Journal
LASER PHYSICS LETTERS
Volume 15, Issue 5, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1612-202X/aaa142
Keywords
fiber lasers; Q-switched pulses; soliton bunches
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Funding
- National Natural Science Foundation of China (NSFC) [61322510, 61640408, 61775107]
- Tianjin Natural Science Foundation, China [16JCZDJC31000]
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We experimentally report the coexistence of soliton bunches and Q-switched-like pulses in a partially mode-locked fiber laser with a microfiber-based graphene saturable absorber. The soliton bunches, like isolated spikes with extreme amplitude and ultrashort duration, randomly generate in the background of the Q-switched-like pulses. The soliton bunches have some pulse envelopes in which pulses operate at a fundamental repetition rate in the temporal domain. Further investigation shows that the composite pulses are highly correlated with the noise-like pulses. Our work can make a further contribution to enrich the understanding of the nonlinear dynamics in fiber lasers.
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