Isolated attosecond pulse generation with few-cycle two-color counter-rotating circularly polarized laser pulses

Wu, Jing-Yuan; Jia, Zhengmao; Zhang, Zhinan

doi:10.1088/1674-1056/26/9/093201

Cited by 8 publications

(6 citation statements)

References 45 publications

(50 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, the polarized two-color laser field allows us to control electron dynamics in NSDI. [2] The counter-rotating two-color circularly polarized (TCCP) laser field is also a hot topic due to achieving bright circularly polarized HHG [14][15][16][17][18] and low energy structures (LES) [19] as well as controlling electron-ion recattering. [20] The NSDI process can be explained by a three-step model.…”

Section: Introductionmentioning

confidence: 99%

Relative phase effect of nonsequential double ionization in Ar by two-color elliptically polarized laser field*

Chen

Han

et al. 2020

Chinese Phys. B

View full text Add to dashboard Cite

We investigated the nonsequential double ionization (NSDI) in Ar by two-color elliptically polarized laser field with a three-dimensional (3D) classical ensemble method. We study the relative phase effect of NSDI and distinguish two particular recollision channels in NSDI, which are recollision–impact ionization (RII) and recollision-induced excitation with subsequent ionization (RESI), according to the delay-time between the recollision and the final double ionization. The numerical results indicate that the ion momentum distribution is changed and the triangle structure is more obvious with the decrease of the relative phase. We also demonstrate that the RESI process always dominates in the whole double ionization process and the ratio of RESI and RII channels can be influenced by the relative phase.

show abstract

Section: Introductionmentioning

confidence: 99%

Relative phase effect of nonsequential double ionization in Ar by two-color elliptically polarized laser field*

Chen

Han

et al. 2020

Chinese Phys. B

View full text Add to dashboard Cite

show abstract

“…High-order harmonic generation (HHG) which is a useful tool to monitor quantum dynamics has been intensively investigated. [1][2][3][4][5][6][7] HHG could be used to produce attosecond pulse [8][9][10][11][12] that is a powerful tool to probe, track, control the dynamics of electron in ultrafast process. [13][14][15][16] Recently, linearly polarized attosecond pulse could be obtained from linear polarized harmonics in experiments, [17,18] and the HHG process is well described by semiclassical three-step model.…”

Section: Introductionmentioning

confidence: 99%

Selection of right-circular-polarized harmonics from p orbital of neon atom by two-color bicircular laser fields*

Xia

Lan

et al. 2019

Chinese Phys. B

View full text Add to dashboard Cite

The polarization properties of high-order harmonic generation (HHG) in the two-color circularly polarized laser fields are investigated by numerically solving the two-dimensional time-dependent Schrödinger equation. By adding a wavelength of 1600-nm right-circular-polarized field to an 800-nm left-circular-polarized field, HHG is simulated from a real model of neon atom with p orbital, but not from a hydrogen-like atom model with s orbital. The orders of 3n+1 can be selected while the orders of 3n+2 are suppressed by adjusting the intensities of the two pulses. The physical mechanism is analyzed by time–frequency analysis and semiclassical model.

show abstract

“…[5,6] Among them, HHG has attracted intense research interest, due to its potential applications as tabletop coherent radiation source in the extreme ultraviolet (XUV) and soft x-ray regions, [7] as well as attosecond pulses. [8][9][10][11][12] HHG facilitates measurements that could resolve electronic structure [13,14] and dynamic processes [15,16] on sub-femtosecond time scale and with sub-nanometer spatial resolution.…”

Section: Introductionmentioning

confidence: 99%

Quantum interference of multi-orbital effects in high-harmonic spectra from aligned carbon dioxide and nitrous oxide*

et al. 2019

View full text Add to dashboard Cite

We investigate experimentally multi-orbital effects in high-order harmonic generation (HHG) from aligned CO2 and N2O molecules by intense femtosecond laser fields with linear and elliptical polarizations. For either of the aligned molecules, a minimum in the harmonic spectrum is observed, the position of which shifts to lower-order harmonics when decreasing the intensity or increasing the ellipticity of the driving laser. This indicates that the minimum originates from the dynamic interference of different channels, of which the tunneling ionization and recombination are contributed via different molecular orbitals. The results show that both the highest occupied molecular orbital (HOMO) and low-lying HOMO-2 in CO2 (or HOMO-1 in N2O) contribute to the molecular HHG in both linearly and elliptically polarized strong laser fields. Our study would pave a way for understanding multi-electron dynamics from polyatomic molecules irradiated by strong laser fields.

show abstract

Isolated attosecond pulse generation with few-cycle two-color counter-rotating circularly polarized laser pulses

Cited by 8 publications

References 45 publications

Relative phase effect of nonsequential double ionization in Ar by two-color elliptically polarized laser field*

Relative phase effect of nonsequential double ionization in Ar by two-color elliptically polarized laser field*

Selection of right-circular-polarized harmonics from p orbital of neon atom by two-color bicircular laser fields*

Quantum interference of multi-orbital effects in high-harmonic spectra from aligned carbon dioxide and nitrous oxide*

Contact Info

Product

Resources

About