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

Acta Physica Sinica

Experimental investigation of electromagnetically induced transparency with double-pumping lasers

Jianming Zhao, Yanting Zhao, Huang Tao, Liantuan Xiao, Jia Suo-Tang, 山西大学物理电子工程学院,量子光学和光量子器件国家重点实验室,太原 030006

Published Jan 1, 2004• 2 citations
Publisher

Abstract

The effect of pumping laser intensity on electromagnetically induced transparency (EIT) in the cesium atomic three-level system was investigated, and the EIT against double-pumping laser was obtained. The theoretical explanation was put forward using density matrix, and the experimental results is in agreement with theoretical calculation.

DOI
10.7498/aps.53.1023

Related papers

Dynamics of multi-type electromagnetically induced transparency in V -system of cesium atoms at room temperature

Muhammad Haroon Saeed, Hinna Tariq, Muhammad Hamza Faisal +3 more

Abstract We experimentally studied the electromagnetically induced transparency (EIT) in cesium (Cs) vapors under a three-level V -configuration system. Two independent diode lasers were employed in locked and scanning mode, respectively, for pumping and probing the atomic media. A probe laser was scanned across 6 S 1/2 ( F = 4) to all subsutructures of 6 P 3/2 ( F ′ = 5 , F ′ = 4 and F ′ = 3 ) and the pump was locked at F ′ = 5 or F ′ = 4 or F ′ = 3 of 6 P 3/2 . A good agreement of the experimental results with theoretical simulations was observed. The intensity and magnetic field dependence of the EIT spectrum in a V -type system of Cs atoms was also studied.

Laser Physics Letters•Sep 22, 2020•1 citation

Double-resonance optical-pumping effect and ladder-type electromagnetically induced transparency signal without Doppler background in cesium atomic vapour cell

Baodong Yang, Jing Gao, Qiangbing Liang +3 more

In a Doppler-broadened ladder-type cesium atomic system (6S 1/2 -6P 3/2 -8S 1/2 ), this paper characterizes electromagnetically induced transparency (EIT) in two different experimental arrangements, and investigates the influence of the double-resonance optical-pumping (DROP) effect on EIT in both arrangements. When the probe laser is weak, DROP is explicitly suppressed. When the probe laser is moderate, population of the intermediate level (6P 3/2 F ' = 5) is remarkable, therefore DROP is mixed with EIT. An interesting bimodal spectrum with the broad component due to DROP and the narrow part due to EIT has been clearly observed in cesium 6S 1/2 F = 4−6P 3/2 F ' = 5−8S 1/2 F '' = 4 transitions.

Chinese Physics B•Apr 1, 2011•18 citations

Electromagnetically Induced Absorption of Degenerate Two-Level System in a Cesium Vapor Cell

Gang Li

Employing an intense laser field coupling to the degenerate two-level system of cesium 6 2S_ 1/2(F=4)- 6 2P_ 3/2(F′=5) transition in a cesium vapor cell, electromagnetically induced absorption (EIA) has been demonstrated via probe absorption spectra, at the same time, electromagnetically induced transparency (EIT) of V-type three-level scheme has been demonstrated on the F=4-F′=3 and F=4-F′=4 transition frequency. The EIA is affected by the intensity and detuning of the coupling laser. By analyzing the effect of optical pumping between Zeeman sub-levels on the EIA and the coherent interactions between multiple degenerate two-level atoms, it is shown that the optical pumping affects the population of different Zeeman sub-levels and the number of the involved two-level atoms, the coherent time between the sub-levels is then changed and the linewidth and intensity of the EIA are affected accordingly.

Chinese Journal of Lasers•Jan 1, 2004•0 citations

Electromagnetically Induced Transparency in Λ-Type Zeeman Sublevels of Cesium Atoms

Tiancai Zhang

Employing two lasers as the coupling and probe fields which have opposite circular polarization (σ + and σ -), electromagnetically induced transparency (EIT) in Λ-type Zeeman sublevels of cesium 6 2S 1/2F=3-6 2P 3/2F′=2 degenerate two-level system has been demonstrated via probe absorption spectra. The effect of the intensity and detuning of different coupling. Laser on EII was also investigated in experiments. Within the Doppler background, optical pumping among Zeeman sub-levels and the population of different Zeeman sub-levels can dominate the intensity of EIT effect. And the physical reason of the rugged spectra are presented qualitatively.

Chinese Journal of Lasers•Jan 1, 2005•0 citations

Experimental investigation of absorption and dispersion in multi-V-type cesium atomic system

Jianming Zhao, Yanting Zhao, Lirong Wang +2 more

Electromagnetically induced transparency (EIT) is observed in a three-level multi-V-type system in cesium vapor at room temperature. The absorption and dispersion properties are measured under the condition that the coupling frequency is exactly resonance with transition 6S1/2(F=4) to 6P3/2(F'=3) while the probe frequency is scanned across the transitions from the 6S1/2(F=4) to all structures of the 6P3/2. The effects of the intensity of the pumping beam on EIT signal are investigated. The simple theory model was presented and the results of the experiment agree with the simple theoretical analysis.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Sep 11, 2002•0 citations

Electromagnetically induced transparency and absorption in a standing wave

C. Affolderbach, Svenja A. Knappe, R. Wynands +2 more

A thermal vapor of three-level atoms irradiated by two copropagating laser beams of suitable frequencies exhibits the phenomenon of coherent population trapping, leading to an electromagnetically induced transparency (EIT). When a mirror reflects the beams back onto themselves one finds that depending on the position along the resulting standing wave the fluorescence intensity from the sample (cesium in our case) decreases (EIT) or even increases [electromagnetically induced absorption (EIA)] with a period on the centimeter scale. An intuitive picture is based on the interference of coherent dark states but the explanation of the EIA effect requires consideration of Doppler effects in the thermal vapor. This allows for a quantitative comparison between experimental and calculated results.

Physical Review A•Mar 29, 2002•69 citations
The effect of pumping laser intensity on electromagnetically induced transparency (EIT) in the cesium atomic three-level system was investigated, and the EIT against double-pumping laser was obtained. The theoretical explanation was put forward using density matrix, and the experimental results is in agreement with theoretical calculation.
Abstract We experimentally studied the electromagnetically induced transparency (EIT) in cesium (Cs) vapors under a three-level V -configuration system. Two independent diode lasers were employed in locked and scanning mode, respectively, for pumping and probing the atomic media. A probe laser was scanned across 6 S 1/2 ( F = 4) to all subsutructures of 6 P 3/2 ( F ′ = 5 , F ′ = 4 and F ′ = 3 ) and the pump was locked at F ′ = 5 or F ′ = 4 or F ′ = 3 of 6 P 3/2 . A good agreement of the experimental results with theoretical simulations was observed. The intensity and magnetic field dependence of the EIT spectrum in a V -type system of Cs atoms was also studied.
In a Doppler-broadened ladder-type cesium atomic system (6S 1/2 -6P 3/2 -8S 1/2 ), this paper characterizes electromagnetically induced transparency (EIT) in two different experimental arrangements, and investigates the influence of the double-resonance optical-pumping (DROP) effect on EIT in both arrangements. When the probe laser is weak, DROP is explicitly suppressed. When the probe laser is moderate, population of the intermediate level (6P 3/2 F ' = 5) is remarkable, therefore DROP is mixed with EIT. An interesting bimodal spectrum with the broad component due to DROP and the narrow part due to EIT has been clearly observed in cesium 6S 1/2 F = 4−6P 3/2 F ' = 5−8S 1/2 F '' = 4 transitions.
Employing an intense laser field coupling to the degenerate two-level system of cesium 6 2S_ 1/2(F=4)- 6 2P_ 3/2(F′=5) transition in a cesium vapor cell, electromagnetically induced absorption (EIA) has been demonstrated via probe absorption spectra, at the same time, electromagnetically induced transparency (EIT) of V-type three-level scheme has been demonstrated on the F=4-F′=3 and F=4-F′=4 transition frequency. The EIA is affected by the intensity and detuning of the coupling laser. By analyzing the effect of optical pumping between Zeeman sub-levels on the EIA and the coherent interactions between multiple degenerate two-level atoms, it is shown that the optical pumping affects the population of different Zeeman sub-levels and the number of the involved two-level atoms, the coherent time between the sub-levels is then changed and the linewidth and intensity of the EIA are affected accordingly.
Employing two lasers as the coupling and probe fields which have opposite circular polarization (σ + and σ -), electromagnetically induced transparency (EIT) in Λ-type Zeeman sublevels of cesium 6 2S 1/2F=3-6 2P 3/2F′=2 degenerate two-level system has been demonstrated via probe absorption spectra. The effect of the intensity and detuning of different coupling. Laser on EII was also investigated in experiments. Within the Doppler background, optical pumping among Zeeman sub-levels and the population of different Zeeman sub-levels can dominate the intensity of EIT effect. And the physical reason of the rugged spectra are presented qualitatively.
Electromagnetically induced transparency (EIT) is observed in a three-level multi-V-type system in cesium vapor at room temperature. The absorption and dispersion properties are measured under the condition that the coupling frequency is exactly resonance with transition 6S1/2(F=4) to 6P3/2(F'=3) while the probe frequency is scanned across the transitions from the 6S1/2(F=4) to all structures of the 6P3/2. The effects of the intensity of the pumping beam on EIT signal are investigated. The simple theory model was presented and the results of the experiment agree with the simple theoretical analysis.
A thermal vapor of three-level atoms irradiated by two copropagating laser beams of suitable frequencies exhibits the phenomenon of coherent population trapping, leading to an electromagnetically induced transparency (EIT). When a mirror reflects the beams back onto themselves one finds that depending on the position along the resulting standing wave the fluorescence intensity from the sample (cesium in our case) decreases (EIT) or even increases [electromagnetically induced absorption (EIA)] with a period on the centimeter scale. An intuitive picture is based on the interference of coherent dark states but the explanation of the EIA effect requires consideration of Doppler effects in the thermal vapor. This allows for a quantitative comparison between experimental and calculated results.