A. Ueda et al., WAVELENGTH-SELECTIVE LASER-ABLATION OF DIAMOND USING HYDROGEN-IMPURITY VIBRATION MODES, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 100(2-3), 1995, pp. 427-430
We have observed wavelength-dependent laser ablation of diamond films
demonstrating the C-H bond-stretching mode at 3.5 mu m, which is impor
tant in the early stages of photodamage. In particular, there is a sha
rp drop in the ablation threshold near 3.5 mu m. The measurements were
made with the Vanderbilt Free-Electron Laser (FEL). We also observed
the onset of morphological changes by using an atomic force microscope
(AFM).