Role of transverse magnetic fields in electromagnetically induced absorption for elliptically polarized light

Dimitrijević, Jelena; Krmpot, Aleksandar J.; Mijailović, M.; Arsenović, D.; Panić, B.; Grujić, Zoran; Jelenković, Branislav

doi:10.1103/physreva.77.013814

Cited by 29 publications

(19 citation statements)

References 31 publications

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“…Therefore, no Hanle resonance was observed for F g = 2 → F e = 3 transition in the absence of the TMF [25]. Similar conditions (no "V " type links) can be obtained with a π polarized light in the transverse scan geometry (Fig.…”

Section: Experimental Descriptionsupporting

confidence: 59%

Magnetic field measurements in Rb vapor by splitting Hanle resonances under the presence of a perpendicular scanning magnetic field

Grewal

Pattabiraman

2016

Eur. Phys. J. D

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Abstract. We experimentally and computationally study the effect of an additional transverse magnetic field (TMF) on the Hanle resonance for a Fg = 2 → Fe = 3 transition of 87 Rb D2 line for magnetic field scans perpendicular to the propagation direction of the optical field. It is shown that with a π-polarized light, no resonance signal is observed in absence of the TMF. When the TMF is applied, two peaks are observed on either side of zero scanning magnetic field in the transmission spectrum. The separation between the two peaks is linearly proportional to magnitude of the TMF, which can be used for magnetometry. We applied this technique to measure magnetic field from 0.1 to 0.5 G with a pure Rb vapor cell and from 10 to 30 mG with a Rb cell containing buffer gas. These observations are attributed to the population redistribution among the ground state sublevels due to the TMF.

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Section: Experimental Descriptionsupporting

confidence: 59%

Magnetic field measurements in Rb vapor by splitting Hanle resonances under the presence of a perpendicular scanning magnetic field

Grewal

Pattabiraman

2016

Eur. Phys. J. D

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“…We have discussed in detail the case when all rank 2 multipole components, i.e., the longitudinal moment m 2,0 and the m = 1,2 coherences m 2,±1 and m 2,±2 , relax at the same rate. This case yields a particularly elegant mathematical expression (15) for the GSHE line shape in a field of arbitrary orientation.…”

Section: Discussionmentioning

confidence: 99%

“…Some authors model the complex spin structures occurring in alkalis in terms of three-or four-level systems [13,14], yielding analytical results that provide a qualitative description of the main resonance features. Another approach uses time consuming numerical calculations that take the complete spin structure and arbitrary light intensities into account [15,16]. However, the latter approach is not well suited to extract characteristic system parameters, such as relaxation rate(s), by data fitting procedures.…”

Section: A Scope Of the Present Workmentioning

confidence: 99%

Ground-state Hanle effect based on atomic alignment

Breschi

Weis

2012

Phys. Rev. A

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We have studied the ground-state Hanle effect (GSHE) excited by linearly polarized laser light on the D 1 line of cesium atoms. We have solved algebraically the Liouville equation using the irreducible tensor formalism, and derive an analytical expression for the resonance line shapes in a magnetic field of arbitrary direction. The model predictions are in excellent agreement with experimental observations in various field geometries. Our model is valid for arbitrary F → F transitions in the low-power limit. We discuss the relation between the GSHE and electromagnetically induced transparency or absorption. Our approach allows a full understanding of the mechanism of the GSHE and provides tools for quantifying the resonance contrast, a crucial parameter for metrological applications of level crossing resonances.

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“…The role played by transfer of coherence from the excited to the ground hyperfine state was also analyzed. Our previous work on phenomena of enhanced absorption includes the investigation of EIA amplitudes and linewidths as a function of different parameters, such as laser intensity, polarization and transverse magnetic fields [16]- [18].…”

Section: Introductionmentioning

confidence: 99%

Coherent processes in electromagnetically induced absorption: a steady and transient study

Dimitrijević¹,

Arsenović

Jelenković

2011

New J. Phys.

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Abstract. A perturbation method was used to solve optical Bloch equations (OBEs) for the transition F g = 1 → F e = 2, in order to describe the role of ground-level Zeeman coherences in the formation of electromagnetically induced absorption (EIA). A narrow Lorentzian peak, centered at zero value of the scanning magnetic field, appears in the analytical expression of the second-order correction of a density-matrix element for ground-level Zeeman coherences, (ρ g −1 ,g +1 ) x 2 . Through analytical expressions for lower-order corrections of density-matrix elements, we were able to establish clear relations between the narrow Lorentzian in (ρ g −1 ,g +1 ) x 2 and higher-order corrections of optical coherences, i.e. EIA. We see from analytical expressions that these two resonances have opposite signs and that EIA becomes electromagnetically induced transparency (EIT) in the limit of low efficiency of spontaneous transfer of coherences from excited-level to ground-level Zeeman sublevels. The transient behavior of EIA follows the time evolution of (ρ g −1 ,g +1 ) x 2 . After the coupling laser is turned on, both the Lorentzian peak in (ρ g −1 ,g +1 ) x 2 and EIA reach steady state via over-damped oscillations.

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Role of transverse magnetic fields in electromagnetically induced absorption for elliptically polarized light

Cited by 29 publications

References 31 publications

Magnetic field measurements in Rb vapor by splitting Hanle resonances under the presence of a perpendicular scanning magnetic field

Magnetic field measurements in Rb vapor by splitting Hanle resonances under the presence of a perpendicular scanning magnetic field

Ground-state Hanle effect based on atomic alignment

Coherent processes in electromagnetically induced absorption: a steady and transient study

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