Characteristics of wave-breaking-free operation in a passively mode-locked all-fiber ring laser based on AS-Yb-PBGF |
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| Authors: | Chunmei Ouyang Lu Chai Youjian Song Minglie Hu Chingyue Wang |
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| Institution: | a Ultrafast Laser Laboratory, School of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
b Key Laboratory of Opto-electronics Information and Technical Science (Tianjin University), Ministry of Education, Tianjin 300072, China |
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| Abstract: | A passively mode-locked all-fiber ring laser is constructed based on all-solid Yb-doped photonic bandgap fibers (AS-Yb-PBGF), which provides the laser gain and anomalous dispersion simultaneously. Without any other dispersion compensators, the cavity is simple, compact, and maintenance- and alignment-free. The characteristics of wave-breaking-free operation in the laser are investigated by means of numerical simulations using the split-step Fourier method. The approximately parabolic pulses can be generated and evolved for maintaining the normal group-velocity dispersion intracavity, when the length of the single-mode fiber is between 2 and 4 m. The obtained highest energy of the output pulse is up to 2.27 nJ with the pulse duration of 8.61 ps, corresponding to the time-bandwidth product of 10.05. By dechirping out of cavity, the pulse duration is 0.70 ps. |
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| Keywords: | All-solid photonic bandgap fiber Photonic crystal fiber Wave-breaking-free Fiber laser |
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