Analytical model of transit time broadening for two-photon excitation in a three-level ladder and its experimental validation

Bruvelis, M.; Ulmanis, Juris; Безуглов, Н. Н.; Miculis, K.; Andreeva, C.; Mahrov, B.; Tretyakov, D. B.; Экерс, А.

doi:10.1103/physreva.86.012501

Cited by 9 publications

(9 citation statements)

References 46 publications

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“…Although not shown, the shift cross-sections Based on the measured (1/e 2 ) beam waist (radii) w o at the cell entrance and cell temperatures of 373 K and 393 K. Two transit time models are used and we take the mean value with the error bar reaching the two different values. The first [46] accounts for the excited state lifetime, whereas the second [39] does not. Transit time broadening is calculated for the atom traversing the entire spatial content of the beam (i.e.…”

Section: Comparison Of Measured Cross-sections With Pseudopotential M...mentioning

confidence: 99%

Pressure broadening and frequency shift of the 5S_1/2→ 5D_5/2and 5S_1/2→ 7S_1/2two photon transitions in⁸⁵Rb by the noble gases and N₂

Zameroski¹,

Hager²,

Erickson³

et al. 2014

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

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Doppler free two photon absorption spectroscopy was employed to measure the pressure broadening and frequency shift rates of the 5S1/2 (F = 3) → 5D5/2 (F = 5, 4, 3, 2, 1) (778.105 nm) and the 5S1/2 (F = 2) → 7S1/2 (F = 2) (760.126 nm) two photon transitions in 85Rb by the noble gases and N2. To our knowledge, these rates are reported on for the first time. The self-broadening and shift rate of the 5S1/2 (F = 3) → 5D5/2 (F = 5, 4, 3, 2, 1) transition and self -broadening rate of the 5S1/2 (F = 2) → 7S1/2 (F = 2) transition were also measured. The temperature dependence of the self-frequency shift (Rb-Rb collisions) of these transitions is presented. Helium diffusion rates through Quartz and Pyrex cells are also calculated and the implication of helium diffusion through glass vapor cells is discussed in regards to atomic frequency standards based on these transitions. Experimental pressure broadening and shift rates are compared to theoretically calculated rates assuming a 6, 8 or 6, 8, 10 difference potential and pseudo potential model. Reasonable agreement is achieved between experimental and theoretical values.

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Section: Comparison Of Measured Cross-sections With Pseudopotential M...mentioning

confidence: 99%

Pressure broadening and frequency shift of the 5S_1/2→ 5D_5/2and 5S_1/2→ 7S_1/2two photon transitions in⁸⁵Rb by the noble gases and N₂

Zameroski¹,

Hager²,

Erickson³

et al. 2014

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

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“…This was verified with identical measurements on a conventional macroscopic cell at room temperature. The fiber core's confined geometry leads to transit-time broadening caused by short light-atom interaction times [22]. This effect was modeled using a four-level density matrix model which included a Maxwell-Boltzmann thermal velocity distribution which accounts for residual Doppler broadening; random atomic trajectories and the laser beam geometry [20] resulting in transit-time broadening; and splitting of the Zeeman sublevels which accounted for the observed magnetic field broadening.…”

Section: Ultimate Linewidthmentioning

confidence: 99%

High-resolution two-photon spectroscopy of rubidium within a confined geometry

et al. 2013

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We present two-photon spectroscopy of a thermal rubidium vapor confined to the hollow core of a photoniccrystal fiber. Linewidths as narrow as 10 MHz were observed on the 5S 1/2 → 5D 5/2 transition enabling the hyperfine splitting of the excited state to be resolved. Very strong nonlinear absorption (>90%) was observed, with substantial absorption maintained over large detunings (9 GHz) from an intermediate state. These attributes make this system ideal for many frequency metrology and quantum optics applications.

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“…6. Signal fading was taken into account by introducing the decay fitting function: ( ) exp( / ) ( ) [17] due to the escape of moving Xe atoms from the volume of the probe laser beam, turns out to be an order of magnitude larger. On the other hand, the magnitude of the applied magnetic field is not sufficient to obtain the fitting value L    = 1/100, necessary for the appearance of beats.…”

Section: Aggregated Signal ( ) I Tmentioning

confidence: 99%

Collapse of Xe polarized atomic states in magnetic fields

et al. 2021

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Ionization of two-photon excited states 5p 5 ( 2 P 3/2 )6p[ 3 / 2 , 5 / 2 ] 2 , M=2 (jl-coupling) of xenon atoms by circularly polarized probe light was studied experimentally in a supersonic beam. The observed photoionization signals revealed oscillation structure due to the Larmor precession of atomic states in an external magnetic field. We derived analytical formulas for the photoelectron current and explained the diversity in the structure of the detected oscillations in terms of the principal lines among multiplet components of optical transitions. The obtained numerical data demonstrate collapse and revival (beating) behavior of the photocurrent due to nonlinearity of Zeeman shifts in the presence of the Paschen-Back effect. Our results indicate the possibility of implementing Doppler-free spectroscopy involving bound-free transitions.

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Analytical model of transit time broadening for two-photon excitation in a three-level ladder and its experimental validation

Cited by 9 publications

References 46 publications

Pressure broadening and frequency shift of the 5S_1/2→ 5D_5/2and 5S_1/2→ 7S_1/2two photon transitions in⁸⁵Rb by the noble gases and N₂

Pressure broadening and frequency shift of the 5S_1/2→ 5D_5/2and 5S_1/2→ 7S_1/2two photon transitions in⁸⁵Rb by the noble gases and N₂

High-resolution two-photon spectroscopy of rubidium within a confined geometry

Collapse of Xe polarized atomic states in magnetic fields

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Analytical model of transit time broadening for two-photon excitation in a three-level ladder and its experimental validation

Cited by 9 publications

References 46 publications

Pressure broadening and frequency shift of the 5S1/2→ 5D5/2and 5S1/2→ 7S1/2two photon transitions in85Rb by the noble gases and N2

Pressure broadening and frequency shift of the 5S1/2→ 5D5/2and 5S1/2→ 7S1/2two photon transitions in85Rb by the noble gases and N2

High-resolution two-photon spectroscopy of rubidium within a confined geometry

Collapse of Xe polarized atomic states in magnetic fields

Contact Info

Product

Resources

About

Pressure broadening and frequency shift of the 5S_1/2→ 5D_5/2and 5S_1/2→ 7S_1/2two photon transitions in⁸⁵Rb by the noble gases and N₂

Pressure broadening and frequency shift of the 5S_1/2→ 5D_5/2and 5S_1/2→ 7S_1/2two photon transitions in⁸⁵Rb by the noble gases and N₂