Patent ID: 9744618
Date: 2017-08-29
CPC Classifications: B23K,H01S

Claim:
1. A method for temporal pulse shaping of a laser beam used for laser shock processing of a workpiece, comprising: (1) determining at least one of a magnitude and depth of residual stress desired at one or more locations on the workpiece and selecting a pulse width and a temporal profile of the laser beam corresponding to the at least one of a magnitude of residual stress and depth of residual stress; (2) inputting the laser beam into a modulator; (3) generating a waveform from a waveform generator based on the selected pulse width and the selected temporal profile; (4) inputting the generated waveform into a high voltage driver to output a high voltage signal; (5) inputting the high voltage signal into the modulator to modulate and shape a temporal profile of the laser beam based on the selected pulse width and the selected temporal profile; (6) amplifying the modulated and shaped laser beam; and (7) delivering the amplified, modulated, and shaped laser beam to the one or more locations on the workpiece.