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Phasenverschiebungsinterferometrie unter anwendung von frequenztransformation

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Publication number
DE60140124D1
DE60140124D1 DE2001640124 DE60140124A DE60140124D1 DE 60140124 D1 DE60140124 D1 DE 60140124D1 DE 2001640124 DE2001640124 DE 2001640124 DE 60140124 A DE60140124 A DE 60140124A DE 60140124 D1 DE60140124 D1 DE 60140124D1
Authority
DE
Grant status
Grant
Patent type
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
DE2001640124
Other languages
English (en)
Inventor
Leslie L Deck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zygo Corp
Original Assignee
Zygo Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/24Measuring arrangements characterised by the use of optical means for measuring contours or curvatures
    • G01B11/2441Measuring arrangements characterised by the use of optical means for measuring contours or curvatures using interferometry
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/02Measuring arrangements characterised by the use of optical means for measuring length, width or thickness
    • G01B11/06Measuring arrangements characterised by the use of optical means for measuring length, width or thickness for measuring thickness, e.g. of sheet material
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00Instruments as specified in the subgroups and characterised by the use of optical measuring means
    • G01B9/02Interferometers for determining dimensional properties of, or relations between, measurement objects
    • G01B9/02001Interferometers for determining dimensional properties of, or relations between, measurement objects characterised by manipulating or generating specific radiation properties
    • G01B9/02002Frequency variation
    • G01B9/02004Frequency variation by using a continuous frequency sweep or scan
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00Instruments as specified in the subgroups and characterised by the use of optical measuring means
    • G01B9/02Interferometers for determining dimensional properties of, or relations between, measurement objects
    • G01B9/02015Interferometers for determining dimensional properties of, or relations between, measurement objects characterised by a particular beam path configuration
    • G01B9/02017Interferometers for determining dimensional properties of, or relations between, measurement objects characterised by a particular beam path configuration contacting one object several times
    • G01B9/02021Interferometers for determining dimensional properties of, or relations between, measurement objects characterised by a particular beam path configuration contacting one object several times contacting different faces of object, e.g. opposite faces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00Instruments as specified in the subgroups and characterised by the use of optical measuring means
    • G01B9/02Interferometers for determining dimensional properties of, or relations between, measurement objects
    • G01B9/02015Interferometers for determining dimensional properties of, or relations between, measurement objects characterised by a particular beam path configuration
    • G01B9/02027Two or more interferometric channels or interferometers
    • G01B9/02028Two or more reference or object arms in one interferometer
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00Instruments as specified in the subgroups and characterised by the use of optical measuring means
    • G01B9/02Interferometers for determining dimensional properties of, or relations between, measurement objects
    • G01B9/02055Interferometers for determining dimensional properties of, or relations between, measurement objects characterised by error reduction techniques
    • G01B9/02056Passive error reduction, i.e. not varying during measurement, e.g. by constructional details of optics
    • G01B9/02057Passive error reduction, i.e. not varying during measurement, e.g. by constructional details of optics by using common path configuration, i.e. reference and object path almost entirely overlapping
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00Instruments as specified in the subgroups and characterised by the use of optical measuring means
    • G01B9/02Interferometers for determining dimensional properties of, or relations between, measurement objects
    • G01B9/02055Interferometers for determining dimensional properties of, or relations between, measurement objects characterised by error reduction techniques
    • G01B9/02075Interferometers for determining dimensional properties of, or relations between, measurement objects characterised by error reduction techniques of particular errors
    • G01B9/02078Caused by ambiguity
    • G01B9/02079Quadrature detection, i.e. detecting relatively phase-shifted signals
    • G01B9/02081Quadrature detection, i.e. detecting relatively phase-shifted signals simultaneous quadrature detection, e.g. by spatial phase shifting
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2290/00Aspects of interferometers not specifically covered by any group under G01B9/02
    • G01B2290/45Multiple detectors for detecting interferometer signals
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2290/00Aspects of interferometers not specifically covered by any group under G01B9/02
    • G01B2290/70Using polarization in the interferometer
DE2001640124 2000-08-08 2001-08-02 Phasenverschiebungsinterferometrie unter anwendung von frequenztransformation Active DE60140124D1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US22380300 true 2000-08-08 2000-08-08
US09919511 US6882432B2 (en) 2000-08-08 2001-07-31 Frequency transform phase shifting interferometry
PCT/US2001/024467 WO2002012825A9 (en) 2000-08-08 2001-08-02 Frequency transform phase shifting interferometry

Publications (1)

Publication Number Publication Date
DE60140124D1 true DE60140124D1 (de) 2009-11-19

Family

ID=26918145

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2001640124 Active DE60140124D1 (de) 2000-08-08 2001-08-02 Phasenverschiebungsinterferometrie unter anwendung von frequenztransformation

Country Status (6)

Country Link
US (1) US6882432B2 (de)
JP (1) JP4951189B2 (de)
KR (1) KR100746515B1 (de)
DE (1) DE60140124D1 (de)
EP (1) EP1307702B1 (de)
WO (1) WO2002012825A9 (de)

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Also Published As

Publication number Publication date Type
JP2004510958A (ja) 2004-04-08 application
KR100746515B1 (ko) 2007-08-06 grant
US6882432B2 (en) 2005-04-19 grant
JP4951189B2 (ja) 2012-06-13 grant
KR20030051613A (ko) 2003-06-25 application
EP1307702B1 (de) 2009-10-07 grant
WO2002012825A9 (en) 2003-04-03 application
WO2002012825A1 (en) 2002-02-14 application
EP1307702A1 (de) 2003-05-07 application
US20020109851A1 (en) 2002-08-15 application

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