Autonomous frequency stabilization of two extended cavity diode lasers   at the potassium wavelength on a sounding rocket
  We have developed, assembled, and flight-proven a stable, compact, and autonomous extended cavity diode laser (ECDL) system designed for atomic physics experiments in space. To that end, two micro-integrated ECDLs at 766.7 nm were frequency stabilized during a sounding rocket flight by means of frequency modulation spectroscopy (FMS) of 39^K and offset locking techniques based on the beat note of the two ECDLs. The frequency stabilization as well as additional hard- and software to test hot redundancy mechanisms were implemented as part of a state-machine, which controlled the experiment completely autonomously throughout the entire flight mission. 
Aline N. Dinkelaker, Max Schiemangk, Vladimir Schkolnik, Andrew   Kenyon, Kai Lampmann, Andr\'e Wenzlawski, Patrick Windpass...
physics.atom-ph physics.ins-det