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

Journal of the Optical Society of America B

Theoretical model for an atomic optical filter based on optical anisotropy

Zhusong He, Yundong Zhang, Hao Wu, Ping Yuan, Shuangqiang Liu

Published Aug 18, 2009• 13 citations
Publisher

Abstract

We develop a three-level theoretical model for atomic optical filters based on optical anisotropy induced by the circularly polarized pump field. Calculative results are in good agreement with experimental results reported previously [Opt. Lett27, 500 (2002)]. The filtering characteristics such as the functions of pump intensity, pump detuning, and cell temperature are studied, respectively. The theoretical analysis presented here is expected to be useful in investigating atomic optical filters and polarization spectroscopy.

DOI
10.1364/josab.26.001755

Related papers

Incoherent pump assisted atomic filter based on laser-induced optical anisotropy

Shuangqiang Liu, Yundong Zhang

We describe the effects of incoherent pump on an atomic filter based on laser-induced optical anisotropy in a three-level ladder system interacting with a strong pump polarized circularly and a weak probe polarized linearly. According to the analysis of the numerical simulation results with some comparison, at the same time of eliminating noise, the filter can enhance the probe's transmission or even the probe gain can be achieved without population inversion. Moreover, the incoherent pumping rate and the cell temperature performance are evaluated and measures are taken to improve the filter's transmission and tunability by selecting proper parameters.

Applied Optics•Oct 11, 2012•1 citation

Optical pumping effects in high resolution laser spectroscopy

Shigeru Nakayama

A theoretical analysis of the relative intensities of the Doppler-free signals in saturation spectroscopy, velocity selective optical pumping (VSOP) spectroscopy, polarization spectroscopy and a mixing of saturation and polarization spectroscopies is presented using the approximation of a single cycle of optical pumping in a four-level system. An optical pumping process in the Zeeman sublevels is taken into account owing to the important role of spontaneous emission even if the sublevels are degenerate. Arbitrary polarization combinations are considered for pump and probe beams. The similarities and differences between three kinds of spectroscopy are made clear. Both circular and linear optical anisotropies induced by the pump beam are considered in this theoretical calculation. The magnitude and sign of Doppler-free resonances in each spectroscopy are quite different owing to the polarizations of the pump and probe beams. The four-level system is important as a three-level approximation. The results obtained from the four-level optical pumping theory are in good agreement with experimental reports.

Physica Scripta•Jan 1, 1997•29 citations

Selective optical pumping process in Doppler-broadened atoms

Shuangqiang Liu, Yundong Zhang, Daikun Fan +2 more

By solving the optical Bloch equations with the rate-equation approximation, we calculate the time dependence of the magnetic sublevel populations of Doppler-broadened atoms. With an increase of the left-circularly polarized pump intensity, the population fraction of a certain sublevel of the excited state almost reaches 0.3, resulting in anisotropy in the excited state, which is important to the optical filter based on circular birefringence and dichroism. Furthermore, numerical results show that the real saturation pump intensity for the moving atoms is much larger than that for the resting atoms.

Applied Optics•Apr 7, 2011•7 citations

Effect of selective saturated absorption on atomic line filter

Shuangqiang Liu, Weimin Sun

We report an atomic filter based on optical pumping induced anisotropy in Doppler-broadened two-level atoms. Atomic line filters (ALF) in previous research used a selective pump to populate atoms on special Zeeman sub-levels to obtain optical anisotropy because of dipole selection rules. Unlike them, we proposed a novel method to get circular anisotropy realized by selectively saturated absorption in rubidium.

International Conference on Optoelectronics and Microelectronics•Sep 1, 2013•0 citations

Theoretical model of an atomic line filter based on the combination of a double selective pump

Zhenyu Zhu, Hanyang Li, Weimin Sun +1 more

We present a model of an atomic filter based on laser-induced optical anisotropy that is achieved by the combination of a double selective pump. Most of these kinds of atomic optical filters reported previously adopt only one pump to make the atoms populate on particular sublevels. In this paper, another pump is added to the filter system to make sure all the atoms are in the pump–probe cycle. The feasibility of the re-pump is analyzed by employing the rate equation, and the contribution of the re-pump to the filter is discussed under various conditions. Simulation results show that the re-pump can not only enhance the transmission of the filter, but also vary the transmission spectrum peak wavelength.

Applied Optics•Dec 21, 2016•2 citations

Discrimination of the effects of saturation and optical pumping in velocity-dependent pump-probe spectroscopy of rubidium: A simple analytical study

Heung‐Ryoul Noh, Geol Moon, Wonho Jhe

This paper presents a simple analytical theory for the velocity-dependent pump-probe laser spectroscopy of $^{87}\mathrm{Rb}$ and $^{85}\mathrm{Rb}$ atoms where the pump and the probe beams are circularly or linearly polarized. The analytical solutions of the line shapes of the velocity-selective optical pumping spectroscopy [G. Moon and H. R. Noh, Phys. Rev. A 78, 032506 (2008)] and saturated absorption spectroscopy [G. Moon and H. R. Noh, J. Opt. Soc. Am. B 25, 701 (2008); 27, 1741 (2010)] obtained in the previous reports, expressed as a sum of several Lorentzian functions, could be approximated as one (or in some cases, two) Lorentzian function(s). In particular, the contributions of the saturation and optical pumping effects could be discriminated explicitly in these simple analytical solutions, which is not possible in existing theories such as Nakayama's model. The simple analytical results for the saturation spectroscopy were compared with experimental results, and good agreement between them was observed.

Physical Review A•Dec 27, 2010•14 citations
We develop a three-level theoretical model for atomic optical filters based on optical anisotropy induced by the circularly polarized pump field. Calculative results are in good agreement with experimental results reported previously [Opt. Lett27, 500 (2002)]. The filtering characteristics such as the functions of pump intensity, pump detuning, and cell temperature are studied, respectively. The theoretical analysis presented here is expected to be useful in investigating atomic optical filters and polarization spectroscopy.
We describe the effects of incoherent pump on an atomic filter based on laser-induced optical anisotropy in a three-level ladder system interacting with a strong pump polarized circularly and a weak probe polarized linearly. According to the analysis of the numerical simulation results with some comparison, at the same time of eliminating noise, the filter can enhance the probe's transmission or even the probe gain can be achieved without population inversion. Moreover, the incoherent pumping rate and the cell temperature performance are evaluated and measures are taken to improve the filter's transmission and tunability by selecting proper parameters.
A theoretical analysis of the relative intensities of the Doppler-free signals in saturation spectroscopy, velocity selective optical pumping (VSOP) spectroscopy, polarization spectroscopy and a mixing of saturation and polarization spectroscopies is presented using the approximation of a single cycle of optical pumping in a four-level system. An optical pumping process in the Zeeman sublevels is taken into account owing to the important role of spontaneous emission even if the sublevels are degenerate. Arbitrary polarization combinations are considered for pump and probe beams. The similarities and differences between three kinds of spectroscopy are made clear. Both circular and linear optical anisotropies induced by the pump beam are considered in this theoretical calculation. The magnitude and sign of Doppler-free resonances in each spectroscopy are quite different owing to the polarizations of the pump and probe beams. The four-level system is important as a three-level approximation. The results obtained from the four-level optical pumping theory are in good agreement with experimental reports.
By solving the optical Bloch equations with the rate-equation approximation, we calculate the time dependence of the magnetic sublevel populations of Doppler-broadened atoms. With an increase of the left-circularly polarized pump intensity, the population fraction of a certain sublevel of the excited state almost reaches 0.3, resulting in anisotropy in the excited state, which is important to the optical filter based on circular birefringence and dichroism. Furthermore, numerical results show that the real saturation pump intensity for the moving atoms is much larger than that for the resting atoms.
We present a model of an atomic filter based on laser-induced optical anisotropy that is achieved by the combination of a double selective pump. Most of these kinds of atomic optical filters reported previously adopt only one pump to make the atoms populate on particular sublevels. In this paper, another pump is added to the filter system to make sure all the atoms are in the pump–probe cycle. The feasibility of the re-pump is analyzed by employing the rate equation, and the contribution of the re-pump to the filter is discussed under various conditions. Simulation results show that the re-pump can not only enhance the transmission of the filter, but also vary the transmission spectrum peak wavelength.
This paper presents a simple analytical theory for the velocity-dependent pump-probe laser spectroscopy of 87Rb^{87}\mathrm{Rb}87Rb and 85Rb^{85}\mathrm{Rb}85Rb atoms where the pump and the probe beams are circularly or linearly polarized. The analytical solutions of the line shapes of the velocity-selective optical pumping spectroscopy [G. Moon and H. R. Noh, Phys. Rev. A 78, 032506 (2008)] and saturated absorption spectroscopy [G. Moon and H. R. Noh, J. Opt. Soc. Am. B 25, 701 (2008); 27, 1741 (2010)] obtained in the previous reports, expressed as a sum of several Lorentzian functions, could be approximated as one (or in some cases, two) Lorentzian function(s). In particular, the contributions of the saturation and optical pumping effects could be discriminated explicitly in these simple analytical solutions, which is not possible in existing theories such as Nakayama's model. The simple analytical results for the saturation spectroscopy were compared with experimental results, and good agreement between them was observed.