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

Physical Review A

Electromagnetically induced inhibition of two-photon absorption in sodium vapor

Jin-Yue Gao, Suhui Yang, Dong Wang, Xiuzhen Guo, Kaixin Chen, Yun Jiang, Bin Zhao

Published Jan 4, 2000• 78 citations
Publisher

Abstract

We report the observation of the electromagnetically induced inhibition of two-photon absorption with atomic sodium vapor as a test medium. A 60% reduction of two-photon resonant absorption was recorded at the $3S\ensuremath{-}4D$ transition when a cw coupling laser was applied at the $3P\ensuremath{-}5S$ transition.

DOI
10.1103/physreva.61.023401

Related papers

Electromagnetically induced two-photon absorption reduction in sodium vapor

Jin-Yue Gao, Suhui Yang, Dong Wang +5 more

Summary form only given. It is well known that two-photon absorption can be greatly enhanced whenever a single photon energy approaches an allowed atomic transition. If more than one intermediate state exists, the two-photon absorption can be annihilated depending on the location of the intermediate states. In case there is only one intermediate state, a control laser can be applied to couple the intermediate state with other state to create two dressed states. Then, the medium can be made transparent against two-photon absorption in the presence of multiple pathways. We report the first observation of electromagnetically induced two-photon absorption reduction in sodium vapor.

Quantum Electronics and Laser Science Conference•Jan 20, 2003•0 citations

Resonant Enhancement of Two-Photon Absorption in Sodium Vapor

John E. Bjorkholm, P. F. Liao

Resonant enhancement of over 7 orders of magnitude of the two-photon absorption cross section is observed in sodium vapor. Two cw dye-laser beams of different frequencies and propagating in opposite directions are utilized to generate high-resolution spectra which allow the enhancement as well as destructive-interference effects of nearly resonant intermediate states to be clearly demonstrated.

Physical Review Letters•Jul 15, 1974•205 citations

Two-Photon Atomic Coherence Effect of Transition 5 S 1/2 −5 P 3/2 −4 D 5/2 (4 D 3/2 ) of 85 Rb atoms

Dong-Sheng Ding, Zhi‐Yuan Zhou, Bao‐Sen Shi +2 more

We experimentally observe the counterintuitive absorption peaks in the transition spectra of 5S 1/2 −5P 3/2 −4D 5/2 and 5S 1/2 −5P 3/2 −4D 3/2 in a hot 85 Rb vapor. These spectra are very different from the spectra observed via double resonance optical pumping or electromagnetically induced transparency in the same transitions. These absorption peaks are from electromagnetically induced absorption due to the two-photon atomic coherence effect. We also investigate the relations between these peaks and the powers of the coupling laser and the probe laser experimentally.

Chinese Physics Letters•Feb 1, 2012•4 citations

Direct Observation of Atomic Energy Level Shifts in Two-Photon Absorption

P. F. Liao, John E. Bjorkholm

We report direct observation of optically induced shifts of atomic energy levels in sodium vapor that occur in two-photon absorption. These shifts must be considered in high-resolution two-photon spectroscopy. Two cw dye laser beams of different frequencies and propagating in opposite directions are utilized to obtain high-resolution spectra. The intensity and frequency dependence of the level shifts are examined.

Physical Review Letters•Jan 6, 1975•174 citations

Control of two-photon absorption by using electromagnetic field in sodium and rubidium vapors

Dong Wang, Jin-Yue Gao, Ji-Hua Xu +2 more

We applied a pumping field to couple the middle level of two- photon absorption with the fourth level. Two-photon absorption minimum was observed. This is the first observation and experimental analysis of such phenomenon after it was predicted four years ago. In sodium vapor, two-photon absorption strength of 3S1/2(Fequals2)-3P3/2-4D3/2 was measured by detecting the fluorescence at 568.3 nm (4D3/2-3P1/2). Levels 3P3/2 and 5S1/2 were connected by pumping field. Experimental data of two-photon absorption strength vs detuning from middle level (TADM) shows that the two-photon absorption was reduced by 60% at line center in the presence of resonant pumping field. In rubidium vapor, two-photon absorption of 5S1/2(Fequals3)-5P3/2-8S1/2(Fequals3) was measured by detecting the fluorescence at 607 nm (8S1/2-5P1/2). Levels 5P3/2 and 5D5/2(Fequals5) were connected by pumping field. The TADM profiles under different experimental condition indicate that the maximum reduction of two-photon absorption can be 80%. And the reduction effect reduced with lower strength, higher detuning frequency and wider line width of pumping field. At the same time, the position of minimum absorption depends on the detuning of pumping field. All the experimental profiles were fitted well with theoretical calculation results.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Nov 13, 2001•0 citations

Observation of Two-Photon Absorption without Doppler Broadening on the 3S−5S Transition in Sodium Vapor

M. D. Levenson, N. Bloembergen

The $3S\ensuremath{-}5S$ transition of Na atoms is induced by absorption of two photons, one each from two circularly polarized beams traveling in opposite directions through the vapor. The beams are derived from a tunable, narrow-band pulsed dye laser. Doppler broadening is absent and the hyperfine structure is resolved. The hyperfine interaction constant ${A}_{5S}$ in the $5S$ state of the ${\mathrm{Na}}^{23}$ atom is determined to be 101\ifmmode\pm\else\textpm\fi{}15 MHz.

Physical Review Letters•Mar 25, 1974•285 citations
We report the observation of the electromagnetically induced inhibition of two-photon absorption with atomic sodium vapor as a test medium. A 60% reduction of two-photon resonant absorption was recorded at the 3S\ensuremath−4D3S\ensuremath{-}4D3S\ensuremath−4D transition when a cw coupling laser was applied at the 3P\ensuremath−5S3P\ensuremath{-}5S3P\ensuremath−5S transition.
Summary form only given. It is well known that two-photon absorption can be greatly enhanced whenever a single photon energy approaches an allowed atomic transition. If more than one intermediate state exists, the two-photon absorption can be annihilated depending on the location of the intermediate states. In case there is only one intermediate state, a control laser can be applied to couple the intermediate state with other state to create two dressed states. Then, the medium can be made transparent against two-photon absorption in the presence of multiple pathways. We report the first observation of electromagnetically induced two-photon absorption reduction in sodium vapor.
We experimentally observe the counterintuitive absorption peaks in the transition spectra of 5S 1/2 −5P 3/2 −4D 5/2 and 5S 1/2 −5P 3/2 −4D 3/2 in a hot 85 Rb vapor. These spectra are very different from the spectra observed via double resonance optical pumping or electromagnetically induced transparency in the same transitions. These absorption peaks are from electromagnetically induced absorption due to the two-photon atomic coherence effect. We also investigate the relations between these peaks and the powers of the coupling laser and the probe laser experimentally.
We applied a pumping field to couple the middle level of two- photon absorption with the fourth level. Two-photon absorption minimum was observed. This is the first observation and experimental analysis of such phenomenon after it was predicted four years ago. In sodium vapor, two-photon absorption strength of 3S1/2(Fequals2)-3P3/2-4D3/2 was measured by detecting the fluorescence at 568.3 nm (4D3/2-3P1/2). Levels 3P3/2 and 5S1/2 were connected by pumping field. Experimental data of two-photon absorption strength vs detuning from middle level (TADM) shows that the two-photon absorption was reduced by 60% at line center in the presence of resonant pumping field. In rubidium vapor, two-photon absorption of 5S1/2(Fequals3)-5P3/2-8S1/2(Fequals3) was measured by detecting the fluorescence at 607 nm (8S1/2-5P1/2). Levels 5P3/2 and 5D5/2(Fequals5) were connected by pumping field. The TADM profiles under different experimental condition indicate that the maximum reduction of two-photon absorption can be 80%. And the reduction effect reduced with lower strength, higher detuning frequency and wider line width of pumping field. At the same time, the position of minimum absorption depends on the detuning of pumping field. All the experimental profiles were fitted well with theoretical calculation results.
The $3S\ensuremath{-}5S$ transition of Na atoms is induced by absorption of two photons, one each from two circularly polarized beams traveling in opposite directions through the vapor. The beams are derived from a tunable, narrow-band pulsed dye laser. Doppler broadening is absent and the hyperfine structure is resolved. The hyperfine interaction constant A5S{A}_{5S}A5S​ in the 5S5S5S state of the Na23{\mathrm{Na}}^{23}Na23 atom is determined to be 101\ifmmode\pm\else\textpm\fi{}15 MHz.