POLARIZATION SELECTION METROLOGY SYSTEM, LITHOGRAPHIC APPARATUS, AND METHODS THEREOF

    公开(公告)号:US20230400782A1

    公开(公告)日:2023-12-14

    申请号:US18033530

    申请日:2021-10-14

    CPC classification number: G03F7/706849 G03F7/706845 G03F7/706847

    Abstract: An inspection system, a lithographic apparatus, and a method are provided. The inspection system includes an illumination system, an optical system, a shutter system, an objective system and a detector. The illumination system is configured to generate an illumination beam. The optical system is configured to split the illumination beam into a first sub-beam and a second sub-beam. The shutter system is configured to independently control a transmittance of the first sub-beam and the second subbeam. The objective system is configured to receive the first sub-beam and the second beam from the optical system and direct the first sub-beam and the second sub-beam towards a substrate having a target structure. The detector is configured to receive an image or a diffracted image of the target structure.

    SPECTROMETRIC METROLOGY SYSTEMS BASED ON MULTIMODE INTERFERENCE AND LITHOGRAPHIC APPARATUS

    公开(公告)号:US20230273531A1

    公开(公告)日:2023-08-31

    申请号:US18016225

    申请日:2021-06-29

    Abstract: A metrology system comprises a radiation source, an optical element, first and second detectors, an integrated optical device comprising a multimode waveguide, and a processor. The radiation source generates radiation. The optical element directs radiation toward a target to generate scattered radiation from the target. The first detector receives a first portion of the scattered radiation and generates a first detection signal based on the received first portion. The multimode waveguide interferes a second portion of the scattered radiation using modes of the multimode waveguide. The second detector receives the interfered second portion and generates a second detection signal based on the received interfered second portion. The processor receives the first and second detection signals. The processor analyzes the received first portion, the received interfered second portion, and a propagation property of the multimode waveguide. The processor determines the property of the target based on the analysis.

    OPTICAL APPARATUS AND LITHOGRAPHIC APPARATUS USING THE OPTICAL APPARATUS

    公开(公告)号:US20230185204A1

    公开(公告)日:2023-06-15

    申请号:US17910933

    申请日:2021-03-16

    CPC classification number: G03F7/70633 G03F7/70825 G03F9/7046

    Abstract: An optical apparatus and a lithographic apparatus including the optical apparatus. The optical apparatus includes a substrate having an aperture for passing light; a transmissive optical element covering the aperture of the substrate; and an optical contact bond between the substrate and transmissive optical element, the optical contact bond being spaced from the aperture a sufficient distance such that stress forces in the transmissive optical element from the optical contact bond to the aperture are below an acceptable stress threshold. The optical contact bond geometry herein, for example, minimizes a contact area and provides a quasi-kinematic (near-exactly constrained) interface between the substrate and the optical element.

    LITHOGRAPHIC APPARATUS AND METHOD FOR DRIFT COMPENSATION

    公开(公告)号:US20230035511A1

    公开(公告)日:2023-02-02

    申请号:US17791641

    申请日:2021-01-04

    Abstract: A system, method, a lithographic apparatus and a software product configured to determine a drift in an attribute of an illumination and a corresponding drift correction. The system includes a lithographic apparatus that includes at least two sensors, each configured to measure a property related to an illumination region provided for imaging a substrate. Furthermore, a processor is configured to: determine, based on a ratio of the measured property, a drift of the illumination region with respect to a reference position; determine, based on the drift of the illumination region, a drift in an attribute related to the illumination upstream of the illumination region measured by the at least two sensors, and determine, based on the drift in the attribute, the drift correction to be applied to the attribute to compensate for the drift in the attribute.

    SYSTEMS AND METHODS FOR MANUFACTURING A DOUBLE-SIDED ELECTROSTATIC CLAMP

    公开(公告)号:US20230021360A1

    公开(公告)日:2023-01-26

    申请号:US17790341

    申请日:2020-12-04

    Abstract: Systems, apparatuses, and methods are provided for manufacturing an electrostatic clamp. An example method can include forming, during a first duration of time comprising a first time, a top clamp comprising a first set of electrodes and a plurality of burls. The method can further include forming, during a second duration of time comprising a second time that overlaps the first time, a core comprising a plurality of fluid channels configured to carry a thermally conditioned fluid. The method can further include forming, during a third duration of time comprising a third time that overlaps the first time and the second time, a bottom clamp comprising a second set of electrodes. In some aspects, the example method can include manufacturing the electrostatic clamp without an anodic bond.

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