It was shown that the multi-pulse free-running ruby laser irradiation of z-cut monocrystalline samples (with 40nm-thick Ti deposits) resulted, under certain conditions, in efficient Ti in-diffusion; with minimum perturbation.

M.Dinescu, N.Chitica, C.Timus, I.N.Mihailescu, A.Andrei, G.Maiello, L.Schirone, A.Ferrari, M.Bertolotti: Journal of Applied Physics, 1993, 74[1], 24-30