基于ZrTe3纳米颗粒可饱和吸收体的无源谐波锁模掺铒光纤激光器,Annalen Der Physik

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基于ZrTe3纳米颗粒可饱和吸收体的无源谐波锁模掺铒光纤激光器
Annalen Der Physik ( IF 2.2 ) Pub Date : 2021-11-05 , DOI: 10.1002/andp.202100237
Zhanqiang Hui ₁ , Niping Shen ₁ , Yuanhong Wang ₁ , Dongdong Han ₁ , Tiantian Li ₁ , Hua Zhou ₁ , Jiamin Gong ₁

Affiliation

二维层状结构纳米材料由于其优异的光学、电学和磁学特性而备受关注。在本研究中，制备了一种新型二维碲化锆 (ZrTe ₃ ) 纳米片材料。采用双平衡检测方法研究了ZrTe ₃纳米片的非线性饱和吸收特性。饱和强度和调制深度分别为100.6 MW cm ^-2和3.3%。基于 ZrTe _{3 的}可饱和吸收体 (SA)首次应用于谐波无源锁模掺铒光纤激光器。结果表明，当泵浦功率为 50 mW 时，实现了基频为 5.82 MHz 的锁模。脉冲宽度、中心波长、3 dB 带宽和信噪比 (SNR) 分别为 1.44 ps、1563.7 nm、2.31 nm 和 76 dB。随着泵浦功率的增加，在310 mW的泵浦功率下获得了483.1 MHz的高重复率，对应于83阶谐波锁模。脉冲宽度、3 dB 光谱宽度和 SNR 分别为 1.302 ps、3.14 nm 和 67 dB。这表明ZrTe ₃纳米片是优异的光子材料，可用于产生高重复率脉冲激光器，在超快光子学中具有巨大的应用潜力。

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Passive Harmonic Mode-Locked Erbium-Doped Fiber Laser Based on ZrTe3 Nanoparticle-Based Saturable Absorber

2D layer-structured nanomaterials have attracted much attention owing to their excellent optical, electrical, and magnetic properties. In this study, a novel 2D zirconium tritelluride (ZrTe₃) nanosheet material is prepared. The nonlinear saturated absorption characteristics of the ZrTe₃ nanosheets are studied using the double-equilibrium detection method. The saturation intensity and modulation depth are 100.6 MW cm⁻² and 3.3%, respectively. A saturable absorber (SA) based on ZrTe₃ is used in a harmonic passive mode-locking erbium-doped fiber laser for the first time. The results show that when the pump power is 50 mW, mode-locking with a fundamental frequency of 5.82 MHz is achieved. The pulse width, center wavelength, 3 dB bandwidth, and signal-to-noise ratio (SNR) are 1.44 ps, 1563.7 nm, 2.31 nm, and 76 dB, respectively. With an increase in pump power, a high repetition rate of 483.1 MHz, corresponding to the 83-order harmonic mode-locked, is obtained at a pump power of 310 mW. The pulse width, 3 dB optical spectral width, and SNR are 1.302 ps, 3.14 nm, and 67 dB, respectively. This reveals that ZrTe₃ nanosheets are excellent photonic materials that can be used to generate high-repetition-rate pulse lasers and have great application potential in ultrafast photonics.

更新日期：2021-12-15

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