Harmonic Mode-Locked Noise-Like Rectangle Pulses in an Erbium-Doped Fiber Laser
Abstract: We reported on the generation of harmonically mode-locked rectangular pulses in a long cavity figure-eight fiber laser. The mode-locked spectrum was broad and smooth and its pulse profile appeared to be the rectangular shape on the oscilloscope. However, the pulse type was confirmed as noise-like pulse by an autocorrelator, namely noise-like rectangular pulse. By adjusting the laser parameters, such as polarization controllers and pump power, up to 5th harmonic mode- locked noise-like rectangular pulse was achieved. It indicates that the energy of noise-like rectangular pulse in the fiber laser cannot be increased infinitely, but it may split into multiple pulses, leading to the phenomenon of harmonically mode-locked rectangular pulse. The obtained results may be useful for enhancing the understanding of the mechanism and characteristics of noise-like rectangular pulse.
文章引用: 罗智超 , 郑旭武 , 罗爱平 , 徐文成 (2014) 谐波锁模类噪声方波脉冲掺铒光纤激光器的研究。 应用物理， 4， 107-112. doi: 10.12677/APP.2014.46015
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