期刊
PHOTONICS RESEARCH
卷 6, 期 6, 页码 535-541出版社
OPTICAL SOC AMER
DOI: 10.1364/PRJ.6.000535
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资金
- National Natural Science Foundation of China (NSFC) [11704260, 61405126, 61605122, 61775146]
- Shenzhen Science and Technology Project [JCY20150324141711695, JCYJ20160427105041864, JSGG20160429114438287, KQJSCX20160226194031, JCYJ20160422103744090]
- Beijing University of Posts and Telecommunications (BUPT) [IPOC2015B003]
- Natural Science Foundation of Guangdong Province [2016A030310049, 2016A030310059]
The pulse energy in the ultrafast soliton fiber laser oscillators is usually limited by the well-known wave-breaking phenomenon owing to the absence of a desirable real saturable absorber ( SA) with high power tolerance and large modulation depth. Here, we report a type of microfiber-based MoTe2 SA fabricated by the magnetron-sputtering deposition (MSD) method. High-energy wave-breaking free soliton pulses were generated with pulse duration/pulse energy/average output power of 229 fs/2.14 nJ/57 mW in the 1.5 mu m regime and 1.3 ps/13.8 nJ/212 mW in the 2 mu m regime, respectively. To our knowledge, the generated soliton pulses at 1.5 mu m had the shortest pulse duration and the highest output power among the reported erbium-doped fiber lasers mode locked by transition metal dichalcogenides. Moreover, this was the first demonstration of a MoTe2-based SA in fiber lasers in the 2 mu m regime, and the pulse energy/output power are the highest in the reported thulium-doped fiber lasers mode locked by two-dimensional materials. Our results suggest that a microfiber-based MoTe2 SA could be used as an excellent photonic device for ultrafast pulse generation, and the MSD technique opens a promising route to produce a high-performance SA with high power tolerance and large modulation depth, which are beneficial for high-energy wave-breaking free pulse generation. (c) 2018 Chinese Laser Press
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