公开(公告)号：US20240361253A1

公开(公告)日：2024-10-31

申请号：US18595292

申请日：2024-03-04

Applicant: NOVA LTD.

Inventor： Gilad BARAK ,  DANNY GROSSMAN ,  Dror SHAFIR ,  YOAV BERLATZKY ,  Yanir HAINICK

IPC: G01N21/956 ,  G01B9/02001 ,  G01B9/02015 ,  G01B9/02055 ,  G01B9/0209 ,  G01B11/06 ,  G01J3/453 ,  G01N21/88

CPC classification number: G01N21/956 ,  G01B9/02007 ,  G01B9/02032 ,  G01B9/02072 ,  G01B9/0209 ,  G01B11/0675 ,  G01J3/4535 ,  G01N21/8806 ,  G01B2210/56 ,  G01B2290/70 ,  G01N2021/8848

Abstract: A measurement system for use in measuring parameters of a patterned sample, the system including a broadband light source, an optical system configured as an interferometric system, a detection unit, and a control unit, where the interferometric system defines illumination and detection channels having a sample arm and a reference arm having a reference reflector, and is configured for inducing an optical path difference between the sample and reference arms, the detection unit for detecting a combined light beam formed by a light beam reflected from the reflector and a light beam propagating from a sample's support, and generating measured data indicative of spectral interference pattern formed by spectral interference signatures, and the control unit for receiving the measured data and applying a model-based processing to the spectral interference pattern for determining one or more parameters of the pattern in the sample.

公开(公告)号：US20230130231A1

公开(公告)日：2023-04-27

申请号：US17935930

申请日：2022-09-27

Applicant: NOVA LTD.

Inventor： Gilad BARAK ,  Dror SHAFIR ,  Yanir HAINICK ,  Shahar Gov

IPC: G01N21/956 ,  G03F7/20 ,  G01N21/95

Abstract: A method for use in optical measurements on patterned structures, the method including performing a number of optical measurements on a structure with a measurement spot configured to provide detection of light reflected from an illuminating spot at least partially covering at least two different regions of the structure, the measurements including detecting light reflected from the at least part of the at least two different regions within the measurement spot, the detected light including interference of at least two complex electric fields reflected from the at least part of the at least two different regions, and being therefore indicative of a phase response of the structure, carrying information about properties of the structure.

公开(公告)号：US20220326159A1

公开(公告)日：2022-10-13

申请号：US17694782

申请日：2022-03-15

Applicant: NOVA LTD.

Inventor： Gilad Barak ,  Yanir HAINICK ,  Yonatan OREN ,  Vladimir Machavariani

IPC: G01N21/65 ,  G01B11/06 ,  G01N21/95 ,  G03F7/20 ,  H01L21/66 ,  G01L1/24

Abstract: A method for use in measuring one or more characteristics of patterned structures, the method including providing measured data comprising data indicative of at least one Raman spectrum obtained from a patterned structure under measurements using at least one selected optical measurement scheme each with a predetermined configuration of at least one of illuminating and collected light conditions corresponding to the one or more characteristics to be measured, processing the measured data, and determining, for each of the at least one Raman spectrum, a distribution of Raman-contribution efficiency (RCE) within at least a part of the structure under measurements, being dependent on characteristics of the structure and the predetermined configuration of the at least one of illuminating and collected light conditions in the respective optical measurement scheme, and analyzing the distribution of Raman-contribution efficiency and determining the one or more characteristics of the structure.