Oscillator-only micromachining in action. A train of femtosecond pulses from a laser oscillator is focused by a microscope objective into a thin glass sample.The bright blue spark is due to recombination of the electrons that are nonlinearly ionized by the pulses. Permanent structural changes are produced in the material at the laser focus.
No takes yet. Share an insight, caveat, or question.
Schaffer et al. (2001) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: