Extended Data Fig. 8: Interferometric stability of the pump arms.
From: Light-wave-controlled Haldane model in monolayer hexagonal boron nitride
The relative displacement between the ω − 2ω pump arms is recorded while a piezo closed-loop stage controlling the displacement is swept over a period of ten minutes. The position read out by the stage is compared to that extracted from an additional CW interferometer to estimate the error in displacement mapping. A standard deviation in drift of 38.1 nm corresponds to an angular jitter of 4.6° in the trefoil pump structure.
