EVOLUTION OF COHERENT HARD-X-RAY RADIATION GENERATED IN CRYSTALLINE SOLIDS BY HIGH-INTENSITY FEMTOSECOND LASER-PULSES

Recently [Phys. Rev. A 52, R21 (1995)] a process for coherent hard-x-r ay generation in crystalline solids was suggested by us. In the curren t work the theoretical treatment of this process is formulated in the language of nonlinear optics. An approximate solution of the coupled S chrodinger and Maxwell equations is presented that governs the creatio n and the evolution of the x-ray field. The theory generalizes our pre vious study by providing a description of the pulse evolution and of t he temporal shape of the x-ray pulse.