High-speed optical three-axis vector magnetometry based on nonlinear Hanle effect in rubidium vapor

Azizbekyan, H.; Shmavonyan, Svetlana; Khanbekyan, Aleksandr; Movsisyan, Marina; Papoyan, A.

doi:10.1117/1.oe.56.7.074104

Cited by 9 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ability to control Hanle resonances from enhanced transmission to enhanced absorption make this a good technique for sensitive magnetometry 25 , 26 and control over group velocity 22 , 23 .…”

Section: Discussionmentioning

confidence: 99%

Tuning of the Hanle effect from EIT to EIA using spatially separated probe and control beams

Bhattarai

Bharti

Natarajan

2018

Sci Rep

View full text Add to dashboard Cite

We demonstrate a technique for continuous tuning of the Hanle effect from electromagnetically induced transparency (EIT) to electromagnetically induced absorption (EIA) by changing the polarization ellipticity of a control beam. In contrast to previous work in this field, we use spatially separated probe and control beams. The experiments are done using magnetic sublevels of the Fg = 4 → Fe = 5 closed hyperfine transition in the 852 nm D2 line of 133Cs. The atoms are contained in a room temperature vapor cell with anti-relaxation (paraffin) coating on the walls. The paraffin coating is necessary for the atomic coherence to be transported between the beams. The experimental results are supported by a density-matrix analysis of the system, which also explains the observed amplitude and zero-crossing of the resonances. Such continuous tuning of the sign of a resonance has important applications in quantum memory and other precision measurements.

show abstract

Section: Discussionmentioning

confidence: 99%

Tuning of the Hanle effect from EIT to EIA using spatially separated probe and control beams

Bhattarai

Bharti

Natarajan

2018

Sci Rep

View full text Add to dashboard Cite

show abstract

“…These dark and bright Hanle resonances are also known as the Hanle electromagnetically induced transparency and absorption [4]. The Hanle effect is extensively used for sensitive measurement of weak magnetic fields [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Double Hanle resonance dependence on light polarization angle and transverse magnetic field direction

Kumari,

Mehta,

Singh Grewal

et al. 2024

J. Opt.

View full text Add to dashboard Cite

We present experimental and theoretical investigations of the dependence of double Hanle resonance spectrum on the light polarization angle and the direction of the applied transverse magnetic field (TMF). The experiments are done for F g = 2 → F e = 1 transition of 87Rb D1 line using a rubidium vapor cell containing buffer gas. We show that a small light polarization component along the direction of TMF introduces asymmetry in the double Hanle resonance signal. Both the magnitude and sign of asymmetry in the signal are sensitive to the TMF orientation, suggesting a possible method for in-situ measurement of the direction of the magnetic fields generated by the coils. The physical origin of this asymmetry is explained by considering the redistribution of population among the ground-state Zeeman sublevels in the presence of TMF. In addition, we systematically vary both the polarization angle and TMF direction to study their effect on the line profile of Hanle resonances. We demonstrate that a double Hanle resonance changes to a dark Hanle resonance by rotating the light polarization vector irrespective of the TMF direction. We have developed a simple theoretical model based on a degenerate two-level system to explain our experimental observations.

show abstract

“…Another type is the non-modulated method [17]- [20]. A. Papoyan et al realized a three-axis vector magnetometry method based on the nonlinear Hanle effect which was operated in the unshielded condition [17], [18]. This method has a 0.5-1 µT B-field compensation resolution.…”

Section: Introductionmentioning

confidence: 99%

A Non-Modulated Triaxial Magnetic Field Compensation Method for Spin-Exchange Relaxation-Free Magnetometer Based on Zero-Field Resonance

Zhao

Liu

et al. 2019

IEEE Access

View full text Add to dashboard Cite

In this study, we demonstrate a non-modulated triaxial magnetic field compensation method for spin-exchange relaxation-free (SERF) atomic magnetometers. We realize simultaneous compensation of the magnetic field along the pump and probe directions by maximizing the first order differential value of the zero-field resonance signal. The magnetic field perpendicular to the pump-probe plane is compensated by zeroing the DC response of the magnetometer. The zero-field resonance is obtained by applying a linearly changed magnetic field along the direction perpendicular to that of the pump-probe plane. The first order differential of the zero-field resonance is acquired using the second order central difference method in real time. Compared with the conventional compensation methods, this method does not involve modulation and demodulation. Therefore, it requires no lock-in amplifier, thus making it more applicable in miniature atomic devices. Moreover, this method compensates the magnetic field along the pump and probe directions using only one criterion. It avoids the cross-talk effect between the pump and probe directions in the presence of non-orthogonal coils. The experiment results show that the compensation resolution is 9 pT, 7 pT and 0.05 pT for the probe, pump, and direction perpendicular to the pump-probe plane, respectively. INDEX TERMS Atomic magnetometer, cross-talk effect, magnetic field compensation, non-modulated, spin-exchange relaxation-free, zero-field resonance.

show abstract

High-speed optical three-axis vector magnetometry based on nonlinear Hanle effect in rubidium vapor

Cited by 9 publications

References 0 publications

Tuning of the Hanle effect from EIT to EIA using spatially separated probe and control beams

Tuning of the Hanle effect from EIT to EIA using spatially separated probe and control beams

Double Hanle resonance dependence on light polarization angle and transverse magnetic field direction

A Non-Modulated Triaxial Magnetic Field Compensation Method for Spin-Exchange Relaxation-Free Magnetometer Based on Zero-Field Resonance

Contact Info

Product

Resources

About