A laser spectroscopy system with combined absorption, polarization rotation and fluorescence detection to study two photon transitions in atomic rubidium

López-Hernández, O; Hernández-Gómez, Santiago; Ponciano-Ojeda, Francisco S.; Mojica-Casique, Cristian; Colín-Rodríguez, Ricardo; Flores-Mijangos, J.; Sahagún, Daniel; Ramírez-Martínez, F.; Jiménez-Mier, J.

doi:10.1016/j.jart.2015.09.006

Cited by 2 publications

(1 citation statement)

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“…Polarization effects in the interaction between multi-level atoms and two optical fields has also been studied in 85 Rb in a Λ type and a ladder type configuration [14]. Absorption, polarization rotation and the visible fluorescence that result from the decay of the excited states were also measured in Rb atom with a ladder configuration [15]. Cha et al [7] presented a two colour spectroscopy in a V-type configuration using the D 1 and D 2 transitions of Rubidium with co-propagating and counterpropagating geometry, but electromagnetically induced transparency (EIT) was not observed in the spectrum.…”

Section: Introductionmentioning

confidence: 99%

Polarization rotation with electromagnetically induced transparency in a V-type configuration of Rb D₁ and D₂ transitions

Das

Bhattacharyya³

et al. 2018

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

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Polarization rotation in electromagnetically induced transparency (PREIT) in rubidium vapour at room temperature has been studied experimentally as well as theoretically in the absence of any magnetic field. PREIT is observed for both 85Rb and 87Rb combining the D1 and the D2 transitions with a V-type configuration. For 85Rb, two EIT peaks and for 87Rb, one EIT peak were observed. Nonlinear characteristics of the variations of the angle of rotation corresponding to the EIT position were observed for both the isotopes of Rb. We have modelled a four level system to explain the occurrence of the double EIT in case of the 85Rb and the occurrence of one EIT peak for 87Rb. The rotation of plane of polarization of the probe beam can be further explained with this model. The characteristic behaviour of the variation of rotation corresponding to the EIT position from theoretical analysis has matched well with the experimental observations. A sharp rotation with a high signal to noise ratio in the vicinity of the EIT can be used as a modulation free and noise insensitive signal for the frequency stabilization.

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Section: Introductionmentioning

confidence: 99%

Polarization rotation with electromagnetically induced transparency in a V-type configuration of Rb D₁ and D₂ transitions

Das

Bhattacharyya³

et al. 2018

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

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Non-contact control of two-photon absorption

2017

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In this experimental work, we address the issue of the control of two-photon absorption in a Doppler broadened medium of Rb85 atoms under the ladder level coupling 5S→5P→5D. Here, suppression and enhancement of two-photon absorption are executed by applying an auxiliary laser beam, which is not physically propagating in the same line of the pump-probe combination. Instead, the auxiliary beam, which is in resonance with the Rb85 D transition, is at a finite distance from the line of propagation of the pump-probe combination. The resonant auxiliary beam produces an atomic beam in the vapor cell, and when it reaches the pump-probe path, it creates an asymmetry in the population of ground state hyperfine components. This asymmetry is responsible for controlling two-photon absorption. We present here results obtained by us along with a qualitative explanation of the physical principles behind the control mechanism.

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A laser spectroscopy system with combined absorption, polarization rotation and fluorescence detection to study two photon transitions in atomic rubidium

Cited by 2 publications

References 39 publications

Polarization rotation with electromagnetically induced transparency in a V-type configuration of Rb D₁ and D₂ transitions

Polarization rotation with electromagnetically induced transparency in a V-type configuration of Rb D₁ and D₂ transitions

Non-contact control of two-photon absorption

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A laser spectroscopy system with combined absorption, polarization rotation and fluorescence detection to study two photon transitions in atomic rubidium

Cited by 2 publications

References 39 publications

Polarization rotation with electromagnetically induced transparency in a V-type configuration of Rb D1 and D2 transitions

Polarization rotation with electromagnetically induced transparency in a V-type configuration of Rb D1 and D2 transitions

Non-contact control of two-photon absorption

Contact Info

Product

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About

Polarization rotation with electromagnetically induced transparency in a V-type configuration of Rb D₁ and D₂ transitions

Polarization rotation with electromagnetically induced transparency in a V-type configuration of Rb D₁ and D₂ transitions