Investigation of temperatures in a blue detuned three-dimensional optical lattice

Summary form only given. We have performed a detailed study of the steady-state temperature and other parameters in a three-dimensional optical lattice for a wide range of detunings. Specifically we have investigated the situation with the detuned blue light of a J-J transition, and configurations where several allowed transitions may influence the results. We load a chirp cooled Cs-beam into a magneto-optical trap, cool the atoms in an optical molasses and load them into a four-beam three-dimensional optical lattice. The lattice beams are detuned below the transition between the states 6s/sup 2/S/sub 1/2/, F=4 and 6p/sup 2/P/sub 3/2/, F´ =5, at 852 nm. The detuning is varied from -5/spl Gamma/ (where /spl Gamma//2/spl pi/=5.22 MHz is the natural linewidth of the transition) all the way to the F=4/spl rarr/F´=4 transition, located -48.3/spl Gamma/ away. For each detuning we let the atoms equilibrate in the lattice, and measure the steady-state temperature by a time of flight technique.