Physical Review A

Pressure broadening and frequency shift of the D1 and D2 lines of Rb and K in the presence of 3 He and N 2

K. A. Kluttz, Todd D. Averett, Brian A. Wolin

Published Mar 25, 2013• 40 citations

Abstract

We report the results of a study of the pressure broadening and resonant frequency shift of the absorption profiles of the ${D}_{1}$ and ${D}_{2}$ lines of Rb and K in the presence of ${}^{3}$He and N${}_{2}$ gases over a range of number densities. We have also examined the temperature dependence of the broadening and shift over a range of approximately 340 to 400 K. We compare our results for the broadening and shift coefficients for Rb ${D}_{1}$ and ${D}_{2}$ to current values and present coefficients for K ${D}_{1}$ and ${D}_{2}$.

DOI: 10.1103/physreva.87.032516

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Pressure broadening of Rb D 1 and D 2 lines by 3 He, 4 He, N 2 , and Xe: Line cores and near wings

M. V. Romalis, E. Miron, G. D. Cates

Physical Review ADec 1, 1997208 citations

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Physical Review A

Pressure broadening and frequency shift of the D1 and D2 lines of Rb and K in the presence of 3 He and N 2

K. A. Kluttz, Todd D. Averett, Brian A. Wolin

Published Mar 25, 2013• 40 citations

Publisher

Abstract

We report the results of a study of the pressure broadening and resonant frequency shift of the absorption profiles of the

{D}_{1}

and

{D}_{2}

lines of Rb and K in the presence of

{}^{3}

He and N

{}_{2}

gases over a range of number densities. We have also examined the temperature dependence of the broadening and shift over a range of approximately 340 to 400 K. We compare our results for the broadening and shift coefficients for Rb

{D}_{1}

and

{D}_{2}

to current values and present coefficients for K

{D}_{1}

and

{D}_{2}

DOI: 10.1103/physreva.87.032516

Related papers

Pressure broadening of Rb D 1 and D 2 lines by 3 He, 4 He, N 2 , and Xe: Line cores and near wings

M. V. Romalis, E. Miron, G. D. Cates

We studied the line shape of Rb ${D}_{1}$ and ${D}_{2}$ resonance lines in the presence of 1--10 amg of several gases: ${}^{3}$ He, ${}^{4}$ He, N ${}_{2}$ , and Xe. We found that the line cores are well described by the asymmetric line shape expected for a van der Waals interatomic potential. The width and shift of the lines is proportional to the density of the foreign gas with high degree of accuracy, while the asymmetry is independent of the density. The constants of proportionality for pressure broadening and shift were measured with much higher accuracy than in previous experiments. We also studied the density dependence of the oscillator strength of the transitions.We studied the line shape of Rb ${D}_{1}$ and ${D}_{2}$ resonance lines in the presence of 1--10 amg of several gases: ${}^{3}$He, ${}^{4}$He, N${}_{2}$, and Xe. We found that the line cores are well described by the asymmetric line shape expected for a van der Waals interatomic potential. The width and shift of the lines is proportional to the density of the foreign gas with high degree of accuracy, while the asymmetry is independent of the density. The constants of proportionality for pressure broadening and shift were measured with much higher accuracy than in previous experiments. We also studied the density dependence of the oscillator strength of the transitions.

Physical Review ADec 1, 1997208 citations

Broadening of the Rb resonance lines by the noble gases

Ch. Ottinger, Richard Scheps, George W. York +1 more

Normalized emission spectra of the optically excited Rb resonance lines (7800 \AA{}, 7948 \AA{}) have been measured in the presence of He, Ne, Ar, Kr, and Xe for about 50 \AA{} on either side of the lines. The perturber gas pressures were in the range 100-1100 Torr and the temperature was 318 \ifmmode^\circ\else\textdegree\fi{}K. The spectra, normalized to the total emission, are shown to be due to binary collisions. Shifts and widths of the Lorentzian cores of the lines were obtained, at pressures sufficiently low for impact theory to apply. The widths are corrected for the Rb hfs and the instrument function. Various power-law fits to the near-wing intensities are presented and compared to theoretical expectations. The red satellites reported by other authors are found to be, in the low-pressure limit, mere shoulders on the line wing for Ar and Kr, while Xe barely produces an actual peak. The measured linewidths and shifts are compared to previous measurements.Normalized emission spectra of the optically excited Rb resonance lines (7800 \AA{}, 7948 \AA{}) have been measured in the presence of He, Ne, Ar, Kr, and Xe for about 50 \AA{} on either side of the lines. The perturber gas pressures were in the range 100-1100 Torr and the temperature was 318 \ifmmode^\circ\else\textdegree\fi{}K. The spectra, normalized to the total emission, are shown to be due to binary collisions. Shifts and widths of the Lorentzian cores of the lines were obtained, at pressures sufficiently low for impact theory to apply. The widths are corrected for the Rb hfs and the instrument function. Various power-law fits to the near-wing intensities are presented and compared to theoretical expectations. The red satellites reported by other authors are found to be, in the low-pressure limit, mere shoulders on the line wing for Ar and Kr, while Xe barely produces an actual peak. The measured linewidths and shifts are compared to previous measurements.

Physical Review AJun 1, 197576 citations

Pressure broadening and frequency shift of the D1 and D2 lines of K in the presence of Ne and Kr

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The European Physical Journal DFeb 1, 20185 citations

High-resolution measurement of the pressure broadening and shift of the Cs D1 and D2 lines by N2 and He buffer gases

A. Andalkar, Richard B. Warrington

We have measured the pressure broadening and shift of the cesium $D1$ (894 nm) and $D2$ (852 nm) lines by nitrogen and helium buffer gases at pressures of 0--160 Torr using high-resolution spectroscopy with tunable external-cavity diode lasers. This measurement has a precision of about 1%, which significantly improves upon previously published measurements for the Cs $D1$ and $D2$ lines in ${\mathrm{N}}_{2}$ and He buffer gases.We have measured the pressure broadening and shift of the cesium $D1$ (894 nm) and $D2$ (852 nm) lines by nitrogen and helium buffer gases at pressures of 0--160 Torr using high-resolution spectroscopy with tunable external-cavity diode lasers. This measurement has a precision of about 1%, which significantly improves upon previously published measurements for the Cs $D1$ and $D2$ lines in ${\mathrm{N}}_{2}$ and He buffer gases.

Physical Review AFeb 13, 200248 citations

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

Nathan D. Zameroski, Gordon D. Hager, Christopher Erickson +1 more

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.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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Frequency Shifts, Line Broadenings, and Phase-Interference Effects in Rb**+Rb Collisions, Measured by Doppler-Free Two-Photon Spectroscopy

Boris Peter Stoicheff, E. Weinberger

Self-broadenings and frequency shifts of ${n}^{2}S$ and ${n}^{2}D$ Rydberg levels (up to $n\ensuremath{\sim}70$) have been measured for rubidium in the pressure range of 3 to 100 mTorr, and the general dependence on principal quantum number $n$ has been established for this low-pressure regime. A closer examination has revealed large (almost evenly spaced) oscillations in the dependence of linewidth on principal quantum number for the $^{2}S$ levels in the region of largest linewidth ($n\ensuremath{\sim}20 \mathrm{to} 30$).Self-broadenings and frequency shifts of ${n}^{2}S$ and ${n}^{2}D$ Rydberg levels (up to $n\ensuremath{\sim}70$) have been measured for rubidium in the pressure range of 3 to 100 mTorr, and the general dependence on principal quantum number $n$ has been established for this low-pressure regime. A closer examination has revealed large (almost evenly spaced) oscillations in the dependence of linewidth on principal quantum number for the $^{2}S$ levels in the region of largest linewidth ($n\ensuremath{\sim}20 \mathrm{to} 30$).

Physical Review LettersMar 17, 198084 citations

We report the results of a study of the pressure broadening and resonant frequency shift of the absorption profiles of the

{D}_{1}

and

{D}_{2}

lines of Rb and K in the presence of

{}^{3}

He and N

{}_{2}

{D}_{1}

and

{D}_{2}

to current values and present coefficients for K

{D}_{1}

and

{D}_{2}

We studied the line shape of Rb

{D}_{1}

and

{D}_{2}

resonance lines in the presence of 1--10 amg of several gases:

{}^{3}

He,

{}^{4}

He, N

{}_{2}

, and Xe. We found that the line cores are well described by the asymmetric line shape expected for a van der Waals interatomic potential. The width and shift of the lines is proportional to the density of the foreign gas with high degree of accuracy, while the asymmetry is independent of the density. The constants of proportionality for pressure broadening and shift were measured with much higher accuracy than in previous experiments. We also studied the density dependence of the oscillator strength of the transitions.

We have measured the pressure broadening and shift of the cesium

D1

(894 nm) and

D2

(852 nm) lines by nitrogen and helium buffer gases at pressures of 0--160 Torr using high-resolution spectroscopy with tunable external-cavity diode lasers. This measurement has a precision of about 1%, which significantly improves upon previously published measurements for the Cs

D1

and

D2

lines in

{\mathrm{N}}_{2}

and He buffer gases.

Self-broadenings and frequency shifts of

{n}^{2}S

and

{n}^{2}D

Rydberg levels (up to $n\ensuremath{\sim}70$) have been measured for rubidium in the pressure range of 3 to 100 mTorr, and the general dependence on principal quantum number

n

has been established for this low-pressure regime. A closer examination has revealed large (almost evenly spaced) oscillations in the dependence of linewidth on principal quantum number for the

^{2}S

levels in the region of largest linewidth ($n\ensuremath{\sim}20 \mathrm{to} 30$).