Controlling pulses in a laser texturing tool

Details Controlling pulses in a laser texturing tool Controlling pulses in a laser texturing tool

1996-09-04

1998-11-03

Mackey, James P.

Plastic article or earthenware shaping or treating: apparatus

Means applying electrical or wave energy directly to work

Radiated energy

21912161, 21912168, 264400, 264482, 425385, G11B 584

Patent

active

058305149

ABSTRACT:
A disk texturing tool is used, for example, to provide textured spots in an annular portion of both sides of a hardfile disk. Disks are moved into and out of the texturing process in cassettes, through two disk-handling stations. Texturing occurs as the annular portions are exposed to a train of pulses from a Q-switched laser. The Q-switch within the laser is driven by a radio-frequency signal form an oscillator, which is in turn driven by a signal from a pulse generator, which can be adjusted to leave the radio-frequency signal on for a variable time between pulses without changing pulse frequency. The laser may be equipped with a shutter and with an electronic gate selectively preventing the production of laser pulses.

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Instruction Manual for Model 7300 Laser Systems, Spectra Physics, Mountain View, CA, 1990.

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