…”

Section: Introductionmentioning

confidence: 99%

Amplitude and rotation of the ellipticity of harmonics from a linearly polarized laser field

Li¹,

Gao²,

Yu³

et al. 2022

Chinese Phys. B

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We simulate the dynamic response of $\mathrm{H}_{2}^{+}$ in a linearly polarized laser field by numerically solving the time-dependent Schrödinger equation (TDSE). The elliptically polarized high-order harmonics generated by $\mathrm{H}_{2}^{+}$ irradiated by the linearly polarized laser field is systematically investigated. It is found that the amplitude and rotation of the ellipticity of harmonics are affected by the alignment angle and internuclear distance of molecule, and by analyzing the change of the forces acted on the ionized electrons and the trajectories of the electrons, the phenomena are resulted from the change in the direction of the total coulomb forces from the two nuclear felt by the re-collided ionized electrons in the direction perpendicular to laser polarization direction. According to the influence law, we can select the harmonics with specific frequency band under different alignment angles, then synthesize the isolated attosecond pulses with different rotation, which can be continuously converted from right-handed circular polarization, linear polarization and left-handed circular polarization with the change of the alignment angle. It provides a new possible approach to the real-time detection of molecular states by attosecond pulses and obtaining more optimized harmonics by molecular properties.

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“…If driven elliptically, the recombination probability diminishes, drastically reducing the yield of the high-order harmonic emission [8]. Fortunately, different techniques have recently exploited the extremely coherent nature of HHG to generate high-order harmonics-and attosecond pulses-with polarization states from linear to circular [9]. The use of non-symmetric targets, such as molecules or solids [10,11], or the use of proper combinations of linearly polarized drivers with different frequencies [12] enable the generation of elliptically polarized harmonics.…”

mentioning

confidence: 99%

Trains of attosecond pulses structured with time-ordered polarization states

et al. 2020

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Ultrafast laser pulses generated at the attosecond timescale represent a unique tool to explore the fastest dynamics in matter. An accurate control of their properties, such as polarization, is fundamental to shape three-dimensional laser-driven dynamics. We introduce a technique to generate attosecond pulse trains whose polarization state varies from pulse to pulse. This is accomplished by driving high-harmonic generation with two time-delayed bichromatic counter-rotating fields with proper orbital angular momentum (OAM) content. Our simulations show that the evolution of the polarization state along the train can be controlled via OAM, pulse duration, and time delay of the driving fields. We, thus, introduce an additional control into structured attosecond pulses that provides an alternative route to explore ultrafast dynamics with potential applications in chiral and magnetic materials.

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Realization of Polarization Control in High-Order Harmonic Generation

Cited by 7 publications

References 63 publications

Supplementary document for High-Order Nonlinear Dipole Response Characterized by Extreme-Ultraviolet Ellipsometry - 5095091.pdf

Supplementary document for High-Order Nonlinear Dipole Response Characterized by Extreme-Ultraviolet Ellipsometry - 5095091.pdf

Amplitude and rotation of the ellipticity of harmonics from a linearly polarized laser field

Trains of attosecond pulses structured with time-ordered polarization states

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