Patent ID: 8279903

Claim:
A method of laser-based device fabrication, comprising: irradiating a target material with ultrashort laser pulses; monitoring a pulse characteristic of the ultrashort pulses, and a condition of the target material, to obtain process information, wherein said pulse characteristic comprises at least one of an average output power, a pulse width, wavelength, repetition rate, polarization, temporal delay, temporal phase and spatial phase; modifying the pulse characteristic based on the process information, wherein the monitoring and modifying are carried out using ultrashort laser pulses directed downstream toward a material processing beam path for application to target material; and irradiating the target material with at least one ultrashort laser pulse having a modified pulse characteristic based on said process information, so as to modify said target material, wherein said method of device fabrication comprises active control of a laser-material interaction during fabrication of said device.