17-μm dissipative soliton Tm-doped fiber laser
17-μm dissipative soliton Tm-doped fiber laser
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DOI：
10.1364/prj.419273
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发表时间：
2021-03
影响因子：
7.6
通讯作者：
Ji-Xiang Chen;Xiang-Yue Li;Ti-Jian Li;Ze-Yu Zhan;Meng Liu;Can Li;A. Luo;P. Zhou;K. Wong;Wen-Cheng Xu;Z. Luo
中科院分区：
文献类型：
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作者：
Ji-Xiang Chen;Xiang-Yue Li;Ti-Jian Li;Ze-Yu Zhan;Meng Liu;Can Li;A. Luo;P. Zhou;K. Wong;Wen-Cheng Xu;Z. Luo
报道了利用非线性偏振旋转技术在1.7μm净正常色散掺Tm光纤激光器中产生耗散孤子的实验结果。采用腔内带通滤光片抑制长波辐射，用一段超大数值孔径(UHNA4)光纤补偿腔内色散。获得了中心波长为1746 nm、光谱范围从1737 nm到1754 nm的耗散孤子。耗散孤子的消啁啾持续时间和能量分别为370ps和0.2nJ。此外，还研究了多耗散孤子的动力学行为。通过对腔色散的优化，得到了脉冲宽度为230ps的50 nm宽带耗散光孤子。耗散孤子种子激光器的研制是实现1.7-μm波段啁啾脉冲放大系统的第一步，在生物医学成像和材料加工等领域具有潜在的应用前景。
We report on the dissipative soliton generation in a 1.7-μ m net-normal dispersion Tm-doped fiber laser by nonlinear polarization rotation technique. An intra-cavity bandpass filter was employed to suppress the long-wavelength emission, while the cavity dispersion was compensated by a segment of ultra-high numerical aperture (UHNA4) fiber. The dissipative soliton with a central wavelength of 1746 nm was obtained, covering a spectral range from 1737 nm to 1754 nm. The de-chirped duration and energy of the dissipative soliton were 370 fs and 0.2 nJ, respectively. In addition, the dynamics of multiple dissipative solitons were also investigated. Through optimization of the cavity dispersion, the 50 nm broadband dissipative soliton with de-chirped pulse duration of 230 fs could be achieved. The development of dissipative soliton seed laser represents the first step in achieving the chirped pulse amplification (CPA) system at 1.7-μ m waveband, which would find potential applications in fields such as biomedical imaging and material processing.