Local most-probable routes and classical-quantum correspondence in strong-field two-dimensional tunneling ionization

Two-dimensional nanomaterials are becoming the focus of intensive research due to their novel physical properties and the potential applications in nanodevices. We define a quantum spectrum function using the eigenvalues and the eigenfunctions in the system of two-dimensional nanomaterials. We find that the Fourier transform of the quantum spectrum function reveals a lot of information of the classical orbits from one point to another for a particle in the two-dimensional nanomaterials. These results give new evidence about the classical-quantum correspondence. All the methods and results can be used in a lot of other systems, including some one-dimensional and three-dimensional systems. The researches about these systems are very important in the field of applied science.

Download Full-text

Two-dimensional photoelectron holography in strong-field tunneling ionization by counter rotating two-color circularly polarized laser pulses

Optics Express ◽

10.1364/oe.27.032193 ◽

2019 ◽

Vol 27 (22) ◽

pp. 32193 ◽

Cited By ~ 12

Author(s):

Qinghua Ke ◽

Yueming Zhou ◽

Jia Tan ◽

Mingrui He ◽

Jintai Liang ◽

...

Keyword(s):

Strong Field ◽

Laser Pulses ◽

Two Dimensional ◽

Circularly Polarized ◽

Tunneling Ionization

Download Full-text

Quantum Spectra and Classical Orbits in Artificial Atom

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.110-116.3316 ◽

2011 ◽

Vol 110-116 ◽

pp. 3316-3321

Author(s):

Jun Lu

Keyword(s):

Fourier Transform ◽

Two Dimensional ◽

Artificial Atom ◽

Closed Orbits ◽

Spectrum Function ◽

Classical Quantum ◽

The Fourier Transform ◽

Quantum Correspondence ◽

New Evidence ◽

Quantum Spectrum

We define a quantum spectrum function using the eigenvalues and the eigenfunctions in the system of two-dimensional artificial atom. We find that the Fourier transform of the quantum spectrum function reveals a lot of information of the classical closed orbits and the classical opened orbits from one point to another. These results give new evidence about the classical-quantum correspondence.

Download Full-text

Tunneling Ionization Study of Linear Molecules in Strong-Field Laser Pulses

Studia Universitatis Babeș-Bolyai Physica ◽

10.24193/subbphys.2020.07 ◽

2020 ◽

Vol 65 (1-2) ◽

pp. 57-68

Author(s):

V. Petrović ◽

◽

H. Delibašić ◽

I. Petrović ◽

◽

...

Keyword(s):

Ionization Potential ◽

Strong Field ◽

Laser Pulses ◽

Ionization Rate ◽

Rate Equations ◽

Tunneling Ionization ◽

Low Intensity ◽

Linear Molecules ◽

Experimental Findings ◽

Ionization Rates

"We theoretically studied photoionization of atoms and molecules in the frame of Perelomov-Popov-Terent’ev (PPT) and Ammosov-Delone-Krainov (ADK) theories. Strong-field single ionization of two diatomic molecules, N_2 and O_2, are studied and compared to Ar and Xe atoms, using an 800 nm Ti:sapphire laser in the 3×〖10〗^13 to 1×〖10〗^15 Wcm^(-2) intensity range. To eliminate disagreement between theoretical and experimental findings in a low intensity fields (~6×〖10〗^13 Wcm^(-2)), we considered the influence of shifted ionization potential. Including these effects in the ionization rates, we numerically solved rate equations in order to determine an expression for the ionization yields. The use of modiﬁed ionization potential showed that the ionization yields will actually decrease below values predicted by original (uncorrected) formulas. This paper will discuss the causes of this discrepancy. Keywords: tunneling ionization, ionization rate, ionization yield, molecules. "

Download Full-text