Laser produced plasma light source having a target material coated on a cylindrically-symmetric element

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United States of America Patent

PATENT NO 11419202
APP PUB NO 20210136903A1
SERIAL NO

17146280

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Abstract

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The present disclosure is directed to laser produced plasma light sources having a target material, such as xenon, that is coated on the outer surface of a drum. Bearing systems rotate the drum that have structures for reducing leakage of contaminant material and/or bearing gas into the LPP chamber. Injection systems are disclosed for coating and replenishing target material on the drum. Wiper systems are disclosed for preparing the target material surface on the drum, e.g. smoothing the target material surface. Systems for cooling and maintaining the temperature of the drum and a housing overlying the drum are also disclosed.

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Patent Owner(s)

Patent OwnerAddress
KLA CORPORATIONMILPITAS CALIFORNIA 95035

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ahr, Brian San Jose, US 8 33
Chilese, Frank San Ramon, US 21 161
Garcia, Rudy F Union City, US 29 201
Khodykin, Oleg San Diego, US 24 328
Kuritsyn, Alexey San Jose, US 11 105

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