Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Development of Laser Power Meter Calibration System with 12-diode Laser Sources

12개 다이오드 레이저를 활용하는 레이저 복사출력계 교정시스템 개발

  • Kanghee Lee (Division of Physical Metrology, Korea Research Institute of Standards and Science) ;
  • Jae-Keun Yoo (Division of Physical Metrology, Korea Research Institute of Standards and Science) ;
  • In-Ho Bae (Division of Physical Metrology, Korea Research Institute of Standards and Science) ;
  • Seongchong Park (Division of Physical Metrology, Korea Research Institute of Standards and Science) ;
  • Dong-Hoon Lee (Division of Physical Metrology, Korea Research Institute of Standards and Science)
  • 이강희 (한국표준과학연구원 물리측정본부) ;
  • 유재근 (한국표준과학연구원 물리측정본부) ;
  • 배인호 (한국표준과학연구원 물리측정본부) ;
  • 박성종 (한국표준과학연구원 물리측정본부) ;
  • 이동훈 (한국표준과학연구원 물리측정본부)
  • Received : 2024.03.18
  • Accepted : 2024.03.27
  • Published : 2024.04.25
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Abstract

We demonstrate a laser power meter calibration system based on 12-diode laser sources coupled to single-mode fibres in a wavelength range from 400 to 1,600 nm. In our system, three laser power controllers ensure that the output power uncertainty of all laser sources is less than 0.1% (k=2). In addition, all laser beams are adjusted to have similar beam sizes of approximately 2 mm (1/e2-width) at the measurement position to minimise unmeasured laser power on a detector. As a reference detector, we use an integrating sphere combined with silicon and indium gallium arsenide photodiodes to minimise the non-uniformity and non-linearity of responsivity. The minimum uncertainty of the calibration system is estimated to be 1.1% (k=2) for most laser wavelengths.

400 nm부터 1,600 nm까지의 파장 영역에서 단일모드 광섬유에 결합된 12개의 다이오드 레이저 광원를 기반으로 하는 레이저 복사출력계 교정시스템을 소개한다. 본 시스템은 복사출력 측정위치에서 레이저 출력요동을 최소화하였고 모든 광원에 대해 비슷한 빔 크기를 갖는다. 또한 감응도의 비균일도 및 비선형성을 최소화하기 위해 적분구 기준기를 사용하였다. 이 교정시스템의 최소 측정불확도는 대부분의 레이저 파장에서 1.1% (k=2)로 추정된다.

Keywords

Acknowledgement

본 논문은 한국표준과학연구원의 기본사업인 "국제단위계(SI) 재정의 선도 차세대 측정표준 연구(KRISS-2024-GP2024-0001)"사업과 "물리 측정표준기술 고도화(KRISS-2024-GP2024-0002)"사업의 지원을 받아 수행된 연구의 결과물이며 이에 감사를 드립니다.

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