WO2012018195A3 - 능동형 모드 잠김 레이저를 이용한 광 결맞음 단층 영상기기 - Google Patents

능동형 모드 잠김 레이저를 이용한 광 결맞음 단층 영상기기 Download PDF

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Publication number
WO2012018195A3
WO2012018195A3 PCT/KR2011/005571 KR2011005571W WO2012018195A3 WO 2012018195 A3 WO2012018195 A3 WO 2012018195A3 KR 2011005571 W KR2011005571 W KR 2011005571W WO 2012018195 A3 WO2012018195 A3 WO 2012018195A3
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WIPO (PCT)
Prior art keywords
light
unit
path
fiber laser
active mode
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PCT/KR2011/005571
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English (en)
French (fr)
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WO2012018195A2 (ko
Inventor
김창석
정명영
이휘돈
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부산대학교 산학협력단
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Application filed by 부산대학교 산학협력단 filed Critical 부산대학교 산학협력단
Priority to US13/814,061 priority Critical patent/US9207063B2/en
Publication of WO2012018195A2 publication Critical patent/WO2012018195A2/ko
Publication of WO2012018195A3 publication Critical patent/WO2012018195A3/ko

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/0209—Low-coherence interferometers
    • G01B9/02091—Tomographic interferometers, e.g. based on optical coherence
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/02001—Interferometers characterised by controlling or generating intrinsic radiation properties
    • G01B9/02002—Interferometers characterised by controlling or generating intrinsic radiation properties using two or more frequencies
    • G01B9/02004—Interferometers characterised by controlling or generating intrinsic radiation properties using two or more frequencies using frequency scans
    • 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
    • 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
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4795—Scattering, i.e. diffuse reflection spatially resolved investigating of object in scattering medium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
    • H01S3/1106—Mode locking
    • H01S3/1112—Passive mode locking
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06791—Fibre ring lasers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/23—Arrangements of two or more lasers not provided for in groups H01S3/02 - H01S3/22, e.g. tandem arrangements of separate active media
    • H01S3/2383—Parallel arrangements

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Plasma & Fusion (AREA)
  • Engineering & Computer Science (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

개시된 광 결맞음 단층 영상기기(optical coherence tomography, OCT)는 샘플의 영상 정보를 획득하기 위하여 능동형 모드 잠김 레이저(active mode-locking fiber laser)를 이용한다. 본 영상기기는 공진기 내부로 전달받은 변조(modulation) 신호에 의하여 중심 파장이 주기적으로 변하는 광을 방출하는 광원부, 광원부로부터 방출된 단일 경로의 광을 서로 다른 경로를 갖는 제1 광과 제2 광으로 분리하는 광 분리부, 광 분리부에 의하여 분리된 제1 광이 진행하는 경로에 배치되어 상기 제1 광을 반사시키는 기준부, 샘플을 실장하고, 광 분리부에 의하여 분리된 제2 광의 경로에 배치되어 제2 광을 제1 광보다 일정 시간 지연시켜 반사시키는 진단부, 기준부와 진단부를 통하여 서로 다른 경로로 진행되어 서로 간섭이 발생된 제1 광과 제2 광을 결합시키는 광 결합부, 및 광 결합부로부터 전달받은 광의 데이터를 검출하고 영상화하는 신호처리부를 포함한다. 따라서 본 영상기기는 변조 신호를 광원부에 직접 전달하여 기계적 한계를 가지고 고가인 가변 필터를 제거함으로써, 기계적 한계를 극복하고 비용을 절감할 수 있다.
PCT/KR2011/005571 2010-08-04 2011-07-28 능동형 모드 잠김 레이저를 이용한 광 결맞음 단층 영상기기 WO2012018195A2 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/814,061 US9207063B2 (en) 2010-08-04 2011-07-28 Optical coherence tomography using active mode-locking fiber laser

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100075260A KR101258235B1 (ko) 2010-08-04 2010-08-04 능동형 모드 잠김 레이저를 이용한 광 결맞음 단층 영상기기
KR10-2010-0075260 2010-08-04

Publications (2)

Publication Number Publication Date
WO2012018195A2 WO2012018195A2 (ko) 2012-02-09
WO2012018195A3 true WO2012018195A3 (ko) 2012-05-10

Family

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PCT/KR2011/005571 WO2012018195A2 (ko) 2010-08-04 2011-07-28 능동형 모드 잠김 레이저를 이용한 광 결맞음 단층 영상기기

Country Status (3)

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US (1) US9207063B2 (ko)
KR (1) KR101258235B1 (ko)
WO (1) WO2012018195A2 (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101770779B1 (ko) * 2015-10-23 2017-08-23 부산대학교 산학협력단 모드 잠금 발진되는 출력광 세기의 시간 변화를 이용한 측정 기기
WO2018169289A1 (ko) * 2017-03-13 2018-09-20 한국과학기술원 광섬유 레이저 발생장치
KR101967667B1 (ko) * 2018-09-10 2019-04-11 국방과학연구소 광선로 식별 장치
AU2021241492A1 (en) * 2020-01-31 2022-06-02 The General Hospital Corporation Frequency-comb generation based on electro-optic phase-code mode-locking for circular-ranging OCT

Citations (4)

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KR20000066752A (ko) * 1999-04-20 2000-11-15 박호군 반도체 광증폭기를 이득매체로 하는 능동형 모드 록킹된 고리형 반도체-광섬유 레이저
JP2002335039A (ja) * 2001-05-10 2002-11-22 Nippon Telegr & Teleph Corp <Ntt> 波長可変モード同期レーザ
JP2005093498A (ja) * 2003-09-12 2005-04-07 Fujitsu Ltd 波長可変レーザ
JP2009031238A (ja) * 2007-06-29 2009-02-12 Optical Comb Inc 光コヒーレンストモグラフィー装置

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EP1713151A4 (en) * 2004-02-04 2010-02-03 Nippon Telegraph & Telephone MODEL-LASED LASER LIGHT SOURCE AND MULTIPLE LIGHT SOURCE WITH IT
US8315282B2 (en) * 2005-01-20 2012-11-20 Massachusetts Institute Of Technology Fourier domain mode locking: method and apparatus for control and improved performance
JP2007151631A (ja) * 2005-11-30 2007-06-21 Kyocera Corp 光断層イメージング装置
EP2136443A1 (en) 2007-01-29 2009-12-23 Optical Comb, Inc. Wavelength scanning light source and optical coherence tomography device
JP5495506B2 (ja) * 2008-05-13 2014-05-21 キヤノン株式会社 レーザ装置および光断層画像撮像装置
KR100991121B1 (ko) * 2008-11-27 2010-11-01 부산대학교 산학협력단 광간섭현상을 이용한 광학측정시스템 및 그를 위한 광지연길이 연장방법
KR101108554B1 (ko) * 2009-04-30 2012-01-30 하나기술(주) 진주 감별 장치 및 방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000066752A (ko) * 1999-04-20 2000-11-15 박호군 반도체 광증폭기를 이득매체로 하는 능동형 모드 록킹된 고리형 반도체-광섬유 레이저
JP2002335039A (ja) * 2001-05-10 2002-11-22 Nippon Telegr & Teleph Corp <Ntt> 波長可変モード同期レーザ
JP2005093498A (ja) * 2003-09-12 2005-04-07 Fujitsu Ltd 波長可変レーザ
JP2009031238A (ja) * 2007-06-29 2009-02-12 Optical Comb Inc 光コヒーレンストモグラフィー装置

Also Published As

Publication number Publication date
WO2012018195A2 (ko) 2012-02-09
US20130169972A1 (en) 2013-07-04
KR101258235B1 (ko) 2013-04-30
US9207063B2 (en) 2015-12-08
KR20120044391A (ko) 2012-05-08

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