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公开(公告)号：US20230280660A1
公开(公告)日：2023-09-07
申请号：US18196108
申请日：2023-05-11
发明人： Sebastian Thomas BAUERSCHMIDT , Peter Maximilian GÖTZ , Patrick Sebastian UEBEL , Ronald Franciscus Herman HUGERS , Jan Adrianus BOER , Edwin Johannes Cornelis BOS , Andreas Johannes Antonius BROUNS , Vitaliy PROSYENTSOV , Paul William SCHOLTES - VAN EIJK , Paulus Antonius Andreas TEUNISSEN , Mahesh Upendra AJGAONKAR
CPC分类号： G03F7/70625 , G02B1/005 , G02B6/02 , G03F7/7065 , G01B11/27 , G01J1/4257 , G03F7/70525 , G01M11/30
摘要： A mode control system and method for controlling an output mode of a broadband radiation source including a photonic crystal fiber (PCF). The mode control system includes at least one detection unit configured to measure one or more parameters of radiation emitted from the broadband radiation source to generate measurement data, and a processing unit configured to evaluate mode purity of the radiation emitted from the broadband radiation source, from the measurement data. Based on the evaluation, the mode control system is configured to generate a control signal for optimization of one or more pump coupling conditions of the broadband radiation source. The one or more pump coupling conditions relate to the coupling of a pump laser beam with respect to a fiber core of the photonic crystal fiber.
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公开(公告)号：US20210240088A1
公开(公告)日：2021-08-05
申请号：US17213983
申请日：2021-03-26
IPC分类号： G03F7/20
摘要： Disclosed is a metrology apparatus for use in a lithographic manufacturing process. The metrology apparatus comprises a radiation source comprising a drive laser having an output split into a plurality of optical paths, each comprising a respective broadband light generator. The metrology apparatus further comprises illumination optics for illuminating a structure, at least one detection system for detecting scattered radiation, having been scattered by the structure and a processor for determining a parameter of interest of the structure from the scattered radiation.
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公开(公告)号：US20230144419A1
公开(公告)日：2023-05-11
申请号：US18085338
申请日：2022-12-20
发明人： John Colin TRAVERS , Federico BELLI , Malte Christian BRAHMS , Andreas Johannes Antonius BROUNS , Ronald Franciscus Herman HUGERS
CPC分类号： H01S3/06741 , G02F1/3528 , G02B6/02328 , G03F7/70625
摘要： A broadband radiation source device, including a fiber assembly having a plurality of optical fibers, each optical fiber being filled with a gas medium, wherein the broadband radiation source device is operable such that subsets of the optical fibers are independently selectable for receiving a beam of input radiation so as to generate a broadband output from only a subset of the plurality of optical fibers at any one time.
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公开(公告)号：US20210063900A1
公开(公告)日：2021-03-04
申请号：US16995993
申请日：2020-08-18
摘要： An assembly for collimating broadband radiation, the assembly including: a convex refractive singlet lens having a first spherical surface for coupling the broadband radiation into the lens and a second spherical surface for coupling the broadband radiation out of the lens, wherein the first and second spherical surfaces have a common center; and a mount for holding the convex refractive singlet lens at a plurality of contact points having a centroid coinciding with the common center.
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公开(公告)号：US20200264521A1
公开(公告)日：2020-08-20
申请号：US16789816
申请日：2020-02-13
IPC分类号： G03F7/20
摘要： Disclosed is a metrology apparatus for use in a lithographic manufacturing process. The metrology apparatus comprises a radiation source comprising a drive laser having an output split into a plurality of optical paths, each comprising a respective broadband light generator. The metrology apparatus further comprises illumination optics for illuminating a structure, at least one detection system for detecting scattered radiation, having been scattered by the structure and a processor for determining a parameter of interest of the structure from the scattered radiation.
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公开(公告)号：US20180373171A1
公开(公告)日：2018-12-27
申请号：US16061947
申请日：2016-11-30
发明人： Ronald Franciscus Herman HUGERS , Martinus Cornelis REIJNEN , Paulus Antonius Andreas TEUNISSEN
摘要： A topography measurement system includes a radiation source; a first grating; imaging optics; a movement mechanism; detection optics; a second grating; and a detector. The radiation source is configured to generate a radiation beam and includes a light emitting diode to produce to the radiation. The first grating is configured to pattern the radiation beam. The imaging optics is configured to form a first image of the first grating at a target location on a substrate. The movement mechanism is operable to move the substrate relative to the image of the first grating such that the target location moves relative to the substrate. The detection optics is configured to receive radiation from the target location of the substrate and form an image of the first image at the second grating. The detector is configured to receive radiation transmitted through the second grating and produce an output signal.
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公开(公告)号：US20220069537A1
公开(公告)日：2022-03-03
申请号：US17460430
申请日：2021-08-30
发明人： John Colin TRAVERS , Federico BELLI , Malte Christian BRAHMS , Andreas Johannes Antonius BROUNS , Ronald Franciscus Herman HUGERS
摘要： A broadband radiation source device, including a fiber assembly having a plurality of optical fibers, each optical fiber being filled with a gas medium, wherein the broadband radiation source device is operable such that subsets of the optical fibers are independently selectable for receiving a beam of input radiation so as to generate a broadband output from only a subset of the plurality of optical fibers at any one time.
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公开(公告)号：US20210063894A1
公开(公告)日：2021-03-04
申请号：US17004140
申请日：2020-08-27
发明人： Sebastian Thomas BAUERSCHMIDT , Peter Maximilian GÖTZ , Patrick Sebastian UEBEL , Ronald Franciscus Herman HUGERS , Jan Adrianus BOER , Edwin Johannes Cornelis BOS , Andreas Johannes Antonius BROUNS , Vitaliy PROSYENTSOV , Paul William SCHOLTES - VAN EIJK , Paulus Antonius Andreas TEUNISSEN , Mahesh Upendra AJGAONKAR
摘要： A mode control system and method for controlling an output mode of a broadband radiation source including a photonic crystal fiber (PCF). The mode control system includes at least one detection unit configured to measure one or more parameters of radiation emitted from the broadband radiation source to generate measurement data, and a processing unit configured to evaluate mode purity of the radiation emitted from the broadband radiation source, from the measurement data. Based on the evaluation, the mode control system is configured to generate a control signal for optimization of one or more pump coupling conditions of the broadband radiation source. The one or more pump coupling conditions relate to the coupling of a pump laser beam with respect to a fiber core of the photonic crystal fiber.
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公开(公告)号：US20190049864A1
公开(公告)日：2019-02-14
申请号：US16078699
申请日：2017-02-07
摘要： A light combiner (500) for use in a metrology tool includes a plurality of light sources (LED 1, LED 2, LED 3, LED 4, LED 5), a first filter (502), and a second filter (504). The first filter is designed to substantially reflect light generated from a first source of the plurality of light sources, and to substantially transmit light generated from a second source of the plurality of light sources. The second filter is designed to substantially reflect light generated from the first source and the second source of the plurality of light sources, and to substantially transmit light generated from a third source of the plurality of light sources. An angle of incidence of the light generated from the first source on a surface of the first filter is less than 30 degrees.
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