Conductive coatings made from very thin functionalized (-NH
2
) multi-walled carbon nanotubes dispersed in a TiO
2
-based sol were irradiated with CO
2
laser using different intensities. It was observed that the electrical and optical properties of the film have changed. Laser-treated films present lower resistivity than the original non-irradiated coating. We attribute this behavior to a better densification of the nanotubes with the assist of the laser. Films irradiated with CO
2
presented a higher refractive index than non-irradiated coatings, showing the susceptibility of the films in optic-electronic devices.