Continuous operation of a bicolor thulium optical lattice clock

We discuss the extension of a recently proposed method based on continuous spectroscopy of 88Sr atoms trapped in a moving optical lattice [Appl. Phys. Express, 14, 072 006 (2021)] to the operation of bicolor thulium optical clocks. Simultaneous interrogation of two clock transitions at 1.14 μm and build-up of a synthetic frequency provides a straightforward way to significantly suppress the first-order Doppler shift and cancel out the...