Method and tool for laser texturing of glass substrates
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United States of America Patent
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Jun 8, 1999
Grant Date -
N/A
app pub date -
Feb 6, 1997
filing date -
Feb 6, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method and apparatus for laser texturing symmetrically and simultaneously both sides of a glass containing substrate, such as a magnetic disk. There are two or more acousto-optic modulators arranged in series to obtain equal laser pulses from a first beam from a laser, apparatus for capturing a first order diffracted beam from each acousto-optic modulator; monitoring the wavelength of the laser source, providing a visible indicator or diagnostic bean for each first order diffracted beam, and combining each first order diffracted beam with its respective indicator beam to form a texturing beam for texturing each side of the substrate.
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