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arXiv · 2306.11082

Absolute frequency measurements on the $5s5p^{3}$P$_{0}\to5s6d^{3}$D$_{1}$ transition in strontium

S. Zhang·B. T. Tiwari·S. Ganesh·Y. Singh·V. V. Flambaum
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Abstract

We report the first absolute frequency measurements for the $5s5p^{3}$P$_{0}\to5s6d^{3}$D$_{1}$ transition at 394 nm for all the stable strontium isotopes by utilizing repumping induced spectroscopy in a magneto-optical trap. Absolute transition frequency is measured to be 760524409251(25) kHz for $^{88}$Sr.With reference to $^{88}$Sr, the isotope shifts are measured to be 91052(35), 54600(33), and 51641(28) kHz for $^{84}$Sr, $^{86}$Sr, and $^{87}$Sr, respectively. We calculate the hyperfine constants A and B for the fermionic isotope $^{87}$Sr at kHz level. Furthermore, we perform King plot analysis by combining isotope shifts on the 689-nm transition to our data.

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S. Zhang, B. T. Tiwari, S. Ganesh, Y. Singh, V. V. Flambaum. 2023-06-19. Absolute frequency measurements on the $5s5p^{3}$P$_{0}\to5s6d^{3}$D$_{1}$ transition in strontium. https://doi.org/10.1103/physrevresearch.6.043106

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