We have Raman cooled sodium atoms below the photon recoil temperature in a novel type of blue-detuned optical dipole force trap.In this trap 4.5×105 atoms have been cooled to an effective three dimensional temperature of 1.0 μK at a final density of 4×1011.No atoms were lost during the cooling process.The phase space density increased by a factor of 320 over the uncooled sample.This is the highest phase space density achieved by an all-optical cooling method.