Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Quasi-continuous-wave Yb-doped Fiber Lasers with 1.5 kW Peak Power

첨두 출력 1.5 kW급 준연속 이터븀 첨가 광섬유 레이저

  • Jeon, Minjee (Manufacturing System R&D Department, Korea Institute of Industrial Technology) ;
  • Jung, Yeji (Manufacturing System R&D Department, Korea Institute of Industrial Technology) ;
  • Kim, Jiwon (Department of Applied physics, University of hanyang ERICA) ;
  • Jeong, Hoon (Manufacturing System R&D Department, Korea Institute of Industrial Technology)
  • 전민지 (청정생산시스템연구소, 한국생산기술연구원) ;
  • 정예지 (청정생산시스템연구소, 한국생산기술연구원) ;
  • 김지원 (한양대학교 응용물리학과) ;
  • 정훈 (청정생산시스템연구소, 한국생산기술연구원)
  • Received : 2016.04.15
  • Accepted : 2016.06.09
  • Published : 2016.06.25
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Abstract

High-power quasi-continuous-wave (qcw) operation in Yb-doped double-clad fiber lasers with near-diffraction-limited quality of the output beam is reported. Based on numerical simulation, we built a simple, all-fiberized Yb fiber laser, and a fiber-based master-oscillator power amplifier (MOPA). Both laser systems have successfully produced qcw output with average power greater than 150 W at 1080 nm and 10 ms pulse duration at 10 Hz repetition rate, corresponding to a peak power greater than 1.5 kW for 205 W of pump power at 976 nm. Laser performance, including beam quality and slope efficiency, was characterized in both configurations. Prospects for power scaling and applications are discussed.

본 논문에서는 이터븀(Yb)이 첨가된 이중 클래딩 광섬유를 이용한 고출력 고품질 준연속 레이저 시스템에 대한 연구 개발과 레이저 특성에 대해 보고한다. 이론적 수치 모사를 통해 최적화된 준연속 레이저 발진 조건을 찾았고, 그것을 바탕으로 공진기 구조와 MOPA (Master-Oscillator Power-Amplifier) 구조를 가진 광섬유 레이저 시스템을 각각 구축하였다. 두 레이저 시스템 모두 10 Hz 반복률, 10 ms로 작동시킬 때 최고 평균 출력 >150 W, 첨두 출력 >1.5 kW 이상의 준연속 레이저 빔을 발생시키는데 성공하였고, 레이저 발진 특성 및 빔 특성을 각각 비교하였다. 그리고 향후 더 높은 출력을 얻기 위한 방법과 전망에 대해 논의할 것이다.

Keywords

References

  1. D. J. Richardson, J. Nilsson, W. A. Clarkson, "High power fiber lasers : current status and future perspectives," J. Opt. Soc. Am. B 27, B63-B92 (2010). https://doi.org/10.1364/JOSAB.27.000B63
  2. Michalis N. Zervas, Christophe A. Codemard, "High Power Fiber Lasers : A Review," Int. J. Mod. Phys. B, 28, 1442009 (2014). https://doi.org/10.1142/S0217979214420090
  3. Hailong Yu, Hanwei Zhang, Haiben Lv, Xiaolin Wang, Jinyong Leng, Hu Xiao, Shaofeng Guo, Pu Zhou, Xiaojun Xu, Jinbao Chen, "3.15 kW direct diode-pumped near diffraction-limited all-fiber-integrated fiber laser," Appl. Optics 54, 4556-4560 (2015). https://doi.org/10.1364/AO.54.004556
  4. Y. C. Jeong, Alexander J. B, Jayanta K. Sahu, S. H. Chung, Johan Nilsson, David N. Payne, "Multi-kilowatt Single-mode Ytterbium-doped Large-core Fiber Laser," JOSK, 13, 416-422 (2009).
  5. J. W. Dawson, M. J. Messerly, R. J. Beach, M. Y. Shverdin, E. A. Stappaerts, A. K. Sridharan, P. H. Pax, J. E. Heebner, C. W. Siders, C. P. J. Barty, "Analysis of the scalability of diffraction-limited fiber lasers and amplifiers to high average power," Opt. Express 16, 13240-13266 (2008). https://doi.org/10.1364/OE.16.013240
  6. V. Fomin, M. Abramov, A. Ferin, A. Abramov, D. Mochalov, N. Platonov, V. Gapontsev, "10 kW single-mode fiber laser," International Symposium on High-Power Fiber Lasers and Their Applications (St. Petersburg, June 28-July 1, 2010), SyTu-1.3.
  7. Jiajian Zhu, Pu Zhou, Yanxing Ma, Xiaojun Xu, Zejin Liu, "Power scaling analysis of tandem-pumped Yb-doped fiber lasers and amplifiers," Opt. Express 19, 18645-18654 (2011) https://doi.org/10.1364/OE.19.018645
  8. P.R. Morkel, K. P. Jedrzejewski, E. R. Taylor, D. N. Payne, "Short-Pulse, High-Power Q-Switched Fiber Laser," Photonics Technology Letters, IEEE, 4, 545-547 (1992) https://doi.org/10.1109/68.141962
  9. Tim Westphaling, "Pulsed Fiber Lasers from ns to ms range and their applications," Physics Procedia. A, 5, 125-136 (2010).
  10. Colin Woratz, Noemie Dury, Christoph Ruettimann, Ulrich Durr, Ronald Holtz, "Expansion of Pulsed Laser Process Limits through Pulsed Fiber Lasers," Laser Optics, IEEE, 14544983 (2014).