【摘要】 从一种简单、全光纤结构的混合被动锁模掺铒光纤激光器中,得到了高稳定性、宽光谱的耗散孤子。激光器结合了半导体可饱和吸收体和非线性偏振旋转两种锁模机制,并运行在正常色散区内;通过色散管理,激光器能产生光谱宽度39.1 nm和时域宽度178 fs的孤子脉冲序列。激光输出的中心波长为1.55μm,重复频率约为34.3 MHz,单脉冲能量在0.33 nJ左右。与此同时,激光器的斜效率也约等于15.5%;室温工作下,激光器能实现自启动锁模,且运行在稳定单脉冲输出状态的时长在15 h以上。更多还原

【Abstract】 The dissipative solitons with high stability and wide spectrum are obtained from a simple and all fiber hybrid passively mode-locked erbium-doped fiber laser. The laser combines two mode-locked mechanisms of saturable absorber and nonlinear polarization rotation, and operates in the normal dispersion region. Through dispersion management, the laser can generate a series of soliton pulses with spectral width of 39.1 nm and pulse duration of 178 fs. The wavelength of laser operation is 1.55 μm, the repetition frequency is about 34.3 MHz, and single pulse energy is evaluated to be 0.33 nJ. At the same time, the laser also possesses the slope efficiency of about15.5%; at room temperature, the laser can realize self-starting mode locking, and the operation time in the stable state of a single pulse output is more than 15 h.更多还原