Method of processing rock with laser and apparatus for the same
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United States of America Patent
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Sep 4, 2012
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N/A
app pub date -
Dec 18, 2007
filing date -
Jan 26, 2007
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Abstract
An object is to provide a method capable of boring a borehole even when quartz glass or silicon dioxide is deposited as molten dross by laser irradiation. A laser irradiation position of a workpiece is irradiated with a laser having wavelength of 1.2 μm or longer and a high factor of absorption into liquid, for example, a CO2 laser, from a laser oscillator through liquid. By high pressure generated in an advancing microbubble flow occurring in the liquid, molten dross is scattered. Thus, the processing, such as boring, of the rock is performed.
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