PHOTOINDUCED TRANSFORMATIONS IN C-60 FILMS IRRADIATED BY FEMTOSECOND LASER-PULSES

Photoinduced polymerization and photoinduced diffusion of molecular ox ygen in thin C-60 films irradiated by femtosecond laser pulses are inv estigated. A comparison of the Raman scattering and absorbed energy sp ectra and the irradiation doses required to observe photopolymerizatio n using continuous-wave radiation and femtosecond pulses shows that th e efficiency of both photoinduced processes decreases considerably in the latter case. (C) 1998 American Institute of Physics. [S0021-3640(9 8)01416-9].