Description
We present the status of our optical frequency reference based on Ramsey-Bord{\'e} interferometry using the $^1$S$_0$ $\rightarrow$ $^3$P$_1$ intercombination line in strontium. Next to the current state of the atom interferometer based on a thermal atomic beam, we will present details of our compact and high-flux atomic oven, the cavity-stabilised laser system at $689$~nm and outline the anticipated noise contributions and systematic shifts of the transition frequency.
This work is supported by the German Space Agency (DLR) with funds provided by the Federal Ministry of Economics and Technology (BMWi) under grant number DLR50WM1852 and by the German Federal Ministry of Education and Research within the program quantum technologies - from basic research to market under grant number 13N15725.
