한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제31권9호
  • /
  • Pages.805-811
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  • 2014
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  • 1225-9071(pISSN)
  • /
  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
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Seed 레이저용 정상분산 영역에서 발진하는 간단한 구조의 이터븀 기반 모드 잠금 광섬유 레이저

A Simple Yb-Doped Mode-Locked Fiber Oscillator under Normal Dispersion as a Seed Laser

  • 김병권 (조선대학교 광기술공학과) ;
  • 주기남 (조선대학교 광기술공학과)
  • Kim, Byeong Kwon (Department of Photonic Engineering, Chosun University) ;
  • Joo, Ki-Nam (Department of Photonic Engineering, Chosun University)
  • 투고 : 2014.05.13
  • 심사 : 2014.07.02
  • 발행 : 2014.09.01
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초록

In this investigation, we constructed and demonstrated a simple Yb-doped fiber laser, of which longitudinal modes are mode-locked without any additional devices to compensate the dispersion caused by optical components. Non-linear polarization rotation (NPR) was adopted for the mode-locking mechanism and a polarization controller (PC) was used for a kind of spectral filters to restrict the bandwidth for mode-locking. As the result, the laser was successfully operated as mode-locked with the repetition rate of 42.2 MHz and the spectrum was broadened up to approximately 16 nm at 1033 nm center wavelength when the laser was mode-locked. In this paper, the operation of the developed Yb-doped mode-locked laser is explained with the concept of Lyot filter realized by a PC, which enables mode-locking under normal dispersion. In the industrial applications, this laser can be used as a seed laser of the high power lasers for optical manufacturing.

키워드

참고문헌

  1. Prochnow, O., Ruehl, A., Schultz, M., Wandt, D., and Kracht, D., "All-Fiber Similariton Laser at 1 ${\mu}m$ without Dispersion Compensation," Optics Express, Vol. 15, No. 11, pp. 6889-6893, 2007. https://doi.org/10.1364/OE.15.006889
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  6. Deng, Y. and Knox, W. H., "Self-Starting Passive Harmonic Mode-Locked Femtosecond Yb3+-Doped Fiber Laser at 1030nm," Optics Letters, Vol. 29, No. 18, pp. 2121-2123, 2004. https://doi.org/10.1364/OL.29.002121
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