High resolution laser fluorescence spectroscopy in the deep blue spectral region

Grundevik, P.; Gustavsson, Mattias; Rosén, Arne; Svanberg, Sune

doi:10.1007/bf01418703

Cited by 15 publications

(5 citation statements)

References 9 publications

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“…III a comparison between the literature values and the newly determined values is shown. The total isotope shifts were found to be 41.935(60) MHz for the 6P 3/2 isotopes and 41.237(62) MHz for the 6P 1/2 isotopes, which agree well with the literature values [26,27]. With the determined hyperfine splitting values, the magnetic dipole constant A and the electric quadrupole constant B can be calculated for the 5S → 6P transitions.…”

Section: Discussionsupporting

confidence: 86%

Absolute frequency measurement of rubidium 5S-6P transitions

Glaser,

Karlewski,

Grimmel

et al. 2019

Preprint

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We report on measurements on the 5S-6P rubidium transition frequencies for rubidium isotopes with an absolute uncertainty of better than 450 kHz for the 5S → 6P 1/2 transition and 20 kHz for the 5S → 6P 3/2 transition, achieved by saturation absorption spectroscopy. From the results we derive the hyperfine splitting with an accuracy of 460 kHz and 30 kHz, respectively. We also verify the literature values for the isotope shifts as well as magnetic dipole constant and the electric quadrupole constant.

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Section: Discussionsupporting

confidence: 86%

Absolute frequency measurement of rubidium 5S-6P transitions

Glaser,

Karlewski,

Grimmel

et al. 2019

Preprint

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“…The data of the hyperfine splittings and isotope shifts for Rb [14,19,20], In [13,15], K [14,21,22], and Ga [13,15,23] are combined with our measurements to calculate the center-of-mass frequencies.…”

Section: Absolute Frequenciesmentioning

confidence: 99%

Comparison of resonance frequencies of major atomic lines in 398–423 nm

et al. 2016

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It has been highly developed along with the progress of next-generation atomic clocks in the visible frequency range, which require Hz-level stabilization of the laser [1]. Such an etalon is not expensive and can also be a convenient tool to determine absolute frequencies of lasers. For example, the absolute frequencies of water molecule lines near 790 nm have been accurately determined by using an ultralow-expansion etalon calibrated to the D 1 and D 2 lines of rubidium atoms [2,3]. To investigate many resonance lines spread in a span of a few tens of nanometer using such an etalon, the change of the free spectral range of the etalon due to the dispersion of the mirrors has to be taken into account.In this paper, we report high-resolution spectroscopy for transitions from the ground states of Ca, Rb, In, K, Ga, and Yb atoms in the 398-423 nm spectral range, using this kind of etalon for which small group-delay-dispersion (GDD) mirrors are attached. In this wavelength range the use of the etalon is especially efficient, since it is very difficult to directly measure laser frequencies with optical frequency combs for this range without using a frequency doubling system. The etalon resonance frequencies are calibrated to the absolute frequencies of Ca at 423 nm and Rb at 422 nm, whose uncertainties are less than 0.4 MHz [4,5]. Except these two atomic lines, the absolute frequencies of the atomic lines observed in this paper have not been determined precisely so far. Recent development of violet and blue laser diodes has promoted the spectroscopy of this spectral range, and thus, these atomic line data are of increasing importance. For example, these lines have been utilized for laser cooling, which essentially requires the stabilization of the laser frequency. Bose-Einstein condensates of Ca and Yb have been realized [6,7], and these lines observed in this study are the main cooling transitions. The cooling of In and Ga atomic Abstract We have demonstrated spectroscopy of Ca, Rb, In, K, Ga, and Yb atomic lines in 398-423 nm. Using an etalon of an ultralow-expansion coefficient, we have determined ratios of the resonance frequencies of these atoms. The etalon has small group-delay-dispersion mirrors to be an accurate frequency reference over a wavelength span of a few tens of nanometer. The etalon resonance frequencies are calibrated with accurately known transition frequencies of Ca at 423 nm and Rb at 422 nm. Based on this calibration, the absolute frequencies are also determined for some atomic lines with smaller uncertainties than earlier reports.

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“…Much experimental work has been done on measuring with high accuracy the absolute frequencies of various ground-state to singly-excited-state transitions in the two most prevalent rubidium isotopes, 85 Rb and 87 Rb [1][2][3][4][5][6][7]. In many cases, transition frequencies have been measured for both isotopes, allowing accurate determinations of the transition isotope shift.…”

mentioning

confidence: 99%

“…energies for the 85 Rb levels as extracted from Refs. [1][2][3][4][5][6][7], the isotopic masses from Ref. [20], and the remaining contribution due to the combined SMS and FS.…”

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confidence: 99%

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Experimental isotope shifts of the 5 2S1/2state and low-lying excited states of Rb

2011

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By combining a recent precise measurement of the ionization energy of 87 Rb with previous measurements of the ground-state hyperfine structure and ionization energy of 85 Rb, an accurate value for the 85 Rb-87 Rb isotope shift of the 5 2 S 1/2 ground state can be determined. In turn, comparison with additional spectroscopic data makes it possible to evaluate isotope shifts for the low-lying excited states, which are accurate in most cases to about 1 MHz. For the 5 2 S 1/2 and 5 2 P 3/2 states, the specific mass-shift contribution can be determined in addition to the total shift. This information is particularly useful for spectroscopic analysis of transitions to Rydberg states and for tests of atomic theory.

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High resolution laser fluorescence spectroscopy in the deep blue spectral region

Cited by 15 publications

References 9 publications

Absolute frequency measurement of rubidium 5S-6P transitions

Absolute frequency measurement of rubidium 5S-6P transitions

Comparison of resonance frequencies of major atomic lines in 398–423 nm

Experimental isotope shifts of the 5 2S1/2state and low-lying excited states of Rb

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