Affiliation:
1. College of Physics, Hebei Key Laboratory of Photophysics Research and Application Hebei Normal University Shijiazhuang 050024 China
Abstract
AbstractMamyshev oscillators (MOs), which are based on an effective saturable absorber that arises from offset spectral filtering, are a new type of mode‐locked fiber lasers, but experimentally verifying the theory of the evolution of various dynamic characteristics of optical pulses in MOs has remained a major challenge due to the lack of appropriate filters and the means of real‐time, single‐shot experimental measurement. Here, the starting, extinction, and output dynamics of MOs are studied by designing and using a special temperature‐sensitive band‐pass filter, whose central wavelength can be continuously and accurately adjusted with temperature. The entire automated evolution of light pulses in the MO from start‐up to stable operation and then to extinction can be observed continuously by adjusting only the filter's temperature. What is more interesting is that the start‐up and the extinction processes are mirror symmetric, and both of them experience a double Q‐switching state. Further research has shown that the maximum filter interval corresponding to MO self‐starting is related to the pump power and that the bigger the pump power, the wider the filter interval. By gradually changing the interval between the two filters, the various output characteristics of the MO are also systematically studied.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Hebei Province
Hebei Province Graduate Innovation Funding Project
Subject
Condensed Matter Physics,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
2 articles.
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