期刊
OPTIK
卷 270, 期 -, 页码 -出版社
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2022.170025
关键词
Mid-IR fiber laser; Self-similar pulses; Mode-locking; Dispersion compensation
类别
资金
- Scientific Research Fund of Hunan Provincial Education Department
- National Natural Science Foundation of China
- Hunan Provincial Natural Science Foundation of China
- [21B0136]
- [21B0111]
- [21B0476]
- [62005234]
- [2022JJ30556]
- [2022JJ30264]
In this study, numerical simulations were conducted to investigate the generation of sub-100 fs ultrafast pulses in the mid-IR region. The results show the possibility of achieving stable self-similar pulses with a large linear chirp, which can be compressed to near-Fourier-transform-limited pulses through de-chirping technology. The study provides an attractive alternative scheme for generating sub-100 fs ultrafast fiber lasers in the mid-IR region.
At present, generating sub-100 fs ultrafast pulse in the mid-infrared (mid-IR) region around 3 mu m is very challenging. In this work, we have numerically investigated self-similar mode-locking of an Er3+-doped fluoride fiber laser with dispersion compensation. The simulation results show that stable self-similar pulse with 3 dB spectral bandwidth of 100 nm can be achieved. The self-similar pulse has a large linear chirp with the corresponding time bandwidth product (TBP) of about 5.81, which can be easily compressed to a near-Fourier-transform-limited pulse as short as 92 fs via de-chirping technology outside the cavity. In addition, optimal investigations of the mode -locked fiber laser have been conducted. This work provides an attractive alternative scheme for generating sub-100 fs ultrafast fiber laser in the mid-IR region.
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