Current Optics and Photonics

Optical Society of Korea (한국광학회)
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High Power 1.83 GHz Femtosecond Yb-doped Fiber Laser Incorporating Repetition Rate Multipliers

  • In Chul Park (Department of Photonics and Nanoelectronics, Hanyang University ERICA) ;
  • Eun Kyung Park (Department of Photonics and Nanoelectronics, Hanyang University ERICA) ;
  • Ye Jin Oh (Department of Photonics and Nanoelectronics, Hanyang University ERICA) ;
  • Hoon Jeong (Korea Institute of Industrial Technology) ;
  • Ji Won Kim (Department of Photonics and Nanoelectronics, Hanyang University ERICA) ;
  • Jeong Sup Lee (EO Technics Co.)
  • Received : 2023.08.09
  • Accepted : 2023.10.19
  • Published : 2023.12.25
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Abstract

A high-power Yb-doped femtosecond (fs) fiber laser at a repetition rate of 1.83 GHz is reported. By employing a 5-stage repetition rate multiplier, the repetition rate of the mode-locked master oscillator was multiplied from 57.1 MHz to 1.83 GHz. The ultrashort pulse output at 1.83 GHz was amplified in a two-stage Yb-doped fiber amplifier, leading to >100 W of fs laser output with a pulse duration of 290 fs. The theoretical pulse width along the fiber was simulated, showing that it was in good agreement with experimental results. Further improvement in power scaling is discussed.

Keywords

Acknowledgement

Ministry of Trade, Industry & Energy (Technology Innovation Program no. 20017395).

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