Switchable soliton molecules and noise-like pulses in hybrid mode-locking fiber laser
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摘要:
不同类型脉冲之间的演化是被动锁模光纤激光器丰富动力学的体现。报道了一种可实现多种脉冲切换的混合锁模光纤激光器，当泵浦功率为400 mW时实现了孤子分子、谐波锁模、孤子簇之间的相互切换。增加泵浦功率至600 mW时获得了类噪声脉冲输出，对应的输出功率和单脉冲能量分别为15.2 mW和0.86 nJ。通过调节偏振控制器实现了类噪声脉冲中心波长从1 895 nm到1 930 nm可调谐。所搭建的激光器具有锁模脉冲可切换，波长可调谐，能自启动等优点。
Abstract:The evolution between different types of pulses is the embodiment of the passive mode-locking fiber laser rich dynamics. A hybrid mode-locking fiber laser with multiple pulse switching was reported. When the pump power was 400 mW, the mutual switch of pulses between soliton molecules, harmonic mode-locking and soliton clusters were realized. Then, when the pump power was increased to 600 mW, the noise-like pulse output was realized, and the corresponding output power and single pulse energy were 15.2 mW and 0.86 nJ, respectively. By adjusting the polarization controller, the central wavelength of noise-like pulse could be tuned from 1 895 nm to 1 930 nm. The designed laser has the advantages of mode-locking switching, wavelength tuning and automatic start.
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Keywords:
- fiber laser /
- hybrid mode-locking /
- soliton molecules /
- noise-like pulses /
- wavelength tuning
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图 1 基于非线性偏振旋转和半导体可饱和吸收镜混合锁模结构的2 μm光纤激光器
Figure 1. Structure diagram of 2 μm fiber laser based on hybrid mode-locking structure of nonlinear polarization rotation and semiconductor saturable aborber mirror
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