@techreport{oai:nifs-repository.repo.nii.ac.jp:00009941, author = {"Mima, K. and Jovanovic, M.S. and Sentoku, Y. and Sheng, Z-M. and Skoric, M.M. and Sato, T."}, month = {Nov}, note = {"The propagation of a 1inearly polarized relativistic laser pulse in an underdense plasma is studied by fluid-Maxwell and PIC simulations. A nonlinear interplay between backward and forward stimulated Raman scattering instabilities produces a strong spatial modulation of the light pulse and the down-cascade in its frequency spectrum. The Raman cascade saturates by a unique photon condensation at the bottom of the light spectra near the electron plasma frequency, related to strong depletion and possible break-up of the laser beam. In the fina1 stage of the cascade-into-condensate mechanism, depleted downshifted laser pulse is gradually transformed into a train of ultra-short relativistic light solitons."}, title = {Stimulated Photon Cascade and Condensate in Relativistic Laser-plasma Interaction}, year = {2000} }