Isotope shifts in dysprosium measured by high resolution laser spectroscopy

Using a pulsed dye laser, acting on a collimated atomic beam, the isotope shifts between the dysprosium isotopes 164, 162, and 160 were measured with high precision in three lines, $\text{λ=5547}\text{A}\text{?}$, $\text{λ=5640}\text{A}\text{?}$ and 5652 Å.