GB2254693B - Methods of and apparatus for measuring using acousto-optic devices - Google Patents

Methods of and apparatus for measuring using acousto-optic devices

Info

Publication number
GB2254693B
GB2254693B GB9208113A GB9208113A GB2254693B GB 2254693 B GB2254693 B GB 2254693B GB 9208113 A GB9208113 A GB 9208113A GB 9208113 A GB9208113 A GB 9208113A GB 2254693 B GB2254693 B GB 2254693B
Authority
GB
United Kingdom
Prior art keywords
acousto
measuring
methods
optic devices
optic
Prior art date
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.)
Expired - Fee Related
Application number
GB9208113A
Other versions
GB2254693A (en
GB9208113D0 (en
Inventor
Paul Anthony Gass
John Roy Sambles
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.)
BTG International Ltd
Original Assignee
British Technology Group Ltd
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
Priority claimed from GB919107796A external-priority patent/GB9107796D0/en
Application filed by British Technology Group Ltd filed Critical British Technology Group Ltd
Priority to GB9208113A priority Critical patent/GB2254693B/en
Publication of GB9208113D0 publication Critical patent/GB9208113D0/en
Publication of GB2254693A publication Critical patent/GB2254693A/en
Application granted granted Critical
Publication of GB2254693B publication Critical patent/GB2254693B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/1717—Systems in which incident light is modified in accordance with the properties of the material investigated with a modulation of one or more physical properties of the sample during the optical investigation, e.g. electro-reflectance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N2021/1748—Comparative step being essential in the method
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N2021/1757—Time modulation of light being essential to the method of light modification, e.g. using single detector
    • G01N2021/1759—Jittering, dithering, optical path modulation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/8422—Investigating thin films, e.g. matrix isolation method
    • G01N2021/8427—Coatings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/55—Specular reflectivity
    • G01N21/552—Attenuated total reflection
    • G01N21/553—Attenuated total reflection and using surface plasmons
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/90—Plate chromatography, e.g. thin layer or paper chromatography
    • G01N30/95—Detectors specially adapted therefor; Signal analysis

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
GB9208113A 1991-04-12 1992-04-13 Methods of and apparatus for measuring using acousto-optic devices Expired - Fee Related GB2254693B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9208113A GB2254693B (en) 1991-04-12 1992-04-13 Methods of and apparatus for measuring using acousto-optic devices

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919107796A GB9107796D0 (en) 1991-04-12 1991-04-12 Methods of and apparatus for measurement using acousto-optic devices
GB9208113A GB2254693B (en) 1991-04-12 1992-04-13 Methods of and apparatus for measuring using acousto-optic devices

Publications (3)

Publication Number Publication Date
GB9208113D0 GB9208113D0 (en) 1992-05-27
GB2254693A GB2254693A (en) 1992-10-14
GB2254693B true GB2254693B (en) 1995-10-25

Family

ID=26298723

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9208113A Expired - Fee Related GB2254693B (en) 1991-04-12 1992-04-13 Methods of and apparatus for measuring using acousto-optic devices

Country Status (1)

Country Link
GB (1) GB2254693B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109030358B (en) * 2018-07-31 2020-11-27 电子科技大学 System and method for detecting weak infrared signal based on coaxial cavity microwave resonance principle
CN114136925B (en) * 2021-11-15 2024-02-02 西安工业大学 Laser scanning type photovoltaic panel dust deposition scattering rate distribution detection device and measurement method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128734A (en) * 1982-10-08 1984-05-02 Nat Res Dev Irradiative probe system
GB2142427A (en) * 1983-05-20 1985-01-16 Citizen Watch Co Ltd Surface shape measurement apparatus
GB2146116A (en) * 1983-05-13 1985-04-11 Citizen Watch Co Ltd Surface condition measurement apparatus
EP0250070A1 (en) * 1986-04-28 1987-12-23 Bran + Lübbe GmbH Optical analysis method and apparatus having programmable rapid random wavelength access
WO1989009380A1 (en) * 1988-03-31 1989-10-05 National Research Development Corporation Optical measuring apparatus and method
EP0405462A1 (en) * 1989-06-27 1991-01-02 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Optical system for measuring linear or angular displacements
EP0417551A2 (en) * 1989-09-13 1991-03-20 Fred H. Pollak Photoreflectance method and apparatus utilizing acousto-optic modulation

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128734A (en) * 1982-10-08 1984-05-02 Nat Res Dev Irradiative probe system
GB2146116A (en) * 1983-05-13 1985-04-11 Citizen Watch Co Ltd Surface condition measurement apparatus
GB2142427A (en) * 1983-05-20 1985-01-16 Citizen Watch Co Ltd Surface shape measurement apparatus
EP0250070A1 (en) * 1986-04-28 1987-12-23 Bran + Lübbe GmbH Optical analysis method and apparatus having programmable rapid random wavelength access
WO1989009380A1 (en) * 1988-03-31 1989-10-05 National Research Development Corporation Optical measuring apparatus and method
EP0405462A1 (en) * 1989-06-27 1991-01-02 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Optical system for measuring linear or angular displacements
EP0417551A2 (en) * 1989-09-13 1991-03-20 Fred H. Pollak Photoreflectance method and apparatus utilizing acousto-optic modulation

Also Published As

Publication number Publication date
GB2254693A (en) 1992-10-14
GB9208113D0 (en) 1992-05-27

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050413