Micro-integrated diode lasers for quantum optics experiments in space

Cold atom based quantum sensors are currently moving into the focus of various fields like precision time keeping, geodesy, geo-physics and exploration, navigation, and fundamental physics. For example, atom interferometers are considered for precision tests of the equivalence principle in space. The German Space Agency DLR is currently supporting activities that will lead to a Rubidium Bose-Einstein-condensate (BEC) onboard a sounding rocket in 2013.

As cold atom-based quantum sensors are moving out of quantum optics laboratories into the field or even to space, cold atom based quantum sensor technology has to mature. This talk will give an overview about the activities currently ongoing at the Ferdinand-Braun-Institute that are directed towards the development of the corresponding hybrid, micro-integrated, space compatible diode laser system technology.

I will present our latest results on micro-integrated diode laser systems and components, including narrow linewidth extended cavity diode lasers and high power master-oscillator-power-amplifier systems. Although this technology is currently being developed for 780 nm it is transferable to other wavelength from the near-infrared all the way down to the blue and deep-UV wavelength range. The presentation will further show how frequency-doubled diode laser technology has been micro-integrated at FBH. Finally, the talk will briefly outline activities at FBH that aim at integrating more functionality into the micro-integrated laser systems. This specifically refers to integration GaAs chip-based passive waveguide structures, phase-, and amplitude modulators and of SiO₂-based micro-resonators.