APPARATUS FOR DULL FINISH OF ROLL WITH PULSE LASER.

摘要

When a continuous oscillation laser output is to be pulsed using a Q switch, a conventional method using the Q switch involves a problem in that when a frequency is changed, an oscillation excitation condition changes and a pulse waveform and a peak output change simultaneously so that dull finishing cannot be made stably. The process reduces oscillator loss of a laser oscillator at the OFF pulse time by lowering a high-frequency signal output to be applied to the Q switch and controls the pulse waveform to a range suitable for the dull finish of rolls. A satisfactory dull surface is obtd. in accordance with dull finishing.