arXiv:1103.2908 · Physical Review A

Isotope shift and hyperfine splitting of the 4s→5p transition in potassium

Alexandra Behrle, Marco Koschorreck, Michael Köhl

Published May 18, 2011• 12 citations

Abstract

We have investigated the $4s {}^{2}{S}_{1/2}\ensuremath{\rightarrow}5p {}^{2}{P}_{1/2}$ transition (${D}_{1}$ line) of the potassium isotopes $^{39}\mathrm{K}$, $^{40}\mathrm{K}$, and $^{41}\mathrm{K}$ using Doppler-free laser saturation spectroscopy. Our measurements reveal the hyperfine splitting of the $5p {}^{2}{P}_{1/2}$ state of $^{40}\mathrm{K}$, and we have determined the specific mass shift and the nuclear field shift constants for the blue (405 nm) ${D}_{1}$ line.

DOI: 10.1103/physreva.83.052507

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Isotope shifts and hyperfine splittings of the 3988-nm Yb i line

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Measurement of the 2 S 1 / 2 − 2 D 5 / 2 clock transition in a single 171 Yb + ion

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Physical Review AOct 1, 199959 citations

arXiv:1103.2908 · Physical Review A

Isotope shift and hyperfine splitting of the 4s→5p transition in potassium

Alexandra Behrle, Marco Koschorreck, Michael Köhl

Published May 18, 2011• 12 citations

arXiv HTML PDF

Abstract

We have investigated the

4s {}^{2}{S}_{1/2}\ensuremath{\rightarrow}5p {}^{2}{P}_{1/2}

transition (

{D}_{1}

line) of the potassium isotopes

^{39}\mathrm{K}

^{40}\mathrm{K}

, and

^{41}\mathrm{K}

using Doppler-free laser saturation spectroscopy. Our measurements reveal the hyperfine splitting of the

5p {}^{2}{P}_{1/2}

state of

^{40}\mathrm{K}

, and we have determined the specific mass shift and the nuclear field shift constants for the blue (405 nm)

{D}_{1}

line.

DOI: 10.1103/physreva.83.052507

Related papers

Spectroscopic study of the cycling transition 4s[3/2]2 – 4p[5/2]3 at 811.8 nm in Ar39 : Hyperfine structure and isotope shift

W. D. Williams, Zheng‐Tian Lu, Kenneth Rudinger +3 more

Doppler-free saturated absorption spectroscopy is performed on an enriched radioactive $^{39}\mathrm{Ar}$ sample. The spectrum of the $3{s}^{2}3{p}^{5}4s[3/2]{}_{2}$ -- $3{s}^{2}3{p}^{5}4p[5/2]{}_{3}$ cycling transition at 811.8 nm is recorded, and its isotope shift between $^{39}\mathrm{Ar}$ and $^{40}\mathrm{Ar}$ is derived. The hyperfine coupling constants $A$ and $B$ for both the $4s[3/2]{}_{2}$ and $4p[5/2]{}_{3}$ energy levels in $^{39}\mathrm{Ar}$ are also determined. The results partially disagree with a recently published measurement of the same transition. Based on earlier measurements as well as the current work, the isotope shift and hyperfine structure of the corresponding transition in $^{37}\mathrm{Ar}$ are also calculated. These spectroscopic data are essential for the realization of laser trapping and cooling of $^{37,39}\mathrm{Ar}$ .Doppler-free saturated absorption spectroscopy is performed on an enriched radioactive $^{39}\mathrm{Ar}$ sample. The spectrum of the $3{s}^{2}3{p}^{5}4s[3/2]{}_{2}$--$3{s}^{2}3{p}^{5}4p[5/2]{}_{3}$ cycling transition at 811.8 nm is recorded, and its isotope shift between $^{39}\mathrm{Ar}$ and $^{40}\mathrm{Ar}$ is derived. The hyperfine coupling constants $A$ and $B$ for both the $4s[3/2]{}_{2}$ and $4p[5/2]{}_{3}$ energy levels in $^{39}\mathrm{Ar}$ are also determined. The results partially disagree with a recently published measurement of the same transition. Based on earlier measurements as well as the current work, the isotope shift and hyperfine structure of the corresponding transition in $^{37}\mathrm{Ar}$ are also calculated. These spectroscopic data are essential for the realization of laser trapping and cooling of $^{37,39}\mathrm{Ar}$.

arXiv:1012.4509Physical Review AJan 24, 201112 citations

Isotope shift and hyperfine structure measurements of 4s 2S1/2→ 6s 2S1/2two-photon transition of potassium isotopes

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Isotope shifts and hyperfine structure of the laser-cooling Fe I 358-nm line

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arXiv:1711.04667Physical Review AMar 19, 201815 citations

Isotope shifts and hyperfine splittings of the 3988-nm Yb i line

K. Deilamian, John D. Gillaspy, Daniel E. Kelleher

We report the first observation to our knowledge of the 6s2 S10-6s6p P11∘ transition (398.8 nm) of 168Yb. The relative position of this spectral line was directly determined by using a laser sideband technique to simultaneously probe pairs of lines. The hyperfine structure of 171Yb and the isotope shifts of 170Yb, 171Yb, and 174Yb were determined to an accuracy of better than 6 MHz and found to differ by as much as 23 MHz from previous results. By using photon-burst spectroscopy to carry out these measurements we obtained subnatural linewidths and fully resolved the 170Yb and 171Yb lines, which otherwise overlap in fluorescence.We report the first observation to our knowledge of the 6s2 S10-6s6p P11∘ transition (398.8 nm) of 168Yb. The relative position of this spectral line was directly determined by using a laser sideband technique to simultaneously probe pairs of lines. The hyperfine structure of 171Yb and the isotope shifts of 170Yb, 171Yb, and 174Yb were determined to an accuracy of better than 6 MHz and found to differ by as much as 23 MHz from previous results. By using photon-burst spectroscopy to carry out these measurements we obtained subnatural linewidths and fully resolved the 170Yb and 171Yb lines, which otherwise overlap in fluorescence.

Journal of the Optical Society of America BMay 1, 199332 citations

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M. Roberts, P. Taylor, S. Gateva +3 more

Spectroscopy of the 411-nm transition in ${}^{171}{\mathrm{Yb}}^{+}$ has been performed and the feasibility of its use as an optical frequency standard has been demonstrated. The ${}^{2}{S}_{1/2}(F=0, {m}_{F}=0){--}^{2}{D}_{5/2}(F=2, {m}_{F}=0)$ frequency, at zero-magnetic field, has been measured to be 729 487 779 566(153) kHz. This transition is free from the first-order Zeeman shift and has a measured second-order shift of +0.38(8) Hz/(\ensuremath{\mu} ${\mathrm{T})}^{2}$ . In addition, the hyperfine structure of the ${}^{2}{D}_{5/2}$ level has been deduced by driving the other hyperfine components of the 411-nm transition, showing it to be inverted. The ${}^{2}{D}_{5/2}$ hyperfine splitting, measured to be -191(2) MHz, implies an A factor of -63.6(7) MHz. These data taken in conjunction with previous work yield an isotope shift of ${\ensuremath{\nu}}_{171}\ensuremath{-}{\ensuremath{\nu}}_{172}=+1317.1(1.3)\mathrm{MHz}$ for this transition between the 171 and 172 isotopes.Spectroscopy of the 411-nm transition in ${}^{171}{\mathrm{Yb}}^{+}$ has been performed and the feasibility of its use as an optical frequency standard has been demonstrated. The ${}^{2}{S}_{1/2}(F=0, {m}_{F}=0){--}^{2}{D}_{5/2}(F=2, {m}_{F}=0)$ frequency, at zero-magnetic field, has been measured to be 729 487 779 566(153) kHz. This transition is free from the first-order Zeeman shift and has a measured second-order shift of +0.38(8) Hz/(\ensuremath{\mu}${\mathrm{T})}^{2}$. In addition, the hyperfine structure of the ${}^{2}{D}_{5/2}$ level has been deduced by driving the other hyperfine components of the 411-nm transition, showing it to be inverted. The ${}^{2}{D}_{5/2}$ hyperfine splitting, measured to be -191(2) MHz, implies an A factor of -63.6(7) MHz. These data taken in conjunction with previous work yield an isotope shift of ${\ensuremath{\nu}}_{171}\ensuremath{-}{\ensuremath{\nu}}_{172}=+1317.1(1.3)\mathrm{MHz}$ for this transition between the 171 and 172 isotopes.

Physical Review AOct 1, 199959 citations

We have investigated the

4s {}^{2}{S}_{1/2}\ensuremath{\rightarrow}5p {}^{2}{P}_{1/2}

transition (

{D}_{1}

line) of the potassium isotopes

^{39}\mathrm{K}

^{40}\mathrm{K}

, and

^{41}\mathrm{K}

using Doppler-free laser saturation spectroscopy. Our measurements reveal the hyperfine splitting of the

5p {}^{2}{P}_{1/2}

state of

^{40}\mathrm{K}

, and we have determined the specific mass shift and the nuclear field shift constants for the blue (405 nm)

{D}_{1}

line.

Doppler-free saturated absorption spectroscopy is performed on an enriched radioactive

^{39}\mathrm{Ar}

sample. The spectrum of the

3{s}^{2}3{p}^{5}4s[3/2]{}_{2}

3{s}^{2}3{p}^{5}4p[5/2]{}_{3}

cycling transition at 811.8 nm is recorded, and its isotope shift between

^{39}\mathrm{Ar}

and

^{40}\mathrm{Ar}

is derived. The hyperfine coupling constants

A

and

B

for both the

4s[3/2]{}_{2}

and

4p[5/2]{}_{3}

energy levels in

^{39}\mathrm{Ar}

are also determined. The results partially disagree with a recently published measurement of the same transition. Based on earlier measurements as well as the current work, the isotope shift and hyperfine structure of the corresponding transition in

^{37}\mathrm{Ar}

are also calculated. These spectroscopic data are essential for the realization of laser trapping and cooling of

^{37,39}\mathrm{Ar}

We report on the measurement of the isotope shifts of the

3{d}^{7}4s\phantom{\rule{0.28em}{0ex}}a\phantom{\rule{0.28em}{0ex}}{}^{5}{F}_{5}\text{--}3{d}^{7}4p\phantom{\rule{0.28em}{0ex}}z\phantom{\rule{0.28em}{0ex}}{}^{5}{G}_{6}^{o}

Fe i line at 358 nm between all four stable isotopes

^{54}\text{Fe},\phantom{\rule{0.16em}{0ex}}^{56}\text{Fe},\phantom{\rule{0.16em}{0ex}}^{57}\text{Fe}

, and

^{58}\text{Fe}

, as well as the hyperfine structure of that line for

^{57}\text{Fe}

, the only stable isotope having a nonzero nuclear spin. This line is of primary importance for laser-cooling applications. In addition, an experimental value of the field and specific mass shift coefficients of the transition is reported as well as the hyperfine structure magnetic dipole coupling constant

A

of the transition excited state in

^{57}\text{Fe}

, namely

A(3{d}^{7}4p\phantom{\rule{0.28em}{0ex}}z\phantom{\rule{0.28em}{0ex}}{}^{5}{G}_{6}^{o})=31.241(48)

MHz. The measurements were carried out by means of laser-induced fluorescence spectroscopy performed on an isotope-enriched iron atomic beam. All measured frequency shifts are reported with relative uncertainties below one third percent.

We report on spectroscopic results on the $^{2}S_{1/2}\ensuremath{\rightarrow}\phantom{\rule{0.16em}{0ex}}^{2}P_{3/2}$ transition in single trapped

{\mathrm{Yb}}^{+}

ions. We measure the isotope shifts for all stable

{\mathrm{Yb}}^{+}

isotopes except

^{173}\mathrm{Yb}^{+}

, as well as the hyperfine splitting of the

^{2}P_{3/2}

state in

^{171}\mathrm{Yb}^{+}

. Our results are in agreement with previous measurements but are a factor of 5--9 more precise. For the hyperfine constant

A(^{2}P_{3/2})=875.4(10)\phantom{\rule{4pt}{0ex}}\mathrm{MHz}

our results also agree with previous measurements but deviate significantly from theoretical predictions. We present experimental results on the branching ratios for the decay of the

^{2}P_{3/2}

state. We find branching fractions for the decay to the

^{2}D_{3/2}

state and

^{2}D_{5/2}

state of 0.17(1)% and 1.08(5)%, respectively, in rough agreement with theoretical predictions. Furthermore, we measured the isotope shifts of the $^{2}F_{7/2}\ensuremath{\rightarrow}^{1}D{[5/2]}_{5/2}$ transition and determine the hyperfine structure constant for the

^{1}D{[5/2]}_{5/2}

state in

^{171}\mathrm{Yb}^{+}

to be $A(^{1}D{[5/2]}_{5/2})=\ensuremath{-}107(6)\phantom{\rule{4pt}{0ex}}\mathrm{MHz}$.

Spectroscopy of the 411-nm transition in

{}^{171}{\mathrm{Yb}}^{+}

has been performed and the feasibility of its use as an optical frequency standard has been demonstrated. The

{}^{2}{S}_{1/2}(F=0, {m}_{F}=0){--}^{2}{D}_{5/2}(F=2, {m}_{F}=0)

frequency, at zero-magnetic field, has been measured to be 729 487 779 566(153) kHz. This transition is free from the first-order Zeeman shift and has a measured second-order shift of +0.38(8) Hz/(\ensuremath{\mu}

{\mathrm{T})}^{2}

. In addition, the hyperfine structure of the

{}^{2}{D}_{5/2}

level has been deduced by driving the other hyperfine components of the 411-nm transition, showing it to be inverted. The

{}^{2}{D}_{5/2}

hyperfine splitting, measured to be -191(2) MHz, implies an A factor of -63.6(7) MHz. These data taken in conjunction with previous work yield an isotope shift of ${\ensuremath{\nu}}_{171}\ensuremath{-}{\ensuremath{\nu}}_{172}=+1317.1(1.3)\mathrm{MHz}$ for this transition between the 171 and 172 isotopes.