Electromagnetically induced absorption and transparency in magneto-optical resonances in an elliptically polarized field

Brazhnikov, D. V.; Tumaĭkin, A. M.; Yudin, V. I.; Taĭchenachev, A. V.

doi:10.1364/josab.22.000057

Cited by 33 publications

(23 citation statements)

References 61 publications

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“…This can be explained by destruction of the coherence of the excited state by collisions with the buffer gas. Spontaneous coherent transfer can be suppressed and CPT may be dominant because of the short lifetime of the excited state [20].…”

Section: Resultsmentioning

confidence: 99%

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Level-crossing absorption with narrow spectral width in Rb vapor with buffer gas

Lee

Bae

et al. 2010

Phys. Rev. A

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We present the transformation in the Hanle configuration of the transmission that results from coherent population trapping (CPT) into the level-crossing absorption (LCA) that results from the single-photon optical pumping in the 87 Rb D 1 line of a Rb vapor cell with a Ne buffer gas when the polarization of the laser field is changed from linear to circular. The LCA spectrum, with a narrow spectral width of 2.4 mG (1.7 kHz), was observed in the F g → F e F g transition with the circularly polarized laser. This may be because the LCA is both related to the transverse magnetic field and the atom-laser interaction time resulting from diffusive atomic motion in the cell with the buffer gas. The CPT and LCA spectra were calculated numerically using the full density matrix equations for the relevant magnetic sublevels of the hyperfine levels, considering the residual magnetic fields perpendicular to laser propagation and the collision effects resulting from the buffer gas. There was good qualitative agreement between theoretical and experimental results.

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Section: Resultsmentioning

confidence: 99%

“…EIA in the Hanle configuration has been investigated in the resonance on an F g → F e = F g + 1 transition using a pure atomic vapor cell [19][20][21]. Unlike EIT, EIA was explained by the atomic coherence between the degenerate excited levels transferring spontaneously to the degenerate ground levels [17].…”

Section: Introductionmentioning

confidence: 99%

Level-crossing absorption with narrow spectral width in Rb vapor with buffer gas

Lee

Bae

et al. 2010

Phys. Rev. A

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“…Such behavior of the EIA is different from EIT dependence as a function of the laser light ellipticity. Maximum of the EIT is always for linearly polarized light [5] regardless of the laser power.…”

Section: Resultsmentioning

confidence: 91%

“…Calculations of EIA profiles, for degenerate two-level system and for various combinations of linearly and circularly polarized probe and pump lasers, for different probe detuning were presented in [4]. Effect of ellipticity of the laser light on Hanle EIA was presented in [5] by an analytical solution of the model for F g = 1 −→ F e = 2 atomic transition. They show Doppler narrowing of the line widths for the same ellipticity, and narrowing with increased light ellipticity for the same Doppler width.…”

Section: Introductionmentioning

confidence: 99%

Effect of Laser Light Ellipticity on Hanle Electromagnetically Induced Absorption Amplitude and Line Width

et al. 2007

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Using the 2 S 1/2 Fg = 2 −→ 2 P 3/2 Fe = 3 transition in 87 Rb, we analyzed the interaction between the arbitrarily polarized laser light and Zeeman sublevels in the Hanle configuration. We studied theoretically and confirmed experimentally that the effect of the laser light polarization on the electromagnetically induced absorption strongly depends on the laser light power. For the same atomic transition, and for single laser light power (3 mW), it was recently shown that electromagnetically induced absorption line widths increase with polarization ellipticity and that electromagnetically induced absorption amplitude has maximum for certain laser light polarization different than linear. Here, we present results for amplitudes and widths of electromagnetically induced absorption for different laser light polarizations and for the laser light power ≤ 200 µW. It is verified that for small laser light power maximal electromagnetically induced absorption amplitude is for the linear polarization, whereas for larger power maximum of the electromagnetically induced absorption is at higher polarization ellipticity.

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“…However, it turns out that the EIA resonance is very sensitive to the cell buffering. It has been found [4] and recently confirmed [5] that if the cell containing alkali atoms is buffered by some noble gas, the resonance at the F g → F e = F g + 1 transitions transforms from EIA to EIT one. The resonance sign reversal has been attributed to the depolarization of the F e level by collisions of alkali atoms with the buffer gas atoms.…”

Section: Introductionmentioning

confidence: 86%

Electromagnetically Induced Absorption Resonance Sign Reversal

et al. 2007

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Electromagnetically induced absorption and transparency in magneto-optical resonances in an elliptically polarized field

Cited by 33 publications

References 61 publications

Level-crossing absorption with narrow spectral width in Rb vapor with buffer gas

Level-crossing absorption with narrow spectral width in Rb vapor with buffer gas

Effect of Laser Light Ellipticity on Hanle Electromagnetically Induced Absorption Amplitude and Line Width

Electromagnetically Induced Absorption Resonance Sign Reversal

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