PL447768A1 - Laser light detection method - Google Patents

Laser light detection method

Info

Publication number
PL447768A1
PL447768A1 PL447768A PL44776824A PL447768A1 PL 447768 A1 PL447768 A1 PL 447768A1 PL 447768 A PL447768 A PL 447768A PL 44776824 A PL44776824 A PL 44776824A PL 447768 A1 PL447768 A1 PL 447768A1
Authority
PL
Poland
Prior art keywords
light beam
directed
reflected
mirror
optical fiber
Prior art date
Application number
PL447768A
Other languages
Polish (pl)
Other versions
PL249096B1 (en
Inventor
Michał Nikodem
Original Assignee
Politechnika Wrocławska
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
Application filed by Politechnika Wrocławska filed Critical Politechnika Wrocławska
Priority to PL447768A priority Critical patent/PL249096B1/en
Publication of PL447768A1 publication Critical patent/PL447768A1/en
Publication of PL249096B1 publication Critical patent/PL249096B1/en

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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/021—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using plane or convex mirrors, parallel phase plates, or particular reflectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0218—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using optical fibers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
    • 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
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • 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
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N2021/0106—General arrangement of respective parts
    • 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
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N2021/0106—General arrangement of respective parts
    • G01N2021/0112—Apparatus in one mechanical, optical or electronic block

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Optics & Photonics (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

Przedmiotem zgłoszenia jest sposób laserowej detekcji światła, przeznaczony do stosowania systemach monitorowania zanieczyszczeń powietrza, wykrywaniu emisji oraz wycieków gazów, w którym wytwarzaną przez laserowy układ optyczny wiązkę światła (2) wprowadza się do światłowodu (3) z pustym rdzeniem, przez który przepuszcza badany gaz, przy czym na końcu światłowodu (3) umiejscowiony jest element odbijający światło (4), od którego wiązka światła (2) odbija się i biegnąc zwrotnie kierowana jest do detektora (5), który charakteryzuje się tym, że cześć wiązki światła (2), która wychodzi z laserowego układu optycznego, kieruje się na zwierciadło paraboliczne (8), z którego kolejno kieruje się ją do wyżej wymienionego światłowodu (3), a część zatrzymuje się na umiejscowionym na drodze tej wiązki światła (2) zwierciadle (9); zaś przechodząca zwrotnie przez światłowód (3), po odbiciu od umiejscowionego na jego końcu elementu obijającego światło (4), wiązka światła (2) pada na kolimujące ją wyżej wymienione zwierciadło paraboliczne (8), z którego kieruje się ją na wyżej wymienione usytuowane na drodze wiązki światła (2) zwierciadło (9), od którego w części odbitej kierowana jest do detektora (5).The subject of the application is a method of laser light detection, intended for use in air pollution monitoring systems, emission and gas leak detection systems, in which a light beam (2) generated by a laser optical system is introduced into an optical fiber (3) with a hollow core through which the tested gas is passed, wherein at the end of the optical fiber (3) there is a light reflecting element (4), from which the light beam (2) is reflected and, running back, directed to a detector (5), which is characterized in that part of the light beam (2) that comes out of the laser optical system is directed onto a parabolic mirror (8), from which it is subsequently directed to the above-mentioned optical fiber (3), and part of it is stopped by a mirror (9) placed in the path of this light beam (2); and the light beam (2) passing back through the optical fibre (3), after being reflected from the light reflecting element (4) located at its end, falls on the above-mentioned parabolic mirror (8) collimating it, from which it is directed to the above-mentioned mirror (9) located in the path of the light beam (2), from which it is directed in the reflected part to the detector (5).

PL447768A 2024-02-13 2024-02-13 Method for laser light detection PL249096B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL447768A PL249096B1 (en) 2024-02-13 2024-02-13 Method for laser light detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL447768A PL249096B1 (en) 2024-02-13 2024-02-13 Method for laser light detection

Publications (2)

Publication Number Publication Date
PL447768A1 true PL447768A1 (en) 2025-08-18
PL249096B1 PL249096B1 (en) 2026-03-02

Family

ID=96736209

Family Applications (1)

Application Number Title Priority Date Filing Date
PL447768A PL249096B1 (en) 2024-02-13 2024-02-13 Method for laser light detection

Country Status (1)

Country Link
PL (1) PL249096B1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0447931A2 (en) * 1990-03-20 1991-09-25 Tecsa S.P.A. Infrared laser fibre optics gas detection device
GB2595936A (en) * 2020-06-12 2021-12-15 Is Instruments Ltd Gas phase Raman instrument for the detection of gaseous species using a hollow core fibre

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0447931A2 (en) * 1990-03-20 1991-09-25 Tecsa S.P.A. Infrared laser fibre optics gas detection device
GB2595936A (en) * 2020-06-12 2021-12-15 Is Instruments Ltd Gas phase Raman instrument for the detection of gaseous species using a hollow core fibre

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GOMÓŁKA G. ET AL.: "Journal of Lightwave Technology 2023, 41(18), pp. 6094-6101 doi: 10.1109/JLT.2023.3272308", "DUAL-PASS HOLLOW-CORE FIBER GAS SPECTROSCOPY USING A REFLECTIVE CONFIGURATION WITH HETERODYNE-BASED SIGNAL DETECTION." *
GOMÓŁKA G. ET AL.: "Optics Express 2023, 31(3), pp. 3685-3697 doi: 10.1364/OE.479963", "HIGHLY SENSITIVE METHANE DETECTION USING A MID-INFRARED INTERBAND CASCADE LASER AND AN ANTI-RESONANT HOLLOW-CORE FIBER." *

Also Published As

Publication number Publication date
PL249096B1 (en) 2026-03-02

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