In the video linked to below, we trap and cool all four stable isotopes of strontium (88, 87, 86, and finally 84) in quick succession. (The delay between isotopes is purely for the purposes of the video, and can be shortened considerably.)
Video of loading strontium isotopes
This capability will allow us to perform precision differential measurements of the isotope shifts of the strontium clock transition, and will also enable the use of both the bosonic 88-Sr and fermionic 87-Sr isotopes to characterize clock systematics in our apparatus.