METHODS AND APPARATUS FOR IMPROVING FLOW UNIFORMITY IN A PROCESS CHAMBER

    公开(公告)号:US20210249239A1

    公开(公告)日:2021-08-12

    申请号:US17167469

    申请日:2021-02-04

    Abstract: Embodiments of exhaust liner systems are provided herein. In some embodiments, an exhaust liner system for use in a process chamber includes a lower exhaust liner having an annular body with a central opening; an upper flange, a central flange, and a lower flange extending outward from the annular body, wherein the lower flange and the central flange partially define a first plenum, and wherein the central flange and the upper flange partially define a second plenum; a plurality of exhaust holes from the central opening to the first plenum; and at least one cutout in the central flange to provide a flow path from the first plenum to the second plenum, wherein the lower exhaust liner defines a gas flow path from the central opening to the first plenum via the plurality of exhaust holes and from the first plenum to the second plenum via the least one cutout.

    NON-CONTACT TEMPERATURE MEASUREMENT BY DUAL-WAVELENGTH SHIFT IN BREWSTER'S ANGLE

    公开(公告)号:US20170343424A1

    公开(公告)日:2017-11-30

    申请号:US15604317

    申请日:2017-05-24

    CPC classification number: G01K11/125

    Abstract: Embodiments disclosed herein relate to a thermal processing chamber having a substrate monitoring system. In one embodiment, a temperature monitoring system is disclosed herein. The temperature monitoring system includes a housing and a window defining an interior volume. The temperature monitoring system further includes two or more light sources, a camera, and a polarizer. The two or more light sources are disposed in the interior volume, beneath the window. A first light source of the two or more light sources has a first wavelength. A second light source of the two or more light sources has a second wavelength. A camera is disposed opposite the two or more light sources. The camera to captures a plurality of frames of two or more light beams received from the two or more light sources. The polarizer disposed in an optical path of the two or more light beams.

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