@misc{oai:repo.qst.go.jp:00066552, author = {ピロジコフ, アレキサンダー and 福田, 祐仁 and 西内, 満美子 and 匂坂, 明人 and 小倉, 浩一 and 桐山, 博光 and 森, 道昭 and Kanasaki, M and 近藤, 公伯 and 神門, 正城 and ピロジコフ アレキサンダー and 福田 祐仁 and 西内 満美子 and 匂坂 明人 and 小倉 浩一 and 桐山 博光 and 森 道昭 and 近藤 公伯 and 神門 正城}, month = {Apr}, note = {J-KAREN-P is a high-power laser facility aiming at the highest beam quality and highest intensity for performing state-of-the art experiments at the frontier of modern science. In this work we approached the physical limits of the beam quality: diffraction limit of the focal spot and bandwidth limit of the pulse shape. In particular, we have solved the following problems: chromatic aberration, wavefront distortion, angular chirp, and spectral phase distortion. We will show the parameters of the focal spot and the pulse shape, resulting in intensity of ~ 10^22 W/cm^2 at the 0.3 PW operation., The Optics & Photonics International Congress OPIC-2017, The 6th Advanced Lasers and Photon Sources Conference ALPS-2017}, title = {J-KAREN-P Laser Wavefront, Spot, and Pulse Shape}, year = {2017} }