Compressor Design for a 30fs-300J 10PW Ti:sapphire Laser - Divided-compressor with an Object-Image-Grating Self-tiling Tiled Grating Topics: High Intensity Lasers and High Field Phenomena In Proceedings of 2nd International Conference on Photonics, Optics and Laser Technology PHOTOPTICS - Volume 1, 191-195, 2014 , Lisbon, Portugal