Soliton Mode-Locked Large-Mode-Area Tm-Doped Fiber Oscillator

Zexiu Zhu, Zhipei Sun, Hui Zhang, Mengmeng Wang, Rongling Wei, Zhijian Zheng, Peiguang Yan, Shuangchen Ruan, Jinzhang Wang*, Tawfique Hasan

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

We report a passively mode-locked fiber oscillator based on thulium-doped large-mode-area (LMA) fiber. Reliably mode-locking soliton operation can be readily achieved after the suppression of the higher-order modes by using mode field adapters in combination with coiling fiber method. The laser delivers 600-fs level pulses at ~\mu \text{m}$ with an average power of up to 243 mW and a repetition rate of 53.7 MHz. The output corresponds to a maximum pulse energy of 4.5 nJ, >5 times larger than that of a similar homemade mode-locked Tm laser with the LMA fibers replaced by single mode fibers, coinciding with theoretical prediction. The successful demonstration of our soliton mode-locked LMA fiber laser at ~\mu \text{m}$ offers another strategy for high performance ultrafast fiber sources at mid-infrared region.

Original languageEnglish
Article number8933024
Pages (from-to)117-120
Number of pages4
JournalIEEE Photonics Technology Letters
Volume32
Issue number2
DOIs
Publication statusPublished - 15 Jan 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • large-mode-area (LMA) fiber
  • mode-locked
  • nonlinear polarization evolution (NPE)
  • soliton
  • Ultrafast fiber laser

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