Lithographic apparatus and device manufacturing method
First Claim
1. A lithographic apparatus comprising:
- a beam splitter configured to split a radiation beam into a plurality of radiation beams;
a substrate stage configured to support a substrate;
a beam combiner adapted to redirect and combine at least a portion of the plurality of radiation beams to form an interference pattern on the substrate; and
a control unit in communication with the substrate stage and a radiation source configured to output the beam of radiation, the control unit configured to synchronize a motion of the substrate stage with a repetition rate at which the beam of radiation is output by the radiation source.
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Abstract
A lithographic apparatus is presented. The lithographic apparatus includes a beam splitter configured to split a radiation beam into a plurality of radiation beams; a substrate stage configured to support a substrate; a beam combiner adapted to redirect and combine at least a portion of the plurality of radiation beams to form an interference pattern on the substrate; and a control unit in communication with the substrate stage and a radiation source configured to output the beam of radiation, the control unit configured to synchronize a motion of the substrate stage with a repetition rate at which the beam of radiation is output by the radiation source.
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Citations
22 Claims
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1. A lithographic apparatus comprising:
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a beam splitter configured to split a radiation beam into a plurality of radiation beams; a substrate stage configured to support a substrate; a beam combiner adapted to redirect and combine at least a portion of the plurality of radiation beams to form an interference pattern on the substrate; and a control unit in communication with the substrate stage and a radiation source configured to output the beam of radiation, the control unit configured to synchronize a motion of the substrate stage with a repetition rate at which the beam of radiation is output by the radiation source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A lithographic apparatus comprising:
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a diffraction grating configured to create a plurality of radiation beams when the diffraction grating is impinged by a beam of radiation; a substrate stage configured to support a substrate; a beam combiner adapted to redirect and combine at least a portion of the plurality of radiation beams to form an interference pattern on a surface of the substrate; and a control unit in communication with the substrate stage and a radiation source configured to output the beam of radiation, the control unit configured to synchronize a motion of the substrate stage with a repetition rate at which the beam of radiation is outputted by the radiation source such that the substrate stage moves over an integral number of pitches of the interference pattern between two consecutive beams of radiation output by the radiation source.
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16. A device manufacturing method comprising:
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splitting a beam of radiation so as to form a plurality of radiation beams; redirecting and combining at least a portion of the plurality of radiation beams onto a substrate so as to form an interference pattern; and synchronizing a motion of a substrate table configured to support the substrate with a repetition rate at which the beam of radiation is output by a radiation source. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification