Stable laser light sources are necessary for atom interferometry based experiments on space platforms such as sounding rockets or satellites. Diode lasers, commonly used as light sources in these experiments, lack long term stability, therefore external frequency stabilization systems are required. Commonly used spectroscopy based systems require the correct optical atomic reference transition to be manually identified before analog circuits can start tracking this transition. For automated systems, latencies below 100 fis are required making the design of such systems challenging.
['Christian Spindeldreier', 'T. Wendrich', 'E. M. Rasel', 'W. Ertmer', 'Holger Blume']
FPGA-based frequency estimation of a DFB laser using Rb spectroscopy for space missions