A large aperture reflective wave-plate for high-intensity short-pulse   laser experiments
  We report on a reflective wave-plate system utilizing phase-shifting mirrors (PSM) for a continuous variation of elliptical polarization without changing the beam position and direction. The scalability of multilayer optics to large apertures and the suitability for high-intensity broad-bandwidth laser beams make reflective wave-plates an ideal tool for experiments on relativistic laser-plasma interaction. Our measurements confirm the preservation of the pulse duration and spectrum when a 30-fs Ti:Sapphire laser beam passes the system. 
Bastian Aurand, Christian R\"odel, Huanyu Zhao, Stephan Kuschel,   Martin W\"unsche, Oliver J\"ackel, Martin Heyer, Frank Wu...
physics.optics