Methods of producing slanted gratings with variable etch depths

    公开(公告)号:US11226441B2

    公开(公告)日:2022-01-18

    申请号:US17072261

    申请日:2020-10-16

    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.

    METHODS FOR VARIABLE ETCH DEPTHS
    28.
    发明申请

    公开(公告)号:US20210351069A1

    公开(公告)日:2021-11-11

    申请号:US16871751

    申请日:2020-05-11

    Abstract: Methods of producing grating materials with variable height fins are provided. In one example, a method may include providing a mask layer atop a substrate, the mask layer including a first opening over a first processing area and a second opening over a second processing area. The method may further include etching the substrate to recess the first and second processing areas, forming a grating material over the substrate, and etching the grating material in the first and second processing areas to form a plurality of structures oriented at a non-zero angle with respect to a vertical extending from a top surface of the substrate.

    APPARATUS, SYSTEM AND TECHNIQUES FOR MASS ANALYZED ION BEAM

    公开(公告)号:US20200294755A1

    公开(公告)日:2020-09-17

    申请号:US16354638

    申请日:2019-03-15

    Abstract: An apparatus may include a housing including an entrance aperture, to receive an ion beam. The apparatus may include an exit aperture, disposed in the housing, downstream to the entrance aperture, the entrance aperture and the exit aperture defining a beam axis, extending therebetween. The apparatus may include an electrodynamic mass analysis assembly disposed in the housing and comprising an upper electrode assembly, disposed above the beam axis, and a lower electrode assembly, disposed below the beam axis. The apparatus may include an AC voltage assembly, electrically coupled to the upper electrode assembly and the lower electrode assembly, wherein the upper electrode assembly is arranged to receive an AC signal from the AC voltage assembly at a first phase angle, and wherein the lower electrode assembly is arranged to receive the AC signal at a second phase angle, the second phase angle 180 degrees shifted from the first phase angle.

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