Laser initiated chain reactions for producing a sintered product

Details Laser initiated chain reactions for producing a sintered product Laser initiated chain reactions for producing a sintered product

1987-08-11

1988-10-18

Lindsay, Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 17, 20415722, 20415761, 423337, 423344, C03B 3708, B01J 1912

Patent

active

047785004

ABSTRACT:
A laser initiated process generates a shock wave of sufficient strength to produce a sintered product. The sintered product is prepared from at least a fuel and an oxidizer that will sustain an explosion in a reaction vessel. The explosion is initiated by introducing a laser beam into the reaction vessel and a shock wave begins to propagate at the point where the explosion is initiated. A sintered product is prepared when the shock wave is sufficiently strong to densify the product. Although the reaction will proceed using a two-component fuel-oxidizer mixture, the reaction is especially useful for producing sintered doped or undoped silicon dioxide (SiO.sub.2) from a reaction mixture containing at least silicon tetrachloride, hydrogen and oxygen. The sintered SiO.sub.2 can be deposited on a deposition surface situated in the reaction vessel to produce a preform that can be processed to produce an optical fiber.

REFERENCES:
patent: 4108964 (1978-08-01), Kratel et al.
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patent: 4343687 (1982-08-01), Ronn
patent: 4347069 (1982-08-01), Haney et al.
patent: 4548798 (1985-10-01), Rice
patent: 4558017 (1985-12-01), Gupta et al.

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