Optical component having depth modulated angled gratings and method of formation

    公开(公告)号:US10935799B2

    公开(公告)日:2021-03-02

    申请号:US16168185

    申请日:2018-10-23

    Abstract: A method of forming an optical grating component. The method may include providing a substrate, the substrate comprising an underlayer and a hard mask layer, disposed on the underlayer. The method may include patterning the hard mask layer to define a grating field and etching the underlayer within the grating field to define a variable height of the underlayer along a first direction, the first direction being parallel to a plane of the substrate. The method may include forming an optical grating within the grating field using an angled ion etch, the optical grating comprising a plurality of angled structures, disposed at a non-zero angle of inclination with respect to a perpendicular to a plane of the substrate, wherein the plurality of angled structures define a variable depth along the first direction, based upon the variable height of the underlayer.

    Methods of producing slanted gratings with variable etch depths

    公开(公告)号:US10823888B1

    公开(公告)日:2020-11-03

    申请号:US16681260

    申请日:2019-11-12

    Abstract: Methods of producing gratings with trenches having variable height are provided. In one example, a method of forming a diffracted optical element may include providing an optical grating layer over a substrate, patterning a hardmask over the optical grating layer, and forming a sacrificial layer over the hardmask, the sacrificial layer having a non-uniform height measured from a top surface of the optical grating layer. The method may further include etching a plurality of angled trenches into the optical grating layer to form an optical grating, wherein a first depth of a first trench of the plurality of trenches is different than a second depth of a second trench of the plurality of trenches.

    SYSTEM AND METHOD FOR DETECTING ETCH DEPTH OF ANGLED SURFACE RELIEF GRATINGS

    公开(公告)号:US20200158495A1

    公开(公告)日:2020-05-21

    申请号:US16240301

    申请日:2019-01-04

    Abstract: Optical grating components and methods of forming are provided. In some embodiments, a method includes providing an optical grating layer, and forming an optical grating in the optical grating layer, wherein the optical grating comprises a plurality of angled trenches disposed at a non-zero angle of inclination with respect to a perpendicular to a plane of the optical grating layer. The method may further include delivering light from a light source into the optical grating layer, and measuring at least one of: an undiffracted portion of the light exiting the optical grating layer, and a diffracted portion of the light exiting the optical grating layer.

    Controlling etch angles by substrate rotation in angled etch tools

    公开(公告)号:US10302826B1

    公开(公告)日:2019-05-28

    申请号:US15993135

    申请日:2018-05-30

    Abstract: Embodiments described herein relate to methods of forming gratings with different slant angles on a substrate and forming gratings with different slant angles on successive substrates using angled etch systems. The methods include positioning portions of substrates retained on a platen in a path of an ion beam. The substrates have a grating material disposed thereon. The ion beam is configured to contact the grating material at an ion beam angle ϑ relative to a surface normal of the substrates and form gratings in the grating material. The substrates are rotated about an axis of the platen resulting in rotation angles ϕ between the ion beam and a surface normal of the gratings. The gratings have slant angles ϑ′ relative to the surface normal of the substrates. The rotation angles ϕ selected by an equation ϕ=cos−1 (tan(ϑ′)/tan(ϑ)).

    IN-SITU ION BEAM ANGLE MEASUREMENT
    47.
    发明申请

    公开(公告)号:US20250069850A1

    公开(公告)日:2025-02-27

    申请号:US18236711

    申请日:2023-08-22

    Abstract: A processing system that includes an ion source to direct an ion beam at a workpiece, and an angle measurement system, is disclosed. The angle measurement system includes a current measurement device, such as one or more Faraday sensors, that may be moved in at least two orthogonal directions. The current measurement device scans in a first direction, seeking the largest current measurement. The current measurement device then moves to a second position in the second direction and repeats the scanning procedure. Based on data collected at two different locations in the second direction, the angle of incidence of the incoming ion beam may be determined.

    Variable Rotation Rate Batch Implanter
    50.
    发明公开

    公开(公告)号:US20230287561A1

    公开(公告)日:2023-09-14

    申请号:US17694028

    申请日:2022-03-14

    CPC classification number: C23C14/48 C23C14/505

    Abstract: A system comprising a spinning disk is disclosed. The system comprises a semiconductor processing system, such as a high energy implantation system. The semiconductor processing system produces a spot ion beam, which is directed to a plurality of workpieces, which are disposed on the spinning disk. The spinning disk comprises a rotating central hub with a plurality of platens. The spinning disk rotates about a central axis. The spinning disk is also translated linearly in a directional perpendicular to the central axis. The spot ion beam strikes the spinning disk at a distance from the central axis, referred to as the radius of impact. The rotation rate and the scan velocity may both vary inversely with the radius of impact.

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