Radiant energy – Radiant energy generation and sources – With radiation modifying member
Reexamination Certificate
2011-03-29
2011-03-29
Nguyen, Kiet T (Department: 2881)
Radiant energy
Radiant energy generation and sources
With radiation modifying member
Reexamination Certificate
active
07915600
ABSTRACT:
An extreme ultra violet light source apparatus has a relatively high output for exposure and suppresses the production of debris as much as possible instead of disposing of debris that has been produced. The extreme ultra violet light source apparatus includes: a chamber in which extreme ultra violet light is generated; a target supply unit for supplying solid tin or lithium as a target to a predetermined position within the chamber; a CO2laser for applying a laser beam based on pulse operation to the target supplied by the target supply unit so as to generate plasma; and a collector mirror having a multilayer film on a reflecting surface thereof, for collecting the extreme ultra violet light radiated from the plasma to output the extreme ultra violet light.
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Björn A. Hansson et al., “LLP EUV Source Development for HVM”, SPIE, vol. 6151, No. 61510R, Feb. 2006.
Soumagne Georg
Sumitani Akira
Ueno Yoshifumi
Wakabayashi Osamu
Gigaphoton Inc.
Komatsu Ltd.
Nguyen Kiet T
Wenderoth , Lind & Ponack, L.L.P.
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