Semiconductor inspection and metrology system using laser pulse multiplier

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United States of America Patent

PATENT NO 9793673
SERIAL NO

13487075

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Abstract

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A pulse multiplier includes a polarizing beam splitter, a wave plate, and a set of mirrors. The polarizing beam splitter receives an input laser pulse. The wave plate receives light from the polarized beam splitter and generates a first set of pulses and a second set of pulses. The first set of pulses has a different polarization than the second set of pulses. The polarizing beam splitter, the wave plate, and the set of mirrors create a ring cavity. The polarizing beam splitter transmits the first set of pulses as an output of the pulse multiplier and reflects the second set of pulses into the ring cavity. This pulse multiplier can inexpensively reduce the peak power per pulse while increasing the number of pulses per second with minimal total power loss.

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Patent Owner(s)

Patent OwnerAddress
KLA-TENCOR CORPORATIONONE TECHNOLOGY DRIVE MILPITAS CA 95035

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Armstrong, J Joseph Fremont, US 73 1791
Brown, David L Los Gatos, US 286 9247
Chuang, Yung-Ho Cupertino, US 87 2545
Dribinski, Vladimir Livermore, US 31 626
Liou, Justin Dianhuan Santa Clara, US 11 183

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