Bimorph piezo deformable mirror for femtosecond pulse shaping.

We have developed a bimorph piezoceramic deformable mirror with 28 independently controlled vertical sectors. When used in a reflective 2 f setup the mirror enables phase compensation in the range of a few hundred radians. We have demonstrated that such a compressor is able to compress femtosecond laser pulses that had been initially stretched by a factor of 60 close to their initial shape.