Absorption of ultrashort intense lasers in laser–solid interactions*
Sheng Zheng-Minga),b),†, Weng Su-Minga), Yu Lu-Lea), Wang Wei-Minc), Cui Yun-Qianc), Chen Mina), Zhang Jiea)
Fig. 3. a Time evolution of layer displacements s #cod#x03C4; , the initial positions of these layers are indicated in degrees on the ordinate at the right; b the return velocity w l f as a function of the layer initial position.