High reproducible Co2 laser spliced fiber-collimator for a space borne laser system

Laser ranging interferometer on Grace follow-on

“…The OBA features an ultra-stable Fibre Injector Assembly (FIA) [10], the Fine Steering Mirror (FSM), the laser signal superposition (via beam splitter BS1), and imaging optics as well as the PRFs, which contain Quadrant Photo Diodes (QPDs). The key functions of the mentioned components are to avoidance of beam walk, avoidance of diffraction rings) The key requirements for the optical bench are low optical losses, low beam distortion, low sensitivity to thermal and rotational variations as well a precision beam angle measurements and beam steering.…”