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Author:

Wang, Xuan (Wang, Xuan.) | Yao, Chuanfei (Yao, Chuanfei.) | Li, Pingxue (Li, Pingxue.) | Ren, Guochuan (Ren, Guochuan.) | Yang, Linjing (Yang, Linjing.) | Wu, Yongjing (Wu, Yongjing.) | Wang, Chao (Wang, Chao.)

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EI Scopus

Abstract:

In this work, a high-power all-fiber mid-infrared (MIR) supercontinuum (SC) laser source was generated in a short piece of centimeter level germania-doped fiber (GDF). The MIR SC generation in GDF was pumped by a 2 µm chirped pulse amplification (CPA) system. The seed source was a passively mode-locked oscillator by semiconductor saturable absorber mirror (SESAM) with a pulse width of 29.7 ps, a spectrum width of 0.3 nm and a fundamental repetition rate of 44.31 MHz. A high-power pump source with a spectral coverage of 1.9~2.2 µm was obtained in thulium-doped fiber amplifier (TDFA). Adopted by 19 cm-long 64 mol. % GDF, we obtained a broadband SC source spanning from 1850 to 3000 nm. The generated SC had a maximum output power of 31.2W with a pump slope efficiency from 56.2% to 30.9%. By optimizing fusion-spliced parameters, a high optical coupling efficiency was obtained between single-mode fiber (SMF) and GDF. In addition, we measured the pulse characteristics of SC laser source in different peak power of pumping source and different length of GDF. It paved the way for further realization of high power and wide spectrum MIR SC laser source. © 2022 SPIE

Keyword:

Infrared devices Single mode fibers Semiconductor saturable absorber mirrors Semiconductor lasers Optical pumping Efficiency Ultrashort pulses Fiber amplifiers Passive mode locking Fiber lasers Pulse repetition rate

Author Community:

  • [ 1 ] [Wang, Xuan]Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China
  • [ 2 ] [Yao, Chuanfei]Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China
  • [ 3 ] [Li, Pingxue]Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China
  • [ 4 ] [Ren, Guochuan]Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China
  • [ 5 ] [Yang, Linjing]Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China
  • [ 6 ] [Wu, Yongjing]Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China
  • [ 7 ] [Wang, Chao]Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China

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Source :

ISSN: 0277-786X

Year: 2022

Volume: 12169

Language: English

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 18

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