Observation of the ¹⁶²Dy-¹⁶⁴Dy Isotope Shift for the 0 → 16 717.79 cm^-1 Optical Transition

In this work, we report a newly observed isotope shift between ¹⁶²Dy and ¹⁶⁴Dy isotopes for the 0 → 16 717.79 cm^-1 (598.003 nm) optical transition. We compared the newly observed results against two other lines (597.452 nm and 598.859 nm), which we measured in this work, and were already reported in the literature. The newly observed 162-164 Dy isotope shift, shows at least a 20% larger isotope shift than the isotope shifts for the other two lines investigated. The larger 162-164 isotope shift observed for the 598.003 nm line could lead to an increased isotope selectivity for atomic vapor laser isotope separation (AVLIS). Hence, this line could be a good choice for application in AVLIS. Experimental data available in the literature for the 597.452 nm and 598.859 nm lines, enabled us to perform simulations of spectra for both lines, in order to confirm the accuracy of our experimental measurements.