Laser marking system and method using controlled pulse width of

Details Laser marking system and method using controlled pulse width of Laser marking system and method using controlled pulse width of

1995-11-16

1998-02-17

Walberg, Teresa J.

Electric heating

Metal heating

By arc

21912168, 21912169, 2191218, B23K 2600

Patent

active

057193720

ABSTRACT:
A laser marking system comprises a continuous-wave (CW) pumped Q-switch pulse laser and a laser controller. The Q-switch element switches on and off according to a repetition control signal received from the laser controller. The repetition control signal comprises an emission period in a repetition rate. The CW-pumped Q-switch pulse laser emits the laser beam through the Q-switch element during the emission period. The emission period or duty factor of the repetition control signal is adjusted such that the CW-pumped Q-switch pulse laser emits a pulse laser beam comprising a plurality of emission pulses during the emission period. The pulse laser beam is used to generate a scanning pulse laser beam which is focused on the workpiece to be marked in a desired pattern.

REFERENCES:
patent: 3657510 (1972-04-01), Rothrock
patent: 3836866 (1974-09-01), Ammann et al.
patent: 4630275 (1986-12-01), Rapoport
patent: 4922077 (1990-05-01), Gordon
patent: 4945204 (1990-07-01), Nakamura et al.
patent: 5227607 (1993-07-01), Ishiyama
patent: 5329090 (1994-07-01), Woelki et al.

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