Electromagnetically-induced-transparency intensity-correlation power broadening in a buffer gas

Zheng, Aojie; Green, Alaina; Crescimanno, Michael; O'Leary, Shannon

doi:10.1103/physreva.93.043825

“…2b and c. We summarize our comparison between experiment and theory for EIT noise after a polarization basis change as follows: 1) Shift: For rotations of the QWP beyond 45 • , the metrologically relevant central peak of g (2) (0) is no longer at zero two-photon detuning. The direction and magnitude of the shift is well accounted for in the three level atomic model, [16,22]. For rotations of the post-cell quarter wave plate beyond its nominal 45 • orientation we show in Fig.…”

Section: Resultsmentioning

confidence: 90%

“…To ensure that a reproducible and stable splitting ∆ is only a function of current applied to the solenoid around the vapor cell, it is magnetically shielded from the surrounding environment by three nested layers of µ-metal magnetic shielding. (see [22] for more experimental details. )…”

Section: Methodsmentioning

confidence: 99%

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Electromagnetically induced transparency (EIT) amplitude noise spectroscopy

Whitenack

¹

,

Tormey

²

,

Crescimanno

³

et al. 2020

OSA Continuum

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Intensity noise cross-correlation of the polarization eigenstates of light emerging from an atomic vapor cell in the Hanle configuration allows one to perform high resolution spectroscopy with freerunning semiconductor lasers. This shows promise as an inexpensive and simpler approach to magnetometry and timekeeping, and as a probe of dynamics of atomic coherence in warm vapor cells. We report here that varying the post-cell polarization state basis yields intensity noise spectra which reveal details about the prepared atomic state. We advance and test the hypothesis that the observed intensity noise can be explained in terms of an underlying stochastic process in light field amplitudes themselves. Understanding this stochastic process in the light field amplitudes themselves provides an additional test of the three level system model of EIT noise.

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“…What's more, compared to the case without buffer gas, the velocity selective optical pump (VSOP) effects when the vapor cell filled with a buffer gas will disappear due to the pumping process overridden by velocity-changing. Therefore, the EIT resonance will grow up on a broaden Gaussian background, which simplifies the analysis of the spectra and supplies a good way for us to study the EIT splitting with a high resolution spectrum in a magnetic field [22].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetically induced transparency of⁸⁷Rb in a buffer gas cell with magnetic field

Cai

¹

,

Wang

²

,

Zhang

³

et al. 2017

J. Phys. B: At. Mol. Opt. Phys.

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We have studied the phenomenon of electromagnetically induced transparency (EIT) of 87 Rb vapor with a buffer gas in a magnetic field at room temperature. It is found that the spectral lines caused by the velocity selective optical pump effects get much weaker and wider when the sample cell mixed with a 5-Torr N2 gas while the EIT signal kept almost unchanged. A weighted least-square fit is also developed to remove the Doppler broadening completely. This spectral method provides a way to measure the Zeeman splitting with high resolution, for example, the Λ-type EIT resonance splits into four peaks on the D2 line of 87 Rb in the thermal 2-cm vapor cell with a magnetic field along the electric field of the linearly polarized coupling laser. The high resolution spectrum can be used to lock the laser to a given frequency by tuning the magnetic field.

show abstract

“…Therefore, the EIT resonance will grow up on a broaden Gaussian background, which simplifies the analysis of the spectra and supplies a good way for us to study the EIT splitting with a high resolution spectrum in a magnetic field [22].…”

Section: Introductionmentioning

confidence: 99%

High quality electromagnetically induced transparency spectroscopy of ⁸⁷ Rb in a buffer gas cell with a magnetic field

Cai

¹

,

Wang

²

,

Zhang

³

et al. 2017

View full text Add to dashboard Cite

We have studied the phenomenon of electromagnetically induced transparency (EIT) of 87 Rb vapor with a buffer gas in a magnetic field at room temperature. It is found that the spectral lines caused by the velocity selective optical pump effects get much weaker and wider when the sample cell mixed with a 5-Torr N2 gas while the EIT signal kept almost unchanged. A weighted least-square fit is also developed to remove the Doppler broadening completely. This spectral method provides a way to measure the Zeeman splitting with high resolution, for example, the Λ-type EIT resonance splits into four peaks on the D2 line of 87 Rb in the thermal 2-cm vapor cell with a magnetic field along the electric field of the linearly polarized coupling laser. The high resolution spectrum can be used to lock the laser to a given frequency by tuning the magnetic field.

show abstract

Electromagnetically-induced-transparency intensity-correlation power broadening in a buffer gas

Cited by 5 publications

References 30 publications

Electromagnetically induced transparency (EIT) amplitude noise spectroscopy

Electromagnetically induced transparency (EIT) amplitude noise spectroscopy

Electromagnetically induced transparency of⁸⁷Rb in a buffer gas cell with magnetic field

High quality electromagnetically induced transparency spectroscopy of ⁸⁷ Rb in a buffer gas cell with a magnetic field

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Electromagnetically-induced-transparency intensity-correlation power broadening in a buffer gas

Cited by 5 publications

References 30 publications

Electromagnetically induced transparency (EIT) amplitude noise spectroscopy

Electromagnetically induced transparency (EIT) amplitude noise spectroscopy

Electromagnetically induced transparency of87Rb in a buffer gas cell with magnetic field

High quality electromagnetically induced transparency spectroscopy of 87 Rb in a buffer gas cell with a magnetic field

Contact Info

Product

Resources

About

Electromagnetically induced transparency of⁸⁷Rb in a buffer gas cell with magnetic field

High quality electromagnetically induced transparency spectroscopy of ⁸⁷ Rb in a buffer gas cell with a magnetic field