High harmonic generation in the relativistic limit (Nature Physics, 2006)

(untitled) - Dromey, B; Zepf, M; Gopal, A; Lancaster, K; Wei, MS; Krushelnick, K; Tatarakis, M; Vakakis, N; Moustaizis, S; Kodama, R; Tampo, M; Stoeckl, C; et al.