A transportable optical lattice clock using 171 Yb

We present first results on the spectroscopy of the 1 S 0 → 3 P 0 transition at 578nm in a transportable 171 Yb optical lattice clock. With the Yb atoms confined in a one-dimensional optical lattice, we have observed linewidths below 200 Hz, limited by saturation broadening. Currently the system is being upgraded towards full clock operation and use of more compact and robust subsystems.