Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

International Conference on Pulsed Lasers and Laser Applications (AMPL)

Simulation of the line profiles in the neon emission spectra in laser fields

Elena Vladimirovna Koryukina, V. I. Koryukin

Published Dec 2, 2021• 0 citations
Publisher

Abstract

A computer simulation of the spectral line profiles of the neon atom in an alternating circularly polarized electric field is carried out. The calculations are performed within the framework of a unified theoretical approach based on the numerical solution of the non-stationary Schrödinger equation. The simulation results make it possible to establish a number of regularities in the behavior of the neon spectral line profiles under changes in the electric field parameters. The resonance effects for the neon spectra in the electric field are investigated.

DOI
10.1117/12.2606692

Related papers

Computer simulation of the helium line profiles under laser excitation in near-resonance regions

Elena Vladimirovna Koryukina

The spectral line profiles of helium atoms in laser fields are simulated within the framework of the method based on the numerical solution of the non-stationary Schrödinger equation. The proposed method is free from limitations of perturbation theory and makes it possible to calculate the emission spectra of atoms both under non-resonant and resonant excitation by the electric field. The algorithm of this method is implemented in the StarkD software package written in FORTRAN and Maple. Within the framework of the proposed method, the behavior of the helium spectral line profiles is studied under changing electric field frequency in the range of 105 – 107 MHz, which is typical of lasers. A comparative analysis of the behavior of the helium spectral line profiles in resonances and interresonance regions is carried out. Practical applications of the obtained theoretical results are proposed.

International Conference on Pulsed Lasers and Laser Applications (AMPL)•Nov 2, 2023•0 citations

A theoretical study of line intensities in emission spectra of rare gas atoms in an alternating electric field

Elena Vladimirovna Koryukina

In this work, a new theoretical approach is suggested for calculating the Stark component intensities of spectral lines in atomic emission spectra in an alternating circularly polarized electric field. In the framework of the proposed approach, regularities in the behaviour of the Stark component intensities in emission spectra of rare gas atoms in the electric field have been revealed. The found regularities have allowed us to clarify mechanisms of increasing intensity of spectral lines and their quenching in the electric field.

Photonics & Electromagnetics Research Symposium - Spring (PIERS-Spring)•May 1, 2017•0 citations

The influence of the resonance effects on the radiative characteristics of helium plasma

Elena Vladimirovna Koryukina, V. I. Koryukin

In the present work, the influence of an alternating circularly polarized electric field on the energy spectrum of the He atom is studied. The calculations are performed by the method of the energy matrix diagonalization of an atom in the electric field. This method has allowed us to study the behaviour of the helium energy spectrum from the same numerical procedure under resonant and non-resonant excitations by the electric field. Based on the calculation results, we have found that the resonance effects take place not only in the vicinity of resonance, but they influence the shift directions of the Stark states even under non-resonant excitation. Additionally, we have established that the helium energy spectrum behaves consistently in the electric field. The results obtained have allowed us to clarify mechanisms of the influence of the resonance effects on the radiative characteristics of helium plasma.

Journal of Physics Conference Series•May 4, 2017•0 citations

Zeeman Spectra of the Cs-D2 Line

Isao Hirano

Abstract Zeeman spectra of the Cs- D 2 line are studied as a function of laser frequency for a static magnetic field. The spectral profiles change drastically with the angle between the plane of polarization of the incident, linearly-polarized laser beam and that of the analyzer. The theoretical spectra, allowing for polarizability, are in good agreement with the experimentally determined profiles for arbitrary angles.

•Oct 1, 1990•0 citations

Nonlinear effects in the emission and absorption spectra of gases in resonant optical fields

Igor M. Beterov, R. I. Sokolovskiǐ

The review systematizes the experimental material and reports the fundamental theoretical results on the study of nonlinear resonance effects in spectra of atomic systems situated in the radiation field of lasers. The theoretical part explains the topics of greatest importance and significance for understanding of the experimental studies: the Stark effect in an optical field; the nonequilibrium velocity distribution of the atoms; the shape of the spectral line for a transition adjacent to a transition combining with a strong field; the simultaneous manifestation of the Stark effect and of Doppler broadening in the form of a very sharp structure on the line contour; a brief mention of the influence of collisions, recoil, and other factors on the sharp structure in spectra. The experimental part reports the results of experiments on the observation of the Stark effect in the optical region of the spectrum, the fine structure of the profile of a Doppler-broadened line and its properties, namely the dependence on the observation direction, the anisotropy in the field of a standing wave, the polarization properties, etc. in spectra of spontaneous or stimulated emission, absorption, and generation.

Soviet Physics Uspekhi•Mar 31, 1973•3 citations

Spectral profiles of certain atomic lines

Rosemary Beatrice Higgins

Several calculations have been carried out using the transition operator technique. The radiative decay in a two-level quantum system with excited state coupled by an external perturbation has been investigated and an expression obtained for P(t), the probability of finding the atom in its excited state at time t. This is seen to possess a steady value for yt >> 1 and a third term which decays at nearly half the rate of its second. Next radiative decay of an atom with two close-lying excited states is considered and |bq| 2 , the spectral density for spontaneous emission from the uppermost level, calculated. This shows that the proximity of the upper two levels makes the line-shape non-Lorentxian. Heisenberg equations of motion were then derived for the transitions operators of an ℓ-level atom undergoing radiative decay, the possibility of overlapping pairs of levels being ignored. These master equations were then used to obtain the spectral profiles of certain atomic lines, employing the so-far avoided Markoff approximation. First the spectral density of the scattered radiation was found for transitions between levels 5P3/2 and 4S (ground state), and 6S and 5P 3/2, in the potassium atom when driving fields of arbitrary strength coupled levels 6S and 4P3/2, and 4P 3/2 and 4S. Triple-peaked profiles were obtained. Spectral profiles for emission were then derived for transitions between levels 3P and (ground state), and 3P and in the hydrogen atom when a driving field of arbitrary strength coupled levels The former profile was double the latter quadruple-peaked. Lastly master equations were derived for an atom, with two excited levels undergoing radiative decay, when allowance was made for thepossibility of their overlapping. A driving field of arbitrary magnitude coupled the uppermost and ground states. The spectrum for the scattered light resulting from transitions between the uppermost and ground state was found and graphs computed for various field strengths and separations of the excited states.

•Jan 1, 1974•0 citations
A computer simulation of the spectral line profiles of the neon atom in an alternating circularly polarized electric field is carried out. The calculations are performed within the framework of a unified theoretical approach based on the numerical solution of the non-stationary Schrödinger equation. The simulation results make it possible to establish a number of regularities in the behavior of the neon spectral line profiles under changes in the electric field parameters. The resonance effects for the neon spectra in the electric field are investigated.
The spectral line profiles of helium atoms in laser fields are simulated within the framework of the method based on the numerical solution of the non-stationary Schrödinger equation. The proposed method is free from limitations of perturbation theory and makes it possible to calculate the emission spectra of atoms both under non-resonant and resonant excitation by the electric field. The algorithm of this method is implemented in the StarkD software package written in FORTRAN and Maple. Within the framework of the proposed method, the behavior of the helium spectral line profiles is studied under changing electric field frequency in the range of 105 – 107 MHz, which is typical of lasers. A comparative analysis of the behavior of the helium spectral line profiles in resonances and interresonance regions is carried out. Practical applications of the obtained theoretical results are proposed.
In this work, a new theoretical approach is suggested for calculating the Stark component intensities of spectral lines in atomic emission spectra in an alternating circularly polarized electric field. In the framework of the proposed approach, regularities in the behaviour of the Stark component intensities in emission spectra of rare gas atoms in the electric field have been revealed. The found regularities have allowed us to clarify mechanisms of increasing intensity of spectral lines and their quenching in the electric field.
In the present work, the influence of an alternating circularly polarized electric field on the energy spectrum of the He atom is studied. The calculations are performed by the method of the energy matrix diagonalization of an atom in the electric field. This method has allowed us to study the behaviour of the helium energy spectrum from the same numerical procedure under resonant and non-resonant excitations by the electric field. Based on the calculation results, we have found that the resonance effects take place not only in the vicinity of resonance, but they influence the shift directions of the Stark states even under non-resonant excitation. Additionally, we have established that the helium energy spectrum behaves consistently in the electric field. The results obtained have allowed us to clarify mechanisms of the influence of the resonance effects on the radiative characteristics of helium plasma.
The review systematizes the experimental material and reports the fundamental theoretical results on the study of nonlinear resonance effects in spectra of atomic systems situated in the radiation field of lasers. The theoretical part explains the topics of greatest importance and significance for understanding of the experimental studies: the Stark effect in an optical field; the nonequilibrium velocity distribution of the atoms; the shape of the spectral line for a transition adjacent to a transition combining with a strong field; the simultaneous manifestation of the Stark effect and of Doppler broadening in the form of a very sharp structure on the line contour; a brief mention of the influence of collisions, recoil, and other factors on the sharp structure in spectra. The experimental part reports the results of experiments on the observation of the Stark effect in the optical region of the spectrum, the fine structure of the profile of a Doppler-broadened line and its properties, namely the dependence on the observation direction, the anisotropy in the field of a standing wave, the polarization properties, etc. in spectra of spontaneous or stimulated emission, absorption, and generation.
Several calculations have been carried out using the transition operator technique. The radiative decay in a two-level quantum system with excited state coupled by an external perturbation has been investigated and an expression obtained for P(t), the probability of finding the atom in its excited state at time t. This is seen to possess a steady value for yt >> 1 and a third term which decays at nearly half the rate of its second. Next radiative decay of an atom with two close-lying excited states is considered and |bq| 2 , the spectral density for spontaneous emission from the uppermost level, calculated. This shows that the proximity of the upper two levels makes the line-shape non-Lorentxian. Heisenberg equations of motion were then derived for the transitions operators of an ℓ-level atom undergoing radiative decay, the possibility of overlapping pairs of levels being ignored. These master equations were then used to obtain the spectral profiles of certain atomic lines, employing the so-far avoided Markoff approximation. First the spectral density of the scattered radiation was found for transitions between levels 5P3/2 and 4S (ground state), and 6S and 5P 3/2, in the potassium atom when driving fields of arbitrary strength coupled levels 6S and 4P3/2, and 4P 3/2 and 4S. Triple-peaked profiles were obtained. Spectral profiles for emission were then derived for transitions between levels 3P and (ground state), and 3P and in the hydrogen atom when a driving field of arbitrary strength coupled levels The former profile was double the latter quadruple-peaked. Lastly master equations were derived for an atom, with two excited levels undergoing radiative decay, when allowance was made for thepossibility of their overlapping. A driving field of arbitrary magnitude coupled the uppermost and ground states. The spectrum for the scattered light resulting from transitions between the uppermost and ground state was found and graphs computed for various field strengths and separations of the excited states.